Genetics of a New Male-Sterility Locus in Pigeonpea (Cajanus cajan [L.] Millsp.) uri icon

abstract

  • A natural male-sterile mutant was found in the population of a short-duration pigeon pea (C. cajan) cv. ICPL 85010. This mutant is characterized by light yellow anthers of reduced size that are devoid of pollen grains. This mutant was crossed with two pigeon pea cultivars to study its inheritance. The F1, F2 and test cross data of the two crosses suggested that this male sterility trait is genetic in origin and is controlled by a single recessive gene. The F1 (mutant × ICPL 85010) plants were crossed with translucent (ms1) and arrowhead type (ms2) genetic male steriles reported earlier to study their allelic relationships. Segregation in the three-way cross F1 and F2 populations revealed that the mutant male-sterile gene was non-allelic to ms1 and ms2 loci and it is designated ms3. The new male sterility sources in pigeon pea will help in producing high-yielding hybrids and populations in diverse phenological groups

publication date

  • 2001
  • 2001