Abstract
Exploitation of hybrid vigour is quite possible in cross-pollinated crops. However, pigeonpea is a grain legume crop with a moderate level of cross-pollination (20–70%), which is mainly aided by insect pollinators. As a first step, hybrids based on genetic male sterility (GMS) were developed in pigeonpea, but the hybrid seed production technique is not farmer-friendly, because in the hybrid seed production plot 50% of the population, which are male-fertile in the female rows, have to be eliminated in time before contamination. This requires skilled labour and is a time-consuming process, which increases the cost of hybrid seed production. Therefore, the objective of this study was to develop cytoplasmic-genetic male-sterile (CGMS) lines in pigeonpea through wide hybridization, which would be very suitable for hybrid seed production. Two CGMS lines, viz. CORG 990052 A and CORG 990047, were developed by interspecific hybridization ofCajanus cajan andC. scarabaeoides. Restorers were identified and three CGMS-based pigeonpea hybrids were developed. The hybrid COPH 3 is found to be promising in Tamil Nadu State, India.
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Kalaimagal, T., Muthaiah, A., Rajarathinam, S. et al. Development of new cytoplasmic-genetic male-sterile lines in pigeonpea from crosses betweenCajanus cajan (L. Millsp. andC. scarabaeoides (L.) Thouars. J Appl Genet 49, 221–227 (2008). https://doi.org/10.1007/BF03195617
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DOI: https://doi.org/10.1007/BF03195617