The effect of water stress on ethylene production and ethylene sensivity of Freesia inflorescences.
The effect of water stress on ethylene production and ethylene sensivity of Freesia inflorescences.
复制标题
水分胁迫对小苍兰花序乙烯产生及乙烯敏感性的影响。
DOI：
10.17660/actahortic.1986.181.15
复制
发表时间：
1986
期刊：
影响因子：
--
通讯作者：
G. Spikman
中科院分区：
文献类型：
--
作者：
G. Spikman
小苍兰是荷兰重要的切花。但是，它的保存质量是中等的。从分离的花序在水中举行高达40%的芽不长出给花。芽和花的畸形也会发生。乙烯在小苍兰花序发育中的作用尚不清楚。测得的最大产量约为8 nl.花序-1.h-1。没有证据表明，个别小花的衰老之前或伴随着较高的乙烯生产。水分胁迫花序的乙烯释放量高于非胁迫花序。乙烯高峰出现在胁迫后第3天，非胁迫花序在胁迫后第4天。在乙烯高峰之后，产量迅速下降到低水平。在此之前，当比较应激花和非应激花时，没有观察到花序单个花的衰老速度有任何差异。然而，水分胁迫下花序中芽的畸形和死亡较多。小苍兰的花序对乙烯非常敏感。暴露于乙烯浓度（范围从0.05到1.0 μ1.1-1）对芽造成相当大的损害（死亡或畸形）。
The Freesia is an important cut flower in the Netherlands. However, its keeping quality is moderate. From detached inflorescences held in water up to 40% of the buds does not grow out to give flowers. Malformation of buds and flowers also occurs. It is not yet understood which role ethylene plays in the inflorescence development of Freesia. A maximum production of about 8 nl.inflorescence-1.h-1 is measured. There is no evidence that senescences of individual florets is preceded or accompanied by a higher ethylene production. Ethylene production of waterstressed inflorescences is higher than that of non-stressed inflorescences. An ethylene peak is reached at day 3 after the stress period for waterstressed inflorescences, at day 4 for the non-stressed inflorescences. After the ethylene peak the production rapidly declines to a low level. Until then no difference in the rate of senescence of individual flowers of an inflorescence is observed when stressed and non-stressed flowers are compared. However, more malformation and dying of buds occurs in the waterstressed inflorescences. Freesia inflorescences are very sensitive to ethylene. Exposure to ethylene concentrations (ranging from 0.05 to 1.0 μ1.1-1) causes considerable damage to buds (die or get malformed).