Feasibility of breeding male-sterile populations for use in developing interpopulation hybrids of pearl millet uri icon

abstract

  • Inter!population hybrids of pearl millet\ Pennisetum `laucum "L(# R(Br(\ have a substantial grain yield advantage over open!pollinated var!ieties that makes them an appropriate and economically viable prop!osition for many African agricultural situations\ provided that stablemale!sterile populations can be developed for use as seed parents( Theobjective of this research was to examine the feasibility of breedingstable male!sterile populations\ using the d1 dwarf version of NigerianComposite NCD1 and the A3 cytoplasmic?nuclear male sterility systemas a test case( Results showed that two cycles of recurrent selection forsterility maintenance ability led to the development of a fully e}ectivemaintainer version of NCD1( There was no signi_cant di}erencebetween the original C9 cycle bulk and the C2 cycle bulk "developedfrom the third and _nal cycle of recurrent selection# for grain yieldand other agronomic traits( The male!sterile population at the thirdbackcross stage\ developed from the maintainer version of NCD1\ hadas high a level of stable male sterility as the A0 system commercialinbred male!sterile line 730A0( Thus\ it is concluded that with the useof the A3 cytoplasmic male!sterile system\ it would be possible rapidlyto develop a maintainer version of any population without detrimentale}ects on grain yield and agronomic traits( Male sterility of populationsdeveloped from these maintainers will be highly stable\ paving the wayfor their e}ective utilization as seed parents in breeding inter!populationhybrids(

publication date

  • 2000