光敏色素与种子萌发。V. 黄瓜种子萌发过程中光敏色素含量的变化。
Phytochrome and seed germination. V. Changes of phytochrome content during the germination of cucumber seeds.
机构信息
Department of Biological Sciences, Columbia University, New York, New York 10027.
出版信息
Plant Physiol. 1968 Apr;43(4):489-94. doi: 10.1104/pp.43.4.489.
Abstract
Cucumber seeds are light-sensitive, dark-germinating seeds. Inhibition of germination can be induced by prolonged exposure to continuous or intermittent FR. The dark germination process and the response to FR are phytochrome controlled. Phytochrome can be detected in these seeds by differential spectrophotometry in vivo. Spectrophotometrically measurable phytochrome increases during dark germination. The rate of increase is temperature dependent. Light treatments which are inhibitory for germination result in phytochrome contents lower than those of the seeds germinating in darkness. Treatments which restore germination also restore phytochrome formation.
摘要
黄瓜种子是对光敏感、暗萌发的种子。连续或间歇性 FR 的长时间暴露会抑制种子的萌发。暗萌发过程和对 FR 的响应受光敏色素控制。这些种子中的光敏色素可以通过体内差示分光光度法检测到。在暗萌发过程中，分光光度法可测量的光敏色素增加。增加的速度取决于温度。对萌发有抑制作用的光照处理会导致光敏色素含量低于黑暗中萌发的种子。恢复萌发的处理也会恢复光敏色素的形成。
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