Indian Society of Genetics & Plant Breeding
Comparative studies on stability parameters and
sustainability index for selecting stable genotypes in
upland cotton (Gossypium hirsutum L.) was carried out
accordinag to Eberhart and Russell model with
sustainability index model. Stability analysis was carried
out on 12 intra-hirsutum hybrids for seed cotton yield,
number of bolls/plant, boll weight, 2.5 % span length, and
bundle strength on three years data viz., 2001, 2002 and
2003. Based on the linear component (bi), non linear
response (S2di) and high mean performance (x), CSHH
198, CSHH 238, CSHH 825 and Om Shankar were found
stable for seed cotton yield. While based on sustainability
index and best performance, the hybrids CSHH 238, CSHH
243, CSHH 4311 and CSHH 825 were found to be stable.
Similarly, for number of bolls/plant deviation from
regression was non significant for CSHH 198, CSHH 243,
CSHH 825 and Ankur 651 whereas, on the basis of
sustainability index and mean performance Om Shankar,
CSHH 198, Ankur 651 and LHH 144 were found stable.
For boll weight, all the hybrids recorded very high
sustainability index, which indicated that this character
is least influenced by the environmental factors, whereas,
analysis of variance in the Eberhart and Russell model
indicated absence of G x E interaction and hence no
stability parameters can be estimated for boll weight. For
quality traits like 2.5 % span length and tenacity had very
high sustainability index in all the hybrids tested, indicating
that these characters are least affected by environmental
fluctuations. These results were found to be
Keywords: Upland cotton, sustainability index, yield, stability parameters
Year: 2006
Volume: 66
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
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