Indian Society of Genetics & Plant Breeding

An index for simultaneous selection of genotypes for high yield and stability under incomplete genotype x environment data

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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 (I1); w1=0.7,
w2 =0.3 (I2); w1=0.6, w2 =0.4 (I3). 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 groundnut data. It
was found that the performance of I1 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 I1, it is found that 2 – 3 are high yielders
and high stable performers for 0%–10% of incompleteness.
 

Keywords: Genotype x environment interaction, stability, Incomplete data, Simultaneous selection for yield and stability

Info

Year: 2010
Volume: 70
Issue: 1
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

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Shiv Kumar Choudhary info_circle

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