Changes in endogenous auxins during winter dormancy in tea (Camellia sinensis L.) O.!Kuntze
Changes in endogenous auxins during winter dormancy in tea (Camellia sinensis L.) O.!Kuntze
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DOI：
10.1007/s11738-006-0043-9
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发表时间：
2006-01-01
影响因子：
2.6
通讯作者：
Sood, S
中科院分区：
文献类型：
--
作者：
Nagar, PK;Sood, S
测定了茶树新梢在冬眠期（10月30日）和解除冬眠期（4月15日）内源生长素（IAA）的变化。在深休眠状态下的休眠枝中，游离IAA含量很低。1月30日以后，各处理的含量均有所增加，在休眠解除后达到最高值。结合态IAA含量随休眠的开始而增加，当游离态IAA含量最低时，结合态IAA含量达到最大值。随着游离IAA水平的增加，休眠解除前芽中结合态IAA水平下降，表明这些时期IAA发生了代谢互变。本文还讨论了游离和结合态IAA在茶树新梢休眠和解除休眠中的可能作用。
Changes in endogenous auxin (IAA) were determined in tea shoots with the onset of winter dormancy (30 October) and subsequent to dormancy release (15 April). Very low levels of free IAA were detected in dormant shoots when they were still in deep dormancy. The levels increased after 30 January and reached highest value after dormancy release. Conjugated IAA levels increased with onset of dormancy reaching its maximum value when free IAA levels were lowest. With increase in free IAA levels, the conjugated IAA levels decreased in shoots prior to dormancy release suggesting of metabolic inter-conversion of IAA during these periods. The possible roles of free and conjugated IAA in dormancy and following its release are discussed in relation to winter dormancy in tea shoots.