THE GENETICS OF SELF-INCOMPATIBILITY IN OENOTHERA ORGANENSIS
نویسندگان
چکیده
منابع مشابه
The Genetics of Self-Incompatibility in Oenothera Organensis.
ENOTHERA organensis is endemic to the Organ Mountains of 0 southern New Mexico where the entire population apparently consists of considerably less than one thousand individuak2 The morphology of the seeds indicates a relationship to members of the subgenus Oenothera (sometimes called Onagra), but the growth habit and ovule placentation resemble types belonging to the subgenus Raimannia (the Eu...
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The self-incompatibility system of Oenothera organensis is used to analyze the frequency of S locus mutations induced by low doses (2.5-20 rad) of fast neutrons and x-rays. Th principles and methods of the screening system for detection of low dose effects have been presented. The results show that low doses induced significantly higher frequencies of seeds and seedlings than those produced spo...
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N THE gametophyte generation all genes are normally present in the I haploid state, and since the gene effects are not complicated by dominance, it is often possible to apply methods which cannot be used in the sporophyte, or diploid, geieration. In this connection, the method used in identifying crossovers between two genes effecting pollen tube growth in Oenothera organensis may be of interes...
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Self-incompatibility (SI) is defined as the inability to produce zygotes after self-pollination in a fertile hermaphrodite plant, which has stamens and pistils in the same flower. This structural organization of the hermaphrodite flower increases the risk of self-pollination, leading to low genetic diversity. To avoid this problem plants have established several pollination systems, among which...
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ژورنال
عنوان ژورنال: Genetics
سال: 1938
ISSN: 1943-2631
DOI: 10.1093/genetics/23.2.190