Studies on cytoplasmic-genetic male sterility in cultivated rice (Oryza sativa L.) . 1. Effect of different cytoplasm sources on male abnormalities at anthesis

Cheng, Y.K.; Huang, C.S.

Journal of the Agricultural Association of China 106: 1-22


Accession: 000989179

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Tabulated data are presented on the frequency of dehiscent and three types of indehiscent anthers, number of spikelets, pollen fertility and seed set in 16 cytoplasmically male-sterile entries grown under day/night temperatures of 25 deg C/20 deg C and 30 deg C/25 deg C. The entries comprised nine nucleus types and five cytoplasm types. The three indehiscent types of anther resulted from incomplete development at different stages of growth and increased in frequency at 25 deg C/20 deg C. Baike (Paiko) cytoplasm affected anther indehiscence only while rufipogon cytoplasm affected anther indehiscence and microspore development. Differences in mode of dehiscence and in the number of pollen grains attached to the stigma were noted between cytoplasmically male-sterile plants and parents.