Stability analysis and molecular characterization of elite pearlmillet [Pennisetum glaucum (L.) R. Br.] hybrids
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Date
2007
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CCSHAU
Abstract
Two experiments were conducted to study the stability,
correlation and path coefficient for eleven traits in thirty hybrids of
pearlmillet at three locations and to molecularly charcterize these
hybrids with proteins and isoenzyme profiles. Significant genotypic
differences were observed for all the traits in all the three
environments. Estimates of environment index revealed that E1
(irrigated condition at Hisar) was the most favourable environment for
all of the characters. The G x E interaction was highly significant for
all the characters.
The estimates of stability parameters of individual genotype
revealed that hybrids HHB-146 and HHB-197 were most ideal hybrid.
Besides high grain yield, it exhibited stable performance across the
environments for harvest index, plant height ,total tillers and ear
length. Correlation study revealed that grain yield was significantly and
positively correlated with harvest index, ear girth, effective tillers, dry
fodder yield and biological yield in all the three environments. The path
coefficient analysis suggested the importance of biological yield as it
has direct positive effect and indirect effect on grain yield in all
environments. Hence, while breeding for increased grain yield main
emphasis should be given on biological yield.
In another experiment proteins and isoenzyme profiles
produced a lot of polymorphic bands. However, they also detected some
unique bands useful for fingerprinting of hybrids/male parents/female
parents so these can play important role in registration of plant
material and pedigree studies.
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Keywords
Pennisetum glaucum, Pearlmillet, Stability, Isoenzymes, Proteins, Fingerprinting