Open Access Minireview Article

The Role of the Global Regulator of Secondary Metabolism LaeA in Different Fungi

Pallabi Saha, Subhankar Roy-Barman

Current Journal of Applied Science and Technology, Page 1-5
DOI: 10.9734/CJAST/2018/45867

Secondary metabolites are natural bioactive products produced by bacteria, fungi and plants. It can be categorised as the deleterious mycotoxins, cytotoxic carcinogenic compounds or the beneficial antibiotics, fungicides, insecticides and antitumor metabolites. The increasing number of genome sequencing has shown that the fungal genome is a rich source of genes involved in secondary metabolism. Fungal secondary metabolism has, therefore, become an important topic of research around the globe. The genes involved in secondary metabolism are usually found in clusters in the genome. Secondary metabolites have been known to play important role in the development and pathogenesis of the fungus. To understand the role of secondary metabolites in pathogenesis it is important to study the mechanism of the global regulators of metabolism. Understanding the mechanism of action of the global regulators would help in increasing the production of beneficial metabolites and decreasing the production of deleterious metabolites. It would also provide an insight into the production of metabolites. One such global regulator of secondary metabolism is LaeA. The focus of this review is to provide an overview of the role played by LaeA across different fungi.

Open Access Original Research Article

In silico Comparative Analysis of Transcriptional Factor Binding Sites in Rice and Arabidopsis Calmodulin Binding Protein 60s Genes

Diksha Kumari, Bishun Deo Parasad, Ajoy Kumar Singh, I. S. Solanki

Current Journal of Applied Science and Technology, Page 1-9
DOI: 10.9734/CJAST/2018/45903

Plants are usually subjected to one or more biotic stresses either alone or together which reduces agricultural output significantly, leading to huge losses. To cope with the various stimuli generated by diverse environmental stresses, plants have evolved with a complex mechanism of signal perception and transduction. Several phytohormones and secondary messengers are the main players in mediating cellular responses to various stimuli. Of the various secondary messengers in eukaryotes, the role of calcium ion (Ca2+) has been most extensively studied. The Ca2+ is a well-known universal second messenger in plants regulating the responses of growth and development as well as different environmental stimuli in the plant. Changing cytosolic-free calcium concentration ([Ca2+]cyt) is one of the earliest responses to biotic stresses. These changes in cellular Ca2+ level are being mediated by different Ca2+ binding proteins like calmodulin (CaM). CaM interacts with calmodulin binding protein (CBP) and activates downstream defence response. Among the several CBPs, CBP60 family of proteins is found to be involved in several environmental stresses in Arabidopsis. However, no rice CBP60 (OsCBP60) has been identified in relation to pathogen infection. In this study, we have identified 15 OsCBP60 genes using bioinformatics studies. The transcription of a gene is mainly regulated by the presence of transcriptional binding sites (BSs) that are specifically bound by regulatory proteins called transcription factors (TFs). In silico analysis using promoter scanning software is being widely used for identification of TFBSs. We carried out an in silico search for identification of TFBSs in CBP60s using Plant Promoter Analysis Navigator (PlantPAN; http://PlantPAN2.itps.ncku.edu.tw). Several TFBSs including WRKY, MYB, bZIP, bHLH, EIN3, CG-1, GATA, NAC/NAM were identified in our analysis. These TFs are responsible for modulation of several biotic stress-responsive genes.

 

Open Access Original Research Article

Effect of Organic and Inorganic Fertilizers on Zinc Fractions and Their Contribution to Zinc Uptake under Rice-wheat System

A. K. Pandey, Vipin Kumar, J. Prasad, R. K. Prasad

Current Journal of Applied Science and Technology, Page 1-7
DOI: 10.9734/CJAST/2018/45852

