Rye B chromosome behaviour at first and second pollen mitosis and its relationship with anther maturity |
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Authors: | M J Puertas M Diez R Carmona |
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Institution: | (1) Departamento de Genética, Facultad de Biología, Universidad Complutense, Madrid, Spain |
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Abstract: | Summary Rye plants carrying B chromosomes with different nuclear and cytoplasmic constitutions have been analyzed at first pollen mitosis. No differences of B chromosome behaviour have been detected. It has been concluded that non-disjunction and preferential distribution are processes controlled by Bs themselves.At second pollen anaphase, B laggards have been observed. Both non-disjunction and B laggards occurred with higher frequency in younger anthers. |
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Keywords: | B chromosomes Pollen mitosis Secale |
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