Review Male-sterility systems in pigeonpea and their role in enhancing yield

Plant Breeding (Impact Factor: 1.6). 01/2010;


Male-sterility has been successfully used for enhancing yield in a number of cereal and vegetable crops. In food legumes, this technology could never be used either due to non-availability of natural out-crossing system, or an efficient male-sterility system or both. Pigeonpea [Cajanus cajan (L.) Millsp.] is a partially cross-pollinated food legume and recent success in breeding a stable male-sterility system has allowed breeders to exploit hybrid vigour for increasing yields. The cytoplasmic-nuclear male-sterility (CMS)-based hybrids have recorded 28.4% yield superiority over local checks in farmersÕ fields. This paper besides summarizing the reports of all the genetic and CMS systems, also discusses the prospects of utilizing these male-sterility systems in commercial hybrid breeding programmes.

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Available from: Shrikant Laxmikantrao Sawargaonkar
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    ABSTRACT: With 2 figures and 6 tables Male sterility is described for the first time in lupin crop species Lupinus angustifolius L. and Lupinus luteus L. and is also characterized in the Andean lupin, Lupinus mutabilis Sweet. In L. angustifolius and L. luteus, male-sterile plants were identified in artificially induced mutation populations, while in L. mutabilis, both naturally occurring and induced male-sterile plants were selected. For L. angustifolius artificially induced sterility, the segregation ratios in F1, F2 and backcrosses showed a single-gene recessive inheritance and was concluded to be of a nuclear rather than cytoplasmic form. In L. luteus, male-sterile plants were recovered from an M3 mutation population derived from cv. ‘Wodjil’, and several were consistent with that of single recessive gene, most likely nuclear. A naturally occurring sterility in L. mutabilis was concluded to be cytoplasmic with identification of restorer and maintainer genotypes. The trait in L. mutabilis has greatly increased the rate of F1 seed set with zero selfing. Male sterility could be useful for increasing crossing efficiency in breeding programmes, for exploiting heterosis and for interspecific hybridization.
    Full-text · Article · Jul 2011 · Plant Breeding