<紀要論文>
Studies on the alloplasmatic effect in tribe Brassiceae : Ⅰ. On the carinata-cytoplasmic Brassica pekinensis induced by the successive backcrosses

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概要 1. The pekincllsis plants having carillaia's cytoplasm were obtained from the amphidiploid F_1 plant which had been produced by crossing B. carinata (♀) with B. pekinensis (♂) and which had been succe...ssively backcrossed with B. pekinensis. the pollen provider. for the nucleus-substitution. The carinata plants having carinata's cytoplasm were reproduced from the progeny of the original F₁ plant by successive backcrossing with B. carinata, the pollen provider, for the nucleus-restoration. Comparative examinations disclosed that the nucleus-restored plant was perfectly normal as the normal carinata plant, and also that the nucleus-substituted plant developed certain peculiar characters, which could not be detected in the normal pekinensis plant. 2. Various specific characters were always observable throughout generations from B_3F_4 through F_9B_12. The chlorophyll deficiency, the most conspicuous and recognizable character, served as a norm for use in detecting the carinata-cytoplasmic pekinensis plant and transmitted as a typical case of cytoplasmic inheritance. 3. The conspicuous characters appeared in the carinata-cytoplasmic pekiuellsis plant are likely to arise from the disharmony effected between carinata's cytoplasm and pekinensis' nucleus.続きを見る

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登録日 2012.07.20
更新日 2021.02.05

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