STUDIES ON TUBERIZATION OF SOLANUM-ANDIGENA .2. GROWTH HORMONES AND TUBERIZATION
STUDIES ON TUBERIZATION OF SOLANUM-ANDIGENA .2. GROWTH HORMONES AND TUBERIZATION
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DOI：
10.1111/j.1469-8137.1974.tb01311.x
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发表时间：
1974-01-01
期刊：
影响因子：
9.4
通讯作者：
WAREING, PF
中科院分区：
文献类型：
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作者：
KUMAR, D;WAREING, PF
本研究通过（1）外源生长调节剂的应用和（2）研究块茎诱导和非诱导条件下内源激素水平的变化，研究了各种生长调节物质在Solarium andigena结薯中的作用。在短日照条件下，赤霉素抑制了插条的结瘤;吲哚乙酸和激动素（6-糠基氨基嘌呤）在低浓度下对块茎生长有轻微的刺激作用，但在高浓度下抑制了块茎的生长。施用（2-氯乙基）三甲基氯化铵（CCC）促进了在非诱导长日照条件下生长的植物和在块茎组织的分离塞上产生的芽中的块茎形成。CCC的块茎诱导效应不被同时施用GA 3逆转。短日照条件下内源赤霉素水平显著降低，但长日照和短日照条件下内源脱落酸水平无差异。当诱导的植物从短日照条件转移到长日照条件时，降低的赤霉素水平维持至少2周。在促进结薯的条件下施用CCC引起赤霉素水平降低。生长激素的作用在块茎的调节进行了讨论。
SummaryThe role of various growth‐regulating substances in tuberization inSolarium andigenawas studied (1) by application of exogenous growth regulators, and (2) by studying variation in the levels of endogenous hormones under tuber‐inducing and non‐inducing conditions. In short‐day induced cuttings tuberization was inhibited by gibberellic acid; indole acetic acid and kinetin (6‐furfuryl amino purine) caused slight stimulation of tuber growth at low concentrations, but inhibited it at higher concentrations. Application of (2‐chloroethyl) trimethyl‐ammonium chloride (CCC) promoted tuberization in plants growing under non‐inducing long‐day conditions and in buds produced on isolated plugs of tuber tissue. The tuber‐inducