Regulation of Fruit Set in Cucumis sativus by Auxin and an Auxin Transport Inhibitor1
Regulation of Fruit Set in Cucumis sativus by Auxin and an Auxin Transport Inhibitor1
复制标题
生长素和生长素转运抑制剂对黄瓜坐果的调节1
DOI：
10.21273/jashs.105.4.603
复制
发表时间：
1980
影响因子：
1.9
通讯作者：
D. Cantliffe
中科院分区：
文献类型：
--
作者：
J. T. Watkins;D. Cantliffe
研究了人工合成生长素萘乙酸（NAA）和生长素运输抑制剂2-氯-9-羟基芴-9-羧酸甲酯（chlorflurenol）对黄瓜（Cucumis sativus L.）被查在温室内，外源施用NAA和氯芴醇，根据施用部位的不同，对坐果有促进作用。在生长室中，当NAA直接施加在柱头上时，24小时后少量移到子房中。然而，当在子房上施加生长素时，在子房和其他植物碎片中检测到显著量的14 C NAA。花梗部位NAA在花梗和茎段中的积累量高于柱头和子房部位。Chlorflurenol的应用程序的花序梗抑制NAA的移动出子房，并导致生长素在该组织中的积累。NAA运动在完整的植物是类似的切除部分：chlorflurenol适用于花序梗减少NAA运动的卵巢。因此，氯芴醇对坐果的调节可能是通过限制生长素从子房的移动来实现的。子房中生长素积累的增加可能触发坐果和随后的生长。
The involvement of naphthaleneacetic acid (NAA), a synthetic auxin, and methyl-2-chloro-9-hydroxy-fluorene-9-carboxylate (chlorflurenol), an auxin transport inhibitor, in fruit set in cucumber (Cucumis sativus L.) was investigated. In the greenhouse, exogenously applied NAA and chlorflurenol enhanced fruit set depending on the position of application. In the growth chamber, when NAA was applied directly on the stigma, a small quantity moved into the ovary after 24 hours. However, when auxin was applied on the ovary, significant quantities of 14C NAA were detected in the ovary and other plant pieces. When NAA was placed on the peduncle, more accumulated in peduncle and stem sections than when NAA was placed on the stigma or ovary. Chlorflurenol applications to the peduncle inhibited movement of NAA out of the ovary and resulted in accumulation of auxin in that tissue. NAA movement in the intact plant was similar to that of excised sections: chlorflurenol applied to the peduncle reduced NAA movement out of the ovary. Thus, the regulation of fruit set by chlorflurenol may be through the restriction of auxin movement from the ovary. The increased auxin accumulation in the ovary may trigger fruit set and subsequent growth.