Investigations of 2 kinds of cytoplasmic male sterility in rapeseed brassica napus

Bartkowiak Broda, I.; Rousselle, P.; Renard, M.

Genetica Polonica 20(4): 487-498


Accession: 005749078

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In cytoplasmic male sterile plants obtained from crosses between the Polish spring cultivar 'Bronowski' as a male parent and other spring varieties as female, correlations were found between morphological characters of flowers and male sterility. Indehiscent anthers and later development of pollen apparently caused sterility, although there was pollen production. Cytoplasmic male sterility issued from cytoplasmic male-sterile radish (Raphanus sativus L.) was strong: the anthers were atrophied and never had pollen grains. Degeneration of tapetum and microspore occurred after the tetrad stage. Meiosis was irregular.