Anther and microspore development in different male sterile lines of oilseed rape brassica napus l

Theis, R.; Roebbelen, G.

Angewandte Botanik 64(5-6): 419-434


ISSN/ISBN: 0066-1759
Accession: 007023083

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Anther and microspore development of eight male sterile lines of oilseed rape (Brassica napus L.) were examined in order to determine the aberrations responsible for their male sterility. Premeiotic disturbance of development was shown to be responsible for CMS Juncea, CMS Napus and CMS Polima. Degeneration at tetrad stage was detected for ms Takagi, while the final breakdown of development in CMS Raphanus, Ms Janpol, ms NPZ and ms A occurred during the vacuolated microspore stage. Similar degenerations in other crop plants and possible common mechanisms are discussed.