Open Access Short Communication

How Ph.D. Students Start a Research

Muhammad Imran Rashid

Current Journal of Applied Science and Technology, Page 41-54
DOI: 10.9734/cjast/2021/v40i3031545

In education pedagogy, its necessary to prioritize tasks and jobs. Learn operating the reactor or required apparatus but most important first. Regarding measuring techniques (PSD measurement, pH measurement, XRD, SEM/EDS), learn more basic and fundamental techniques first followed by complimentary techniques. Regarding mineral carbonation, operation of reactor is a basic need followed by particle size measurement using Malvern Mastersizer and powders samples XRD analysis and identifying the phases and verifying those phases through TGA analysis. This article illustrates author personal research of 4 initial 4 months duration. Month wise progress is presented in this article in an interesting way.

Open Access Original Research Article

Studies on Management of Pod Borer Complex in Field Bean

N. Chamundeswari, N. C. Venkateswarlu, M. S. V. Chalam, G. Mohan Naidu

Current Journal of Applied Science and Technology, Page 1-14
DOI: 10.9734/cjast/2021/v40i3031541

A study was carried out at S. V. Agricultural College, Tirupati to evaluate the efficacy of selected insecticide molecules against pod borer complex in field bean during rabi, 2020-21. The results revealed that among nine insecticide molecules tested for their efficacy against major pod borers, the sprays of spinosad 45 SC @ 0.3 ml/L were found to be most effective against spotted pod borer (82.26 per cent reduction over control), tobacco caterpillar (79.77%), blue butterfly (81.13%) and pea pod borer (81.14%). The next in the order of efficacy were indoxacarb 14.5 SC @ 0.5 ml/L which has recorded 80.45 per cent reduction over control for spotted pod borer, 78.82% for tobacco caterpillar, 79.93% for blue butterfly and 79.79% for pea pod borer whereas flubendiamide 20 WG @ 0.3 g/L has recorded 81.02 per cent reduction over control for spotted pod borer, 77.13% for tobacco caterpillar, 77.41% for blue butterfly and 77.11% for pea pod borer. Similarly, the least per cent pod damage was observed in spinosad @ 0.3 ml/L (37.10%), indoxacarb @ 0.5 ml/L (37.45%) and flubendiamide @ 0.3 g/L (37.98%) which were statistically on par with each other. The results on the effect of pod borer complex management on yield revealed that, among the treatments the pod yield was maximum in spinosad 45 SC @ 0.3 ml/L (1347 kg ha-1) followed by indoxacarb 14.5 SC @ 0.5 ml/L (1278 kg ha-1) and both the treatments were at par with each other.

Open Access Original Research Article

Encapsulation of Nodal Segments for Propagation and Short-term Storage of Giloe (Tinospora cordifolia Willd.): A Medicinally Important Plant Species

Sonali Singh, M. K. Tripathi, Sushma Tiwari, Niraj Tripathi, G. Tejovathi, Ashok Ahuja

Current Journal of Applied Science and Technology, Page 15-24
DOI: 10.9734/cjast/2021/v40i3031542

Aims and Objectives: Standardization of the concentration of encapsulation matrix and hardening solution owing to the proportion of germination to crop idyllic artificial seeds of Tinospora cordifolia followed by plantlet regeneration.

Study Design: Completely Randomized Design (CRD) was adopted to find out significant differences among different treatment combinations.

Place and Duration of the Study: The present study was conducted at Plant Tissue Culture & Genetic Transformation Laboratory, Department of Plant Molecular Biology & Biotechnology, College of Agriculture, Gwalior, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, M.P., India during 2017 to 2020.

Methodology: A protocol was established for encapsulation of nodal segments of Tinospora cordifolia excised from 18-month-old in vitro raised plants for short- term conservation and further propagation. Diverse concentrations and combinations of gelling matrix viz., sodium alginate and complexing agent i.e., Calcium chloride were experienced to optimize combination to get uniform beads.

Results: The best gel composition was accomplished employing 2.5% sodium alginate and 100 mM calcium chloride. The maximum conversion response of encapsulated beads was achieved on Murashiage and Skoog’s medium supplemented with 2.0 mgl-1 BAP in combination with 0.2mgl-1 NAA. Well, developed regenerated plantlets were successfully hardened, acclimatized and established first under net house conditions followed in the field.

Conclusions: In this study, synthetic seed production technique in giloe (Tinospora cordifolia) has been established. Present method ensures viable strategy for multiplication, conservation and germplasm exchange through synthetic seed development.

Open Access Original Research Article

Heterosis and Combining Abilities Studies in Okra [Abelmoschus esculentus (L.) Moench]

S. Nanthakumar, C. Kuralarasu, A. Gopikrishnan

Current Journal of Applied Science and Technology, Page 25-33
DOI: 10.9734/cjast/2021/v40i3031543

Aim: Genetically complementary parents and amount of heritability of economic traits determines the successful development of breeding population, hybrids and varieties. The studies on heterosis and combining ability are useful in formulating effective breeding strategies and selection of suitable parents for crosses in breeding program.

Study Design: During the study period24 F1hybrids and their 10 parents were evaluated along with commercial check (‘Shakthi’) in a randomized block design (RBD) with three replication.

Place and Duration of the Study: The present study was conducted at Adhiparasakthi Agricultural College farm, Kalavai, Vellore district of Tamil Nadu state during summer 2014.

Methodology: The experimental material consist of 24 F1 hybrids developed from six lines (EC755648, EC755653, EC 755654, IC52303, IC755652 IC111515 ) and three tester (Arakka Anamika, Parbhani, Pusa Sawani VRO 22 ). These were evaluated along with commercial check (‘Shakthi’) in a randomized block design with three replication. The observation were recorded for 14 yield and yield contributing characters.

Results: The results inferred that the predominance of non-additive gene action was observed for all the traits. Among the parents, the overall study of gca effects suggested that parent EC 755648 and Parbhanikranti were significant general combiner for yield, these can be used to improve hybrids with desirable traits in future. Significant positive SCA effects were found for all the studied traits.

Conclusion: Among the hybrids, EC755653 x ArakkaAnamikaand IC111515 x ParbhaniKrantishowed desirable standard heterosis percentage over the check Shakthi along with good sca effects and per se performance for yield and other important yield contributing traits, thus it can be effectively be exploited in hybrid breeding programme.

Open Access Original Research Article

The Magnetism from the Movement of Electron in Hydrogen Atom

Wei-Xing Xu

Current Journal of Applied Science and Technology, Page 34-40
DOI: 10.9734/cjast/2021/v40i3031544

In this work we calculated the magnetism from the movement of electron in hydrogen atom and found that the contributions from the electron in the same main quantum levels to the magnetism of the hydrogen atom are the same; but the contributions from the electron in different main quantum levels to the magnetism of the hydrogen atom are the eigenvalue dependent instead. These facts tell us that the concepts about “intrinsic property” and “relativity effect” of electron spin should be discarded, and accordingly, the quantum mechanics should be rebuilt.