The long-term effect of organic and inorganic fertiliser on Zn fractions in soil and their relation with Zn uptake in the rice-wheat system was studied in calciorthents of the Dr. Rajendra Prasad Central Agricultural University, Pusa Samastipur, Bihar. Application of NPK and compost and crop residue increased the water-soluble + exchangeable, carbonate and amorphous oxide, organically bound, complexed, crystalline oxide, residual and total Zn in the soil. The decreasing order of dominance of different fractions in soil was: total Zn > residual Zn >Zn bound to crystalline oxide > complexed Zn > Zn bound carbonate and amorphous oxide > organically bound Zn > water soluble plus exchangeable Zn. All the soil Zn fractions were significantly correlated among themselves indicating the existence of dynamic equilibrium with each other. Zinc uptake by rice-wheat was improved with NPK along with crop residue plus compost. Among the different Zn fractions, Zn bound to crystalline oxide followed by Zn bound to carbonate and amorphous oxide play a key role in explaining the variation in yield and nutrient uptake by rice and wheat.

 

Open Access Original Research Article

Assessment of Genetic Diversity in Hybrid Litchi (Litchi chinensis Sonn.) Revealed by RAPD Marker

Abha Kumari, Bishun Deo Prasad, Pankaj Kumar, Ruby Rani

Current Journal of Applied Science and Technology, Page 1-8
DOI: 10.9734/CJAST/2018/45854

The genetic diversity in 10 selected hybrids of litchi, Litchi chinensis Sonn. using 15 decamer random primers. Out of 15, 10 RAPD primers revealed polymorphism while the remaining 5 primers reflected no polymorphism. The primers produced a total of 52 bands of which 33 were polymorphic (61.11%). The number of polymorphic fragments for each primer varied from 1-7 with an average of 1.84 polymorphic fragments. The RAPD data were analysed to determine the genetic similarity coefficients which ranged from 0.57 to 0.83. Cluster analysis was performed using the Jaccard's similarity coefficient. This method dendrogram resolved the selected litchi hybrids into two major clusters. The results reveal the genetic relationship of hybrids of litchi developed at BAU, Sabour- Bhagalpur (Bihar).

 

Open Access Original Research Article

Assessing the Flowering and Fruiting Behaviour in Some Important Cultivars of Mango (Mangifera indica L.)

Ravindra Kumar, Amit Raj, Muneshwar Prasad, Khushboo Azam, Jyoti Kumari, Sanjay Sahay, Samik Sengupta, Chanda Kushwaha, K. P. Singh, Satish Chandra Narayan

Current Journal of Applied Science and Technology, Page 1-8
DOI: 10.9734/CJAST/2018/45855

Flowering and fruiting behaviour studied in five important cultivars of mango viz. Langra, Bombai, Zardalu, Bangalora and Hemsagar. The bud break, the appearance of 50% flower in panicle and fruit set was noticed in different time among the cultivars. The flowering intensity (%), the percentage of hermaphrodite flower (%), inflorescence shape and colour, inflorescence length and breadth (cm) significantly differed among the cultivars. The fruiting behaviour like fruit set (%), fruit drop (%), number of fruits per tree and fruit weight (g) was also significantly varied among the cultivars. The earlier bud break, the appearance of 50% flower in panicle and fruit set was observed in cv. Bombai and late in cv. Hemsagar during both the years 2015 and 2016. The statistically pooled result of the year 2015 and 2016 recorded the maximum flowering intensity percentage (62.05%) and inflorescence length (27.72cm) was observed in cv. Bangalora, whereas a higher percentage of hermaphrodite flowers (16.55%) and inflorescence breadth (21.00cm) was in cv. Zardalu. In respect to maximum fruit set per cent (2.82%) was found in cv. Hemsagar, maximum fruit drop per cent (97.70%) in cv. Langra, a higher number of fruits per tree (348.25 fruits/tree) in cv. Bombai and maximum fruit weight (490.11g) in cv. Bangalore.

