Indian Society of Genetics & Plant Breeding

Hybrid vigor in cytoplasmic geneic male sterility system-based hybrids for seed yield and its associated traits in pigeonpea [Cajanus cajan (L.) Millsp.]

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Six newly converted cytoplasmic male sterile lines were
crossed with 12 fertility restorer lines in line x tester mating
design. Synthesized hybrids were evaluated with check
Gujarat Tur Hybrid 1 at Sardarkrushinagar, Jagudan and
Khedbrahma to study the extent of heterosis. Analysis of
variance in individual and across the environments revealed
significant difference among genotypes and existence of
overall heterosis for seed yield/plant. High heterosis was
recorded for grain yield/plant, pods/plant and harvest index,
while, medium heterosis for plant height, number of
branches/plant, 100-seed weight, protein content, biological
yield and reproductive period. Days to flowering, days to
maturity, number of seeds/pod and pod length recorded
low magnitude of heterosis. Five hybrids, namely, CMS GT
087A x GTR 0525 (116.40%) CMS GT 087A x AGTR 0534
(108.93%), CMS GT 0307A x AGTR 0538 (99.21%), CMS GT
0301A x AGTR 0534 (95.51%) and CMS GT 0308A x AGTR
0536 (89.32%) showed standard heterosis for grain yield
and its component characters.
 

Keywords: Cytoplasmic male sterile lines, fertility restorers, hybrids, heterosis, pigeonpea, harvest index

Info

Year: 2014
Volume: 74
Issue: 2
Article DOI: 10.5958/0975-6906.2014.00165.5
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

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S. B. S. Tikka info_circle

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