GENETIC CHARACTERISTICS OF THE B CHROMOSOMES IN MAIZE
نویسندگان
چکیده
منابع مشابه
phylogeography and genetic diversity of the lesser mouse- eared bat (myotis blythii) in iran
in current study, 63 samples of bat populations collected from differ regions were used for evaluating the geographic variations. twenty cranial and dental characters for traditional morphometric and landmarks method on the ventral, dorsal skull and mandible for geometry morphometric studies were used. statistical analyses of traditional morphometric and geometry morphometric data indicated low...
Chromosome elimination in maize induced by supernumerary B chromosomes.
The regular chromosomal complement of maize consists of 20 chromosomes. These are known as the A set and are invariably present in this number in all normal diploid plants. Heteropycnotic regions known as "knobs" are found in characteristic positions on the different A chromosomes, although the number of knobs varies greatly in different strains. Knobless races are known, while others have as m...
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An understanding of the laws of heredity is essential if improvement of plant breeding is to be controlled intelligently. A comprehensive understanding of the mechanism of inheritance demands definite knowledge of the chromosome number, not only of the forms it is desirous to improve but also of the related species. The present paper presents the results of a study of the chromosome number in s...
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15 صفحه اولThe interaction of knobs and B chromosomes of maize in determining the level of recombination.
Enhancement of recombination by B chromosomes is influenced by the kind of heterochromatic knob present in or near the tested region of the A chromosomes. In homomorphic chromosome 9 bivalents of K(s)/K(s) constitution, double exchanges were increased at the expense of singles, but in the K*/K(s) heteromorphs there was a gain in both single and double exchanges at the expense of no-exchange tet...
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ژورنال
عنوان ژورنال: Genetics
سال: 1941
ISSN: 1943-2631
DOI: 10.1093/genetics/26.6.608