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Maternal inheritance of male sterility in the progeny of a natural hybrid between Cajanus lineatus and C. cajan
Author(s) -
Saxena Kul Bhushan,
Kumar Ravikotti Vijaya,
Rao Rama,
Saxena Rachit Kumar
Publication year - 2018
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12571
Subject(s) - cajanus , biology , hybrid , sterility , cytoplasmic male sterility , heterosis , microbiology and biotechnology , botany , agronomy , genetics
Adoption of pigeonpea hybrids in central and southern India is showing high impact with on‐farm yield advantages of >30%. The hybrid pigeonpea technology, the first in any legume crop, is based on a cytoplasmic‐nuclear male‐sterility ( CMS ) system. For a long‐term sustainability of hybrid programme, it is imperative that both nuclear diversity and cytoplasmic diversity are maintained among hybrid parents. In this context, a continuous search for new CMS ‐inducing cytoplasms is necessary. This paper reports detection of maternal inheritance of male sterility in the progeny derived from a natural hybrid between a wild relative [ Cajanus lineatus (W. & A.) Maesen comb. nov.] of pigeonpea and an unknown pigeonpea [ Cajanus cajan (L.) Millsp.] genotype. In the present study, the male sterility was maintained up to BC 7 F 1 generation by an advanced breeding pigeonpea line ICPL 99044. This male sterility inducing cytoplasm of C. lineatus was tagged as A 6 . In future, this CMS genetic stock can be used to develop a range of new pigeonpea hybrids with high yield and adaptation.