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首页> 外文期刊>Journal of Plant Physiology >ROLE OF ETHYLENE AND SHORT-CHAIN SATURATED FATTY ACIDS IN THE SMOKE-STIMULATED GERMINATION OF CYCLOPIA SEED
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ROLE OF ETHYLENE AND SHORT-CHAIN SATURATED FATTY ACIDS IN THE SMOKE-STIMULATED GERMINATION OF CYCLOPIA SEED

机译：乙烯和短链饱和脂肪酸在烟熏刺激的塞浦路斯种子中的作用

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The seeds of both Cyclopia intermedia and Cyclopia subternata exhibited a seed coat imposed dormancy. However, seeds of the former species also exhibited an embryo dormancy which could be broken by exposure to smoke or ethylene. This stimulating effect of smoke and ethylene was inhibited by exposure to NBD, indicating that ethylene in the smoke was responsible for the stimulation of germination. The involvement of ethylene in germination in both species was clearly demonstrated by the inhibition of germination after treatment with AOA. Differences in germination between the two species can not be ascribed to differences in ethylene production. Seeds of C. subternata, however, showed a much higher capacity to bind ethylene than seeds of C. intermedia. Pulse treatments with octanoic acid or smoke-saturated water stimulated germination in C. intermedia due to an increase in ethylene sensitivity, while longer treatments inhibited germination in both species. It appears that octanoic acid present in smoke-saturated water was responsible for the reaction of the seeds to the water.
机译：中间圆环和地下圆环的种子均表现出休眠的种皮。但是，前一物种的种子也表现出胚胎休眠，该休眠可能因暴露于烟雾或乙烯而破裂。暴露于NBD会抑制烟和乙烯的这种刺激作用，表明烟中的乙烯是刺激发芽的原因。在用AOA处理后抑制发芽清楚地证明了乙烯参与了两种物种的发芽。两个物种之间发芽的差异不能归因于乙烯产量的差异。但是，C.subternata的种子显示的结合乙烯的能力比C.intermedia。的种子要高得多。由于乙烯敏感性的提高，用辛酸或烟雾饱和水进行脉冲处理会刺激中间芽孢杆菌的萌发，而更长的处理时间会抑制两种物种的发芽。看来，烟雾饱和水中存在的辛酸是种子与水反应的原因。

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