Indian Society of Genetics & Plant Breeding


Mechanisms of cytoplasmic-nuclear male sterility in pigeongea wide cross Cajanus cajan x C. acutifolius

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Cytoplasmic-nuclear male sterile plants (CGMS) were
obtained as a result of crossing cultivated CaJanus caJan
with wild species C. acutifolius. There were two types of
CMS plants which were distinguished by anther
morphology. Both the types of CMS plants had complete
sterility of the anthers. Type I CMS had partially or totally
brown and shriveled anthers and the process of
microsporogenesis was inhibited at the pre-meiotic stage.
Type II CMS plants had pale while shriveled anthers and
the break down in microsporogenesis was at the
post-meiotic stage after the formation of tetrads caused
sterility of the plants.

Keywords: Pigeonpea, cytoplasmic-nuclear male sterility, microsporogenesis. meiosis


Year: 2004
Volume: 64
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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