Browsing by Author "Vishal Pandey"

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Stability Analysis in Rice (Oryza sativa L.) Genotypes with High Grain Zinc
(Agricultural Research Communication Centre, 2020) Vishal Pandey; S.K. Singh; Mounika Korada; D.K. Singh; A.R. Khaire; Sonali Habde; Prasanta Kumar Majhi
Background: Balanced nutrition is an essential part of human diet and rice being consumed by more than half of the world population, having rice cultivars biofortified for high zinc levels in polished rice would be very important to combat issues of malnutrition. Zinc being a highly variable trait and influenced by environmental and soil conditions, a multi-location stability analysis was conducted Ito identify cultivars stable for high grain zinc with consistency in yield performance. Methods: Present experiment was conducted to study the stability of 22 high zinc rice genotypes in five different locations of Eastern Uttar Pradesh in RCBD with three replications in all the locations and 12 different traits were included in the study. Eberhart and Russell model was used for evaluating the stability of the genotypes. Result: The results reported high significance for all the twelve characters studied. Mean sum of squares due to environment as well as linear component of environment were significant for all the characters suggesting presence of variation among the five environments tested. All the twenty-two genotypes showed significant differences for all the characters when tested against pooled error and pooled deviation. The genotype, IR15M1633 recorded highest mean grain zinc content but have negative association with yield. Therefore, considering for a high grain zinc genotype with consistent yield performance, the genotypes, DRR Dhan 48 and HURZ-3 showed good mean values for all the traits and was also stable for grain zinc, yield per hectare, 1000 grain weight, had shorter plant height and can be suggested for use as high yielding cultivars with high grain zinc and could be further used in breeding programmes successfully. © 2020, Indian Journal of Agricultural Research. All Rights Reserved
Study of genetic divergence in rice (Oryza sativa L.) genotypes with high grain zinc using Mahalanobis' D2 analysis
(Indian Society of Plant Breeders, 2020) S.K. Singh; Vishal Pandey; Korada Mounika; D.K. Singh; A.R. Khaire; Sonali Habde; Prasanta Kumar Majhi
The present investigation was conducted with twenty-two genotypes of rice during Kharif, 2018 in RBD with three replications in five different locations. The 22 rice genotypes were characterized based on 16 quantitative traits viz., days to first flowering, days to 50 per cent flowering, days to maturity, the total number of effective tillers per plant, plant height (cm), panicle length (cm), the number of spikelets per panicle, the number of grains per panicle, spikelet fertility percentage, grain weight per panicle (g), grain yield per plant (g), 1000-grain weight (g), grain yield per plot (kg), grain yield per hectare (kg), grain L/B Ratio, grain zinc content (ppm or mg /kg) using Mahalanobis D2 statistic. D2 analysis distributed the 22 genotypes into six clusters, of which cluster I was the largest with 15 genotypes. Cluster II had maximum intra-cluster values of 5.16 and the maximum inter-cluster distance was observed between the clusters III and V (40.51) followed by cluster IV and V (28.39) indicating the importance of the genotypes present in these clusters for exploiting heterosis for the desirable traits of these clusters. © 2020, Indian Society of Plant Breeders.