Pigeonpea is an important legume crop of rainfed agriculture
system. Despite of concerted research efforts in pigeonpea
improvement, stagnated productivity of pigeonpea during last
several decades may be accounted to prevalence of various yield
constraints and the situation is exacerbated by inadequate
availability of genomic resources to undertake any molecular
breeding programme. The yield levels remained unchanged despite of
high yielding pure varieties released. In this scenario, like many
cereal crops the use of hybrid technology in enhancing productivity
has a potential. A stable male-sterility system in conjunction with
existing natural out-crossing made it possible in pigeonpea.
Knowledge of the genetics of male-sterility and fertility
restoration behavior of the hybrid systems would have considerable
impact on breeding hybrid parents with greater efficiency and it
would also permit their rapid back-cross transfer of fertility
restoration genes in elite inbred lines. The present study is
designed to investigate the genetics of A4 Cytoplasmic-Nuclear
Male-Sterility (CMS) system and linking molecular markers with
fertility restoration (Fr) in pigeonpea.
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