<i>Foeniculum vulgare</i>: Polyploidy, Translocation Heterozygosity and Pollen Variability
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چکیده
منابع مشابه
Biochemical heterozygosity and morphological variability: interpopulational versus intrapopulational analyses.
The literature is replete with articles suggesting the existence of a relationship between variability at biochemical loci and morphological variation in various animal populations, including humans. With few exceptions these previous studies have utilized an interpopulational approach by examining levels of heterozygosity between modal and extreme phenotypes, typically by use of analysis of va...
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BACKGROUND AND AIMS Oxalis debilis is a South American tristylous species that is currently naturalizing in China. Based on field observations and herbarium data a report is made on its pollination, morph frequencies, pollen viability, seed set and chromosome number. In addition, a new chromosome count for the species in Africa is provided. METHODS Field observations were conducted in six pro...
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Polyploidy is defined as an increase in genome DNA content. Throughout the plant and animal kingdoms specific cell types become polyploid as part of their differentiation programs. When this occurs in subsets of tissues within an organism it is termed somatic polyploidy, because it is distinct from the increase in ploidy that is inherited through the germline and present in every cell type of t...
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In a conventional breeding programme, all F1 plants, from homozygous self-fertilizing parents, are identically heterozygous. The F2 is produced, and the character combination selected for, is carried on further into daughter generations. In case the pollen was irradiated before pollination it would be investigated whether genetic changes had taken place which influence the variability in the pr...
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The average desoxypentosenucleic acid content of individual nuclei was determined for various normal and tumor tissues, and for livers showing precancerous changes, in the rat. With certain exceptions attributable to polyploidy, the values were practically indistinguishable from each other and from values reported for cell nuclei of other mammals. The amount of this nucleic acid in diploid cell...
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ژورنال
عنوان ژورنال: CYTOLOGIA
سال: 1966
ISSN: 0011-4545,1348-7019
DOI: 10.1508/cytologia.31.43