Assessment of genetic diversity and G × E interaction in elite genotypes of wheat (Triticum aestivum L.) for zinc and iron content
Loading...
Files
Date
2019-08
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present investigation were carried out at three locations representing three diverse environments, namely, (i) at N. E. Borlaug Crop Research Centre (NEBCRC), G.B. Pant University of Agriculture and Technology, Pantnagar (2017-18 and 2018-19) and (ii) at G.B. Pant University of Agriculture and Technology Regional Stations, Majhera, Nainital (2018- 2019). The experiment under each environment was laid out in Randamized Block Design with three replications. Genotypes were evaluated for different genetic parameters including variability, stability and diversity. Analysis of variance revealed highly significant differences among the accessions for all the parameters in all environments. The genotypes exhibited high variability for all the nine characters which represent genotypic variability among the genotype for all the characters under study. Under plains condition top three genotypes for grain iron content were PBW 658, HS 526 and DBW 88 and for grain zinc content 22 HRWYT 241, 9 STEMRRSN 41 and AKAW 4739 were most desirable genotypes. Similarly in hilly region the top three genotype for grain iron content were 22 HRWYT 241, 9 STEMRRSN 41 and DBW 88 and for grain zinc content all genotypes show higher mean performance except 22 HRWYT 2413, WL 711 and PBW 644.The pooled analysis of variance of AMMI model for nine different character in three different environments showed that mean sum of squares due to genotypes, environment and G X E interaction were highly significant for all character. Based on ASV, the most stable genotype for grain yield per plot was QLD-46 and BWL-660 ranked the least stable. All the forty nine genotypes were grouped into four clusters and out of four clusters, cluster II contained maximum number of twenty one genotype, followed by cluster IV and I with thirteen and twelve genotypes and cluster III contained minimum number of three genotypes.
Description
Keywords
null