IDENTIFICATION OF HIGH YIELDING, CALCIUM AND ZINC RICH FINGER MILLET (Eleusine coracana L. Gaertn.) CORE GERMPLASM ACCESSIONS
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Date
2023-03-30
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University of Agricultural Sciences, Bangalore
Abstract
An investigation was carried out to unravel the genetic variability for yield, its component traits and grain nutrient content in 97 core germplasm accessions of finger millet along with three checks. They were evaluated during summer 2022 at College of Agriculture karekere Hassan, in Simple Lattice Design with two replications. Results revealed the significant difference for all the quantative traits which indicated the presence of adequate diversity. Narrow difference between phenotypic and genotypic coefficient of variation suggested the limited influence of environment. Estimates of heritability with GAM were high for plant height, flag leaf blade length, peduncle length, ear head length, finger length and grain yield plant-1 indicating the predominance of additive gene action. Using k-means clustering the genotypes were grouped into fourteen clusters, of which cluster IX is largest group with 13 accessions followed by cluster V and XIII with 11 accessions, respectively indicating diversity among them. The estimation of grain nutrient content for promising top twenty-two germplasm lines and three checks, revealed that GE71 has higher calcium and GE217 has high zinc content. These, promising germplasm accessions can be used in future breeding programmes for the improvement of existing cultivars. The principle component analysis of adjusted correlated and standardized two micronutrient contents of twenty-two germplasm and three checks resulted in two major principle components (PCs) which together explained 94.48% of variability