Open AccessSELECTION INDEX AS WEIGHTED AVERAGE OF ABSOLUTE SCORES OF AMMI MODEL & YIELD OF WHEAT GENOTYPES EVALUATED IN NORTH WESTERN PLAINS ZONE OF THE COUNTRY
Author(s) -
Ajay Verma,
Gurmeet Singh
Publication year - 2020
Publication title -
journal of experimental biology and agricultural sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.108
H-Index - 2
ISSN - 2320-8694
DOI - 10.18006/2020.8(6).828.838
Subject(s) - ammi , yield (engineering) , mathematics , correlation , forensic science , index (typography) , genotype , veterinary medicine , biology , gene–environment interaction , medicine , genetics , materials science , geometry , world wide web , gene , computer science , metallurgy
Highly significant effects of the environment (E), GxE interaction and genotypes (G) observed by AMMI analysis during 2018-19 and 2019-20 study years. First year of the study observed suitability of WH1124&HD3059 wheat genotypes by WAASB measure. Superiority index while weighting 0.65 and 0.35 for yield & stability found WH1124 &PBW771 as of stable performance with high yield. Moreover the average yield of genotypes ranked PBW771 & WH 1124 as of the order of choice. PRVG and MHPRVG measures observed the suitability of PBW 771 & PBW752 wheat genotypes. The first two PCAs explained 82.3% of the variation of the original variables. SI clubbed with EV & SPIC. Values of SI for wheat genotypes expressed high direct relation with yield, MHPRVG&PRVG measures only, and negative correlation with remaining measures. WAASB measure exhibited direct relationships with most of the AMMI based stability measures and negative values of correlation with SI, PRVG, MHPRVG and yield. Second year of study wheat genotypes DBW291, WH1264 & HD3334 were selected by WAASB measure. Superiority index found PBW812, HD3334& WH1264 as of stable performance along with high yield. MHPRVG measures observed suitability of PBW812, PBW771 & DBW173 while PRVG favoured PBW812, PBW771& JKW261 while consensus observed regarding WH1021 & WH1124 as unstable wheat genotypes. Moreover the average yield of genotypes ranked PBW812, JKW261 & PBW771 as of the order of choice. Values of SI measure had expressed positive correlation of high magnitude with yield, PRVG and MHPRVG whereas indirect relations of high degree with AMMI based stability measures. Values of WAASB measure had positive relations with AMMI based stability measures along with negative values of correlation with SI, yield, PRVG, and MHPRVG.