 

Open Access Original Research Article

Sensory Evaluation and Overall Acceptance of Processed Products of Underutilised Fruits of Sikkim Himalayas

N. D. Sherpa, K. D. Bhutia, H. P. Sherpa, A. Pradhan

Current Journal of Applied Science and Technology, Page 1-4
DOI: 10.9734/CJAST/2018/45858

Underutilised fruit crops of sikkim has a great potential to be made into processed products but is not explored much. Sensory evaluation is one technique through which one can release a product out of these potential fruit crops. Diploknema butyraceae, Hippophae salicyfolia, Elaegnus latifolia, Docynia indica andMachilus edulis are the potential fruits taken for the study. The present study focuses on the acceptability of different products made from these fruits. Sensory evaluation was done using the hedonic scale which ranged from 1 - 9. For the parameters like flavor, color, aroma and appearance, the best result were obtained in ketchup of (Elaegnus latifolia) for flavor, jam (Hippophae salicifolia) and juice (Hippophae salicifolia) for color, ketchup (Elaegnus latifolia) and juice (Hippophae salicifolia) for aroma, and ketchup (Elaegnus latifolia) for appearance, jam (Hippophae salicifolia) and juice (hippophae salicifolia), ketchup (Elaegnus latifolia) and juice (Hippophae salicifolia), and ketchup (Elaegnus latifolia).

The overall acceptability was also assessed and the best product was obtained in juice (Hippophae salicifolia) with mean overall acceptability as 7.33 followed by juice (Hippophae salicifolia) having 7.00 as the mean overall acceptability. On the other hand, the products prepared from Machilus edulis had the lowest scoring among all. Thus, the results obtained from this study can be used for future works under the related topics.

Open Access Original Research Article

Phenotypic and Genotypic Factors Affect on Milk Yield per Day Calving Interval and Dry Period of Dairy Cattle in an Around of Madhepura District of Bihar

Pramod Prabhakar, Pramod Kumar, M. K. Bharti

Current Journal of Applied Science and Technology, Page 1-8
DOI: 10.9734/CJAST/2018/45859

A study was carried out to evaluate genetic and non-genetic factors affecting milk yield per day calving interval and dry period in cattle. A total of 229 Desi, 85 Holstein Friesian Crossbred (HFX) and 103Jersey Crossbred (JX) cows maintained in private dairy units. Calving interval, the month of calving, parity and quadratic effects of age at calving fitted as covariates significantly affected the milk, fat and protein yields. Milk, fat and protein yields obtained increased with an increase in calving interval. A dry period, typically 40 to 60 day, between lactations is believed to be required to maximise milk yield in the subsequent lactation. The factor for causing the variation in milk yield (MY) and calving interval (CI) is DP thus, influencing the efficiency of MY in the dairy cow. A reasonable length of DP is necessary because this period provides time to regain the energy lost during the previous lactation and to regenerate the secretory cells of animal for next lactation. The overall least-squares means (±standard error) of milk yield per day calving interval (Kg.) of Desi 2.525±0.032, HFX 5.725±0.054, JX 4.866±0.051 and dry period of 143.289±0.682, 115.084±1.155 and 117.868±1.093 days respectively. The effect of various non-genetic factors on milk yield per day calving interval and dry period studied among Desi, HFX and JX cows under farmer managemental condition. HFX had more than double and JX had nearly equal MY/day CI than Desi cows.

Open Access Original Research Article

Effect of Forchlorfenuron and N-acetyl Thiazolidine 4-carboxylic Acid on Chemical Parameter of Apricot (Prunus armeniaca L.) cv. New Castle

Debashish Hota, D. P. Sharma, Tanushree Sahoo

Current Journal of Applied Science and Technology, Page 1-6
DOI: 10.9734/CJAST/2018/45860

Bridging scientific and technological gaps needs utmost focus if India is to catch up with productivity and orchard longevity of apricot. Bio-regulators are being used by the growers to increase the yield by improving the yield attribute parameters. Keeping the objective to increase the yield, in the recent studies; twenty-six-year-old apricot cv. New Castle trees were subjected to 11 treatments viz. Forchlorfenuron (CPPU) at 5 and 10 ppm and N-acetyl thiazolidine 4-carboxylic acid (NATCA) at 50 and 100 ppm and their combinations were applied at pink bud and petal fall stage during the year 2015 and 2016. Out of the two time of spray the petal fall stage was found to be superior in both the years. Foliar spray of NATCA at 100 ppm at pink bud stage decreased titratable acidity and increased the total sugars, reducing sugars and non-reducing sugars content of fruit. Keeping all the observations in consideration NATCA 100 ppm at the pink bud stage was found to be the best among all the treatments.

