Morphological and molecular profiling of interspecific derivatives of Cicer arietinum L. x C. pinnatifidum
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Date
2020
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Punjab Agricultural University, Ludhiana
Abstract
In the present investigation, a set of 158 interspecific derivatives, derived from Bushy Mutant
x ILWC 0 (C. pinnatifidum) cross were evaluated along with their parents during 2018-19 and
2019-20. Analysis of variance revealed significant differences among the derivatives for all
the traits studied. Various superior derivatives were identified for different traits. GLWP 142
was found to be promising for seed yield per plant. High to moderate heritability and genetic
advance was observed for plant height, number of pods per plant, biological yield per plant
and 100-seed weight. These traits also exhibited significant positive correlations with the seed
yield per plant implying their importance in selection for high seed yield per plant. Path
analysis revealed significant positive direct effects of number of pods per plant, 100-seed
weight, number of seeds per pod and biological yield per plant towards seed yield while the
indirect effects for various traits were prominent via biological yield. D2 analysis grouped 158
derivatives and their parents into 13 clusters. Only one derivative (GLWP 55) was found
resistant and 45 derivatives were found moderately resistant to Ascochyta Blight. None of the
resistant derivative was found for Botrytis Grey Mould while 24 derivatives gave moderately
resistant reaction. The genotyping-by-sequencing (GBS) analysis identified 1409
polymorphic SNP markers. Graphical genotyping confirmed the introgressions of varying
degree in derivatives from wild parent ILWC 0 (C. pinnatifidum). Single marker analysis
identified seven SNP markers linked to Botrytis Grey Mould which could be further utilised
for its mapping. The promising derivatives identified for yield and its component traits along
with the disease resistance can be utilized in further chickpea breeding programmes for
development of high yielding cultivars.
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Salaria, Sonia (2020). Morphological and molecular profiling of interspecific derivatives of Cicer arietinum L. x C. pinnatifidum (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.