Chromosome number and plant morphology in some ecotypes ofPoa pratensisL.
✍ Scribed by G. J. Speckmann; G. E. Dijk
- Publisher
- Springer
- Year
- 1972
- Tongue
- English
- Weight
- 538 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0014-2336
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✦ Synopsis
In a collection of Poa pratensis the variation in chromosome number and the relation between chromosome number and plant characters were studied . The material was collected at different places in the Netherlands . The number of chromosomes in the population varied from 33 to 92 . Plants with 56, 63, 70 and 77 chromosomes were in the majority. The occurrence of different chromosome numbers within almost all investigated plants led to the conclusion that aneusomaty is a rule in Poa pratensis . In the progeny of some plants chromosome numbers were found which were considerably higher than those in the mother plants . It was assumed that this rise in chromosome number was caused by fertilization of aposporous egg cells . No relation could be found between chromosome number and plant characters . A hemiploid plant (39 chromosomes) was marked off from its sibs (77 chromosomes) by a stunted growth and pale leaf colour .