Open Access Original Research Article

Assessing Genetic Diversity for Yield and quality Traits in Wheat (Triticum aestivum L.)

Priti Kumari, Nitish De, Anand Kumar, Tirthartha Chattopadhyay

Current Journal of Applied Science and Technology, Page 1-8
DOI: 10.9734/CJAST/2018/45862

An experiment was conducted in Rabi 2017-18 at wheat research farm, Bihar Agricultural University, Sabour, Bhagalpur (Bihar) to study the nature and magnitude of genetic divergence in thirty-two genotypes of wheat used using Mahalanobis’s D2 statistics as per ward minimum variance method. All the genotypes were grouped into six clusters revealed the presence of a considerable amount of genetic diversity for different yield and yield attributing traits. The cluster I consisted the maximum sixteen genotypes followed by seven genotypes in cluster IV and 3 genotypes each in cluster V and VI, 2 genotypes in cluster III and mono-genotype in cluster II. The highest intra-cluster distance was exhibited by cluster V (98.83) followed by cluster II (87.93), and III (87.86). The highest inter-cluster distance was observed between cluster III and VI (336.51) followed by cluster V and VI (293.99) and cluster II and III (269.15). The above results indicate that these genotypes have maximum genetic diversity and useful for developing a large number of transgressive segregants through crossing programme by using maximum diverse genotypes. Noteworthy is that cluster III exhibited the highest mean values for grain yield per plant, 1000- grain weight, grains per spike, biological yield and harvest index. The cluster VI exhibited the highest mean value for protein content and the lowest mean value for plant height, days to 50% flowering and maturity. The cluster II exhibited the highest mean value for spike length and grain weight while the cluster V exhibited highest mean value for Iron and zinc content. The promising genotypes for grain yield and its attributing traits were identified from cluster III and VI on the basis of mean values. Among the fourteen traits studied, maximum contribution was made by days to 50% flowering and iron content (20.36%) Therefore, these characters may be given importance during hybridisation programme.

Open Access Original Research Article

Genetic Variability and Heritability Studies in Chickpea (Cicer arietinum L.)

Mahamaya Banik, G. N. Deore, Ajit Kumar Mandal, L. B. Mhase

Current Journal of Applied Science and Technology, Page 1-6
DOI: 10.9734/CJAST/2018/45863

The source of genetically variable accessions is an important source for a potential future breeding programme. It provides an ample opportunity to breeders for releasing new and superior varieties, based on market utilisation. In this context, an experiment was conducted to study the variability and heritability of characters under 10 different parameters in 60 diverse genotypes of chickpea (Cicer arietinum L.) with Randomized Block Design (RBD) in two replications during Rabi Season 2014-15 at Pulses Improvement Project, Mahatma Phule Krishi Vidhyapeeth, Rahuri. The Genetic variability and heritability studies revealed that Number of pods per plant exhibited the highest range of variability followed by days to 50 per cent flowering, plant height, 100 seed weight, days to maturity. High heritability estimates associated with high genetic advance as per cent of the mean were observed for a number of pods per plant, days to 50 per cent, 100 seed weight and plant height characters. The analysis of variance (ANOVA) indicated the prevalence of sufficient genetic variation among the genotypes for all the ten traits. All characters showed high (>70%) estimates of heritability (b. s.). High genetic advance expressed as a percentage of the mean was exhibited by seed yield per plant and number of pods per plant.

