Development of a cytoplasmic nuclear male-sterility system in pigeonpea using C. Scarabaeoides (L.) Thouars.
2003
Saxena, K.B. | Kumar, R.V. (International Crops Research Institute for the Semi-Arid Tropics, Patancheru (India))
The phenomenon ofheterosis has been successfully exploited for the genetic enhancement of yield in a number of ceral and horticultural crops. In pigeonpea (cajanus cajan (L.) Millsp.) also, significant yield gains have been demonstrated through genetic male-sterility based hybrid technology. These hybrids, however, could not create the expected impact due to difficulties encountered in their large-scale seed production. Toovercome this bottleneck, a cytoplasmic-nuclear male-sterility system was developed from a cross between cajanus acarabaeoides (L.) thouars, a wild relative of pigeonpea, and a short-duration pigeonpea cultivar. This paper besides summarizing the results of F1 and backcross generations, reports the maintenance and fertility restoration systems of this newly developed cytoplasmic nuclear male-sterility source. The development of this technology is expected to help the seed industry in large-scale seed production of pigeonpea hybrids and their parents.
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