Detection of Genetic Variation among Seed and Seedlings of Chamaecyparis obtusa Using Allozyme Markers
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概要
- 論文の詳細を見る
The effects of nursery practices on genetic composition and structure were studied in Chamaecyporis obtusa by analyzing seeds and one-, two-, and three-year-old seedlings. Enzyme polymorphisms of the 6Pgd-2, G6pd, Got, Gk, Shd-2, Pod, Dia-1, and Pgm loci were used. Only Dia-1 indicated significantly different allelic frequencies between seeds and three-year-old seedlings. Most of the genetic diversity of the parental clones in this seed orchard could be transferred to the offsprings. Genetic diversity on the basis of an average expected heterozygosity did not differ between seeds and seedlings. A slight excess of homozygotes in seeds and a significant excess of heterozygotes in seedlings of different ages to the expected panmictic proportions were found. Most of the differences in genotypic distributions among the seed and seedling stages. probably resulted from viability selection favoring outcrosses, and selective removal of inbred offsprings including self-fertilized ones prior to their transplantation in the nursery.
- 一般社団法人日本森林学会の論文
- 1998-02-16
著者
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Ide Yuji
Graduate School Of Agricultural And Life Sciences The University Of Tokyo
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Tang Ding-qin
Graduate School Of Agriculture And Life Sciences The University Of Tokyo
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Ide Yuji
Graduate School Of Agriculture And Life Sciences The University Of Tokyo
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