Open Access Original Research Article

Integrated Use of Organic and Inorganic Fertilizer on Yield, Uptake and Quality of Sugarcane in Calcareous Soil

C. K. Jha, S. K. Thakur

Current Journal of Applied Science and Technology, Page 1-7
DOI: 10.9734/CJAST/2018/45864

The field experiment was conducted to study the integrated use of organic product viz., pressmud +  neem cake and seaweed extract along with inorganic fertilisers on yield, uptake and nutrient availability of sugarcane (BO 154) in alluvial soil rich in free calcium carbonate. The plot treated with pressmud + neem cake/seaweed extract either alone or in combination with inorganic fertiliser (100% NPK) significantly increased yield attributes and cane yield over control. The mean data indicated that highest number of tillers (101.44 x103 /ha), NMC (76.68 x103 /ha),  cane length (162.40 cm) and single cane wt. (863.3 g) were recorded in treatment receiving 100 % NPK along with pressmud + neem cake + seaweed extract in combination and lowest in control. The result indicated that integrated use of organic along with inorganic nutrient source was found superior regarding increasing cane yield up to the tune of 21.34% over control. However, juice quality parameters viz., brix, pol and purity coefficient remains unaffected. The mean sugar yield varied (6.71- 8.23 t/ha) significantly due to application of an inorganic and organic source of nutrients. The uptake of nutrients followed the similar trend as cane yield. However, the effect of various organic products viz., pressmud + neem cake and seaweed extract was found at par. The significant increase in organic carbon and available –N and available phosphorus were recorded in organic treated plots and being highest in treatment receiving pressmud + neem cake + seaweed extract in combination with inorganics over control. Thus, integrated use  of RDF (150–85–60 kg N–P2O5–K2O /ha)  along with soil application of pressmud + neem cake ( 9:1@ 1 t/ha) or seaweed extract  (@ 1 kg/ha) was found favourable for improving yield and soil fertility status of sugarcane. It would be better to apply inorganic fertiliser with organics to sustain the productivity of sugarcane in calcareous soil.

Open Access Original Research Article

Character Association among Morpho-physiological and Agrometeorological Indices for Photothermal Response of Rice

Preeti Kumari, Nilanjaya .

Current Journal of Applied Science and Technology, Page 1-9
DOI: 10.9734/CJAST/2018/45865

The experiment was conducted at the Dr. Rajendra Prasad central agricultural university, pusa, Bihar in a randomized block design with three replications during kharif season, 2017.The present study revealed the effects of photo thermal response on rice yield to adapt better in changing climatic scenario. Thirty two genotypes of rice were evaluated to work out heritability and trait association among important morpho-physiological traits and agro-meteorological indices for yield and yield contributing traits under directly seeded condition. The results indicated that PCV was higher than the GCV for almost all the traits. High heritability was observed for spikelet fertility (95%) followed by 1000 grain weight (91%), relative water content (88%), days to fifty per cent flowering (87%), days to physiological maturity (87%), growing degree days (86%), helio-thermal unit (86%),  photo-thermal unit (85%), grain yield per plant (80%) and heat use efficiency (76%) suggesting that these traits were primarily under genetic control. Correlation studies indicated a significant and positive association of grain yield with traits viz. plant height, panicle length, number of tillers per plant, number of panicles per plant and relative water content. Based on heritability and association analysis, plant height, panicle length, number of tillers per plant, number of panicles per plant, heat use efficiency and relative water content were found major contributing indices. Therefore, this should be considered as selection criteria for discrimination of outstanding rice genotypes under directly seeded condition.

