Indian Society of Genetics & Plant Breeding

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Allelic relationship between restorer genes for A1 and A4CMS systems in pearl millet

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Understanding the allelic complementation of restoration
among the stable restorer lines will contribute to robust
pearl millet restorer breeding program. Thus, present study
aimed to test allelic relationship between four diverse
restorer lines each for A1 and A4 cytoplasmic male sterility
(CMS) systems to find linkage between restorer genes
carried by different restorers of each CMS systems. Six
testcrosses were developed for each CMS system by
crossing each of A1 and A4 male sterile lines (81A1 and 81
A4) with all possible combination of F1s among four A1
restorers and A4 restorers, respectively. Almost all the plants
in these testcrosses showed complete male fertility
indicating presence of same fertility restoration gene (allelic)
is present in all the four restorer lines of A1 CMS system.
Similar results were found for A4 CMS system. This single
gene system within A1 and A4 provides the opportunity to
breeders to incorporate this allelic restorer gene into any of
the advanced lines for its rapid conversion into new restorer
lines besides to search for new restorer gene for future
diversification.
 

Keywords: Allelism, fertility restoration, male sterility, Pennisetum glaucum

Info

Year: 2018
Volume: 78
Issue: 1
Article DOI: 10.5958/0975-6906.2018.00010.X
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

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S. K. Gupta info_circle
D. Yadav info_circle
D. Atkari info_circle
K. N. Rai info_circle

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