Dissection of genetic variation and evaluation of yield and key agriculturally important traits in Barnyard millet (Echinochloa frumentaceae (Roxb.) Link) under typical sodicity stress
DOI:
https://doi.org/10.14719/pst.4957Keywords:
barnyard millet, genetic parameters, heritability, PCA, sodicity, soil stressAbstract
Barnyard millet, a climate-resilient small millet, is a valuable feed source for both livestock and humans. Sodicity is an increasingly important soil stress under changing climatic conditions. The present investigation comprised 74 germplasm and 3 check varieties MDU1, CO(KV)2 and ATL1 evaluated under sodic soil using Augmented Complete Block Design. The analysis of variance revealed the presence of significant differences among the genotypes for all 17 traits. Genetic variability estimates, such as PCV, GCV, heritability and genetic advance, were high for all the traits except days to maturity. This suggests that these traits are governed by additive gene action, which favours the effective selection of these traits. Association analysis revealed that flag leaf length, days to maturity and single-ear head weight showed significant and positive associations with single plant yield. Therefore, the selection of these traits can improve the yield of barnyard millet under sodic soil. The principal component analysis (PCA) revealed that five significant principal components explained 70.19% of the total variation, with the first 2 principal components attributed to 48.99% of variation which are majorly attributed to days to 50% flowering, days to maturity, flag leaf length, plant height, single-ear head weight, number of racemes per panicle and number of tillers. Hierarchical cluster analysis grouped the genotypes into 5 clusters with the accessions in cluster I exhibiting high tillering ability and yield potential. Therefore, the accessions in cluster I can be utilized as parents in the hybridization programme for enhancing the yield of barnyard millet.
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Copyright (c) 2024 S Muruganantham, Kannabiran Sakthivel, Chockalingam Vanniarajan, Paramasiwam Jeyaprakash, Thanakkan Ramesh, Sadayandi Geethanjali, Satheeshkumar Periasamy, Selvaraj Rathika, Anandan Annamalai
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