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- W2034191599 abstract "Meiotic behaviour in the microporocytes (pmc) and the subsequent behaviour of the meiotic products were investigated in plants collected from two population sites of the species distribution in Nigeria. All stages from leptonema to pollen development were encountered in the same anthers. Though the percentage of normal meiotic pairing as well as pollen stainability is high, the percentage of pollen germinability is very low; pollen tube growth in vitro is extremely slow and, in vivo, pollen tubes fail to elongate and penetrate the stylar tissue. Pollen protoplast dies and disintegrates rather quickly after anther dehiscence.Chromosome morphology and behaviour helped to explain the nature of the chromosome composition of this taxon, and a new basic chromosome number is suggested for the genus. Sexual sterility is explained to be caused by genetic instability and defficiency in the genotype constitution of the spores as a result of the hybrid origin of the taxon." @default.
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- W2034191599 date "1984-01-01" @default.
- W2034191599 modified "2023-10-17" @default.
- W2034191599 title "Microsporogenesis and sexual sterility in Drimiopsis barteri." @default.
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- W2034191599 doi "https://doi.org/10.1508/cytologia.49.87" @default.
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