Indian Society of Genetics & Plant Breeding

Heterosis in relation to genetic divergence in minicore collections of Chickpea (Cicer arietinum L.)

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Genetic analysis in chickpea using twelve lines belonging
to high, medium and low diversity groups from different
inter and intra cluster and four testers having high per se
productivity was carried out to study heterosis in relation
to genetic diversity for yield and yield attributes.
Significant variation for all the characters was noticed
except number of primary branches per plant among
parents. Parents versus hybrid interaction effect was
highly significant for all the characters. The hybrids ICC
6279 x ICC 13124, ICC 15697 x ICC 13124, ICC 6877 x ICC
7315 and ICC 6877 x ICC 10755 exhibited negative
significant mid parent heterosis for earliness. Twenty
seven hybrids showed positive significant mid parent
heterosis for number of pods per plant and the magnitude
of heterosis values was high with the highest value of
119.61 per cent. Nearly 85-90 per cent hybrids showed
significant positive mid parent heterosis for seed weight.
The degree of heterosis for seed yield varied considerably
Out of 48 hybrids, 19 exhibited significant positive mid
parent heterosis, whereas three exhibited significant
positive heterosis over mid parent. The top three potential
hybrids over mid parent were ICC 6877 x ICC 2072, ICC
2507 x ICC 2072 and ICC 6877 x ICC 7315. Study of
relationship between divergence of the parents and
heterosis in the hybrids revealed that the parents
separated by D2 values of high to medium magnitude
generally showed higher heterosis for different characters.
This indicate the role of both heterosis and genetic
diversity of parents in realizing higher yield in chickpea

Keywords: Cicer arietinum, minicore, hybrids, heterosis, genetic divergence


Year: 2012
Volume: 72
Issue: 3
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906


H. D. Upadhyaya info_circle
S. T. Kajjidoni and S. S. Patil info_circle

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