An index for simultaneous selection of genotypes for high yield and stability under incomplete genotype x environment data
2010
Rao, A.R. | Choudhary, Shiv Kumar | Wahi, S.D. | Prabhakaran, V.T.
A family of simultaneous selection indices is proposed here, which can be used for selecting genotypes simultaneously for high yield and stability under incomplete genotype x environment situations. Three indices are proposed by assigning different weights to yield (W1) and stability (W2) as w1=0.8, W2 =0.2 (11); w1=0.7, W2 =0.3 (12); w1=0.6, W2 =0.4 (13). These indices are tested for their performance based on Pearsonian correlations between yield based ranks and index based ranks, stability based ranks and index based ranks on ground nut data. It was found that the performance of 11 index is best for selecting high yielders as well as stable performers to the extent of 0%-10% of incompleteness in genotype x environment data. Among the top 4 out of 15 varieties selected based on 11, it is found that 2 - 3 are high yielders and high stable performers for 0%-1 0% of incompleteness.
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