高温による普通系コムギの相同染色体対合の減少〔英文〕

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概要

• 論文の詳細を見る

• Effect of high temperature on meiotic homologous chromosome pairing of common wheat was examined. According to the experimental results, constant high temperature of 30°C significantly reduced homologous pairing compared with 15, 20 and 25°C, and such effect was recognized only when the PMCs of some limited stage immediately before premeiotic S phase were exposed to the temperature. Besides, the high temperature did not affect the pairing of both arms of an isochromosome (1A-long-arm) at all.It was strongly suggested from these results that (1) high temperature of 30°C disturbs the process of pairing at a step which controls premeiotic inter-homologues attraction, creating such a situation as homologues are spatially kept away each other, and (2) this step may closely be connected with a peculiar stage sensitive to the high temperature. A similarity of acting mechanism among high temperature, colchicine and Ph allele was also discussed.

著者

• 加藤 恒雄

  Laboratory of Plant Breeding, Faculty of Agriculture, Kyoto University

• 山県 弘忠

  Laboratory of Plant Breeding, Faculty of Agriculture, Kyoto University

• KATO TSUNEO

  Laboratory of Plant Breeding, Faculty of Agriculture, Kyoto University

• YAMAGATA HIROTADA

  Laboratory of Plant Breeding, Faculty of Agriculture, Kyoto University

関連論文

• 高温による普通系コムギの相同染色体対合の減少〔英文〕
• Effect of temperature on the regulation system of homoeologous chromosome pairing with 5B in wheat-rye F1 plants.
• Stage dependency of high-temperature effect on homoeologous chromosome pairing in wheat-rye F1 plants.

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