Browsing by Author "K. Rashmi"

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Estimation of genetic variability, heat susceptibility index and tolerance efficiency of wheat (Triticum aestivum L.) for timely and late sown environments
(Indian Society of Plant Breeders, 2020) Padma Thakur; Lal Chand Prasad; Ravindra Prasad; Kailash Chandra; K. Rashmi
The present investigation was conducted to determine the genetic variability, Heat Susceptibility Index (HSI) and Heat Tolerance Efficiency (HTE) in 17 wheat genotypes including the checks over timely and late sown condition of rabi 2016-17 and 2017-18. On the basis of HSI for yield per plant, K1006, CG1507, PBW343 and HUW234 while UP2847, RWP 2015-22 and CG 1507 were observed to be tolerant in in 2016-17 and 2017-18, respectively. HSI for 1000 grain weight was observed to be tolerant in genotypes K 1006, RWP 2015-22, CG 1505, Lok-1 and NW 1014 in 2016-17and in genotypes K 1006, HD 2967 and DBW 14 in 2017-18, respectively. For HTE, CG 1507 (92.8%) and NW 1014 (113%) were best in 2016-17 and 2017-18, respectively. The genetic parameters showed significant variability among the genotypes and high broad sense heritability was observed for plant height in 2016-17 and for yield per plant and plant height in 2017-18. © 2020, Indian Society of Plant Breeders.
Genetic variability of barley germplasm (Hordeum vulgare) for spot blotch disease resistance in natural and artificial epiphytotic condition
(Indian Society of Plant Breeders, 2019) Kailash Chandra; Ravindra Prasad; L.C. Prasad; Kuduka Madhukar; K. Rashmi; Padma Thakur
Spot blotch is having a severe impact on barley per se performance; therefore an experiment was conducted during rabi season 2016-17 at, Banaras Hindu University, Varanasi (also known as hot spot for spot blotch) in natural and artificial ephiphytotic condition, in order to find out genetic variability existing among released varieties of barley for disease resistance under consideration. The finding of this investigation showed that spot blotch resistant components and all the yield related traits showed a highly significant difference. Therefore efforts have been made to screen these varieties to find out the disease reaction based on the area under disease progress curve (AUDPC) and which will be available to research domain for further utilization in trait specific crop breeding. The study showed that without sacrificing the grain yield, variety HUB 113 was found to be resistant to this hot spot. It has the genetic capability to restrict the pathogen in order to maximize the yield level. © Indian Society of Plant Breeders.
Molecular techniques and mutation breeding approaches to genetically enrich the Barley (Hordeum Vulgare L.)
(Nova Science Publishers, Inc., 2021) Kailash Chandra; H.S. Saritha; K. Rashmi; S. Basavaraj Teli; Subhash Chand; Gayatri Kumawat; Champa Lal Khatik; Rohit Sharma
Barley, scientifically known as Hordeum vulgare L. is the world’s one of the preponderance ancient crop which brought under human cultivation. Its importance can be assessed by the fact that the Sumerians and the Babylonians used grains of barley as currency during the ancient era. It is unavoidable in brewing and malting. Apart from this, barley is also known for its numerous medical properties since it has beta-glucans which is having the capability to lower the risk of cardiovascular disease. To meet the demand of an ever-increasing population, barley production can be increased by adopting the high-yielding and climatic resilient varieties. Recently, a major emphasis in the breeding program has been given to the development of improved genotypes with the help of modern technologies to combat climate change, which has a great impact on yield reduction. Thus, to enhance and sustain barley production in the country, the development of genotypes against all cancerous factors is a prerequisite. Nonetheless, a plant breeder faces constraints in developing high-yielding varieties due to a lack of precise information about inheritance patterns and difficulties in selecting parents and further crosses. There is an urgent need to understand the perplexing information of various factors influencing barley yield potential. At the onset, vistas about barley genetic improvement were limited to conventional approaches. However, in the present era it extends to molecular approaches, and the future will be having a platform of advanced research for its improvement. Therefore, this chapter will provide information about the molecular approaches and mutation breeding in barley. © 2021 by Nova Science Publishers, Inc.
Stability analysis for yield and related traits over four environments in wheat (Triticum aestivum L.)
(Plant Archives, 2019) Padma Thakur; Lal Chand Prasad; Ravindra Prasad; Omprakash; Kailash Chandra; K. Rashmi
This Experiment was conducted with seventeen genotypes of wheat for ten quantitative traits in two date of sowing during Rabi-2016-17 viz., 18th Nov. (normal sown as E1) and 18th Dec. (Late sown as E2) and again in Rabi-2017-18 sown on 20th Nov. (normal sown as E3) and 20th Dec. (late sown as E4) at Agriculture research farm, Institute of Agricultural Sciences, Banaras Hindu university, Varanasi. The significant variations due to genotypes against pooled error revealed the presence of genetic variability for all the traits under study. The component G × E interaction being highly significant indicated that genotypes interacted considerably to environmental conditions in different environments. For yield per plant the genotypes, HUW 234 exhibited at par value with the population mean, bi near to unity and non-significant deviation from regression line(S2di), showing that genotype was stable under all environments. However, none of the genotypes were found to show stable performance as per days to 50% flowering, grain filling duration seeds/plants and 1000 grain weight. © 2019 Plant Archives. All rights reserved.