Dormancy and impotency of cocklebur seeds I. CO_2, C_2H_4, O_2 and high temperature
スポンサーリンク
概要
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High O_2 tensions, CO_4, C_2H_4 and high temperatures were effective not only in breaking the dormancy of cocklebur (Xanthium pennsylvanicum Wallr.) seeds but also in increasing the germination potential of the nondormant but small seeds. There were few qualitative differences in response to these factors between the dormant and impotent seeds. Unlike CO_2, however, enriched O_ and C_2H_4 were stimulative even at the low temperature of 13℃. Germination induced by CO_2, C_2H_4 and high temperature treatments was lowered when endogenously evolved C_2H_4 or CO_2 was removed, whereas the effect of O_2 enrichment was not affected by their removal. CO_2 and high temperatures remarkably stimulated C_2H_4 production, whereas O_2 enrichment had no such effect. C_2H_4 productivity was lower in the dormant than non-dormant seeds, suggesting that the after-ripening is characterized by increasing C_2H_4 production.
- 日本植物生理学会の論文
著者
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Esashi Yohji
Department Of Biological Science Tohoku University
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Katoh Hajime
Department Of Biological Science Tohoku University
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