Open Access Original Research Article

Study on Plant Population for Maximising Marketable Leaf and Minimising the Incidence of Phytophthora Foot Rot in Magahi Pan

Shivnath Das, Prabhat Kumar, Ajit Kumar Pandey, Sangeeta Kumari

Current Journal of Applied Science and Technology, Page 1-5
DOI: 10.9734/CJAST/2018/45866

The present experiment was conducted at Betelvine Research Centre, Islampur, Nalanda under AICRP on MAPs and Betel vine project during three consecutive years 2010-11 to 2012-13 with four plant density treatments (T1-1.25, T2-1.50, T3-1.75 and T4- 2.0 Lakh Vine ha-1). Experimental result showed that all the plant population treatments had a significant effect on growth and yield of Magahi Pan during all the three consecutive years of the experimentation. The plant population density of 1.50 Lakh Vine /ha exhibited higher no. of branches per vine (14.70 vine-1), maximum vine elongation (10.03 cm/month) and more fresh weight of leaves (219.79 g/100 leaves) though number of leaves per hectare was obtained with higher plant population of 1.75 and 2.0 Lakh vine /ha but fresh weight was reduced as a result of reduction in leaf size due to dense population. However, plant density of 1.5 Lakh Vine/ha resulted in the significant effect on marketable leaf yield (22.05 Lakh/ha) with a lower incidence of Phytophthora foot rot disease (8.62%) in comparison to higher plant density treatment and farmers practice.

Open Access Original Research Article

Screening of Maize Genotypes under Different Maturity Group against Maydis Leaf Blight Disease of Maize Caused by Helminthosporium maydis

Chandan Kumar, Phool Chand, N. S. Akhtar, C. S. Choudhary, Nishi Keshari

Current Journal of Applied Science and Technology, Page 1-7
DOI: 10.9734/CJAST/2018/45868

The present investigation on was undertaken for the management of Maydis leaf blight disease of maize. In the Screening trial, 84 maize genotypes of the maturity group (NIVT-Late) were tested against Maydis leaf blight under artificial inoculated condition, according to Disease Severity scale (1-9), No any entry was found resistant, 7 entries were found as moderately resistant to Maydis leaf blight, 34 entries rated as moderately susceptible and 44 entries found susceptible to Maydis leaf blight. Hundred maize genotypes of the maturity group (NIVT-Medium) were tested against Maydis leaf blight under field condition, No any entry was found resistant, 20 entries were found as moderately resistant to Maydis leaf blight, 31 entries rated as moderately susceptible and 50 entries found susceptible to Maydis leaf blight. Out of 40 maize genotypes of the maturity group (NIVT- Early + Extra Early) one entry was found resistant, 10 entries were moderately resistant to Maydis leaf blight, 22 entries rated as moderately susceptible and 8 entries found susceptible to Maydis leaf blight. Susceptible check CML-186 rated as a susceptible reaction to Maydis leaf blight.

Open Access Original Research Article

Path Analysis and Quality Character Studies in Some Mid Late and Late Cauliflower (Brassica oleracea var. botrytis L.) Genotypes

Subhrajyoti Chatterjee, Debmala Mukherjee, Partha Choudhuri, Hardyal Singh Kanwar

Current Journal of Applied Science and Technology, Page 1-7
DOI: 10.9734/CJAST/2018/45869

Aims: Path analysis study was done to show the cause and effect relationship between marketable curd yield and various yield components in cauliflower and to partition the total correlation coefficient into direct and indirect effect whereas quality character study was done to find out the suitable genotypes for cultivation on the basis of qualitative parameters along with quantitative traits.

Study Design: The experiment was laid out in Randomised Complete Block Design (RCBD) with three replications. 

Place and Duration of Study: The present investigation was conducted with twenty mid-late and late cauliflower genotypes at the Experimental Farm of the Department of Vegetable Science, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh during Rabi season of 2016.

Methodology: Path coefficient analysis was carried out using the formula of Dewey and Lu (1959). Qualitative characters were recorded as per the National Bureau of Plant Genetic Resources (NBPGR) plant descriptors.

Results: In this investigation, it was found that leaf number per plant had highest (0.995) positive direct effect on marketable curd yield per plant followed by curd size index (0.411), days to marketable curd maturity (0.376), plant height (0.371), leaf size index (0.363), curd depth (0.164) and curd solidity (0.140). On the other hand maximum, negative direct effect was shown by gross weight per plant (-0.133) followed by stalk length (-0.908). Maximum positive indirect effect was shown by the trait stalk length via leaf number per plant (0.981) and plant height via days to marketable curd maturity (0.415) on marketable yield per plant. Regarding quantitative traits, the genotypes were classified into three categories viz., snow white, white and dull for the trait ‘curd colour’ and the majority of these displayed either snow white or white colour curds. On the other hand, regarding ‘plant growth habit’, genotypes were classified into three categories i.e. erect, semi-erect and spreading type and the majority of these were categorised as either erect or semi-erect types.

Conclusion: Maximum positive direct effect towards marketable yield per plant was contributed by leaf number per plant followed by curd size index, days to marketable curd maturity, plant height, leaf size index, curd depth and curd solidity. So, for cauliflower varietal improvement programme, the above mentioned horticultural traits should be selected which will ultimately increase marketable curd yield. Regarding quality traits it can be concluded that erect and semi-erect type of plant growth habit is preferred in cauliflower as it is going to protect the curd from sunlight, thereby preventing the discolouration of the curd towards yellowing which may not be preferred in the market.

Open Access Original Research Article

Genetic Variation and Character Association Study in Local Cucumber (Cucumis sativus L.) Genotypes of Sikkim

Bina Tamang, Karma Diki Bhutia, Rajesh Kumar, Laxuman Sharma, B. S. Bamaniya

Current Journal of Applied Science and Technology, Page 1-9
DOI: 10.9734/CJAST/2018/45870

Cucumber is one of the most cultivated cucurbitaceous crop throughout the world known for its unique texture. Sikkim is one of the important states of India located in northeast Himalayas known for its richest diversity in the crop like cucumber with unique bigger sized fruit. Knowledge of genetic variability and inheritance patterns paved the way open for selection and further crop improvement. Total ten genotypes of cucumber were collected from different agro-climatic zones of Sikkim grown locally and evaluated under randomised block design (RBD) for measuring the magnitude of variability and genetic association of traits for cucumber improvement. The genotype SC-401 gave maximum mean value of 2.78 kg for fruit weight and SC-40 gave 28.36 kg for fruit yield per plant. All the genotypes performed differently in biochemical parameters. High phenotypic coefficient of variability (PCV), genotypic coefficient of variability (GCV) and heritability estimates coupled with high genetic gain was observed for the fruit weight, fruit length, fruit girth, and fruit yield per plant. Fruit weight and vine length are highly correlated with fruit yield per plant. It indicated the existence of a wide range of variation and offers wide scope for selection of the traits found in this study will be rewarding for further cucumber improvement.

Open Access Review Article

Transgenic Development in Horticulture Fruit Crops- A Review

Kumari Madhumala, Karanjeev Kumar, Sanjay Sahay

Current Journal of Applied Science and Technology, Page 1-5
DOI: 10.9734/CJAST/2018/45857

Fruits are known as “protective food" as they are rich in vitamins and minerals. However, abiotic and biotic stresses effect fruit production. Because of increased demand, many economically important fruit crops are needed to be improved. In past years, some efforts were made through conventional breeding. However, classical fruit breeding has had minor success in plant improvement and is restricted due to genetic erosion, long juvenile period, genetic drag and reproductive barriers limiting the transfer of favourable alleles from diverse genetic resources. There is an urgent need to accelerate crop improvement, which aimed to obtain unique plant traits. Several researches have been shown successful transgenic development in fruit crops. Agrobacterium-mediated transformation and regeneration of transgenic plants found successful in papaya. In Hawaii, Papaya ringspot virus provides practical control by virus coat protein transgenic papaya and expression of hepatitis B surface antigen in transgenic banana using agrobacterium-mediated transformation. In the recent advances in genetic engineering based on the introduction of transgenes and development of transgenic plant have been adopted successfully to improve crops yields and nutritional quality, but also for increase tolerance to various abiotic and biotic stresses. Agrobacterium-mediated transformation has a remarkable advantage over direct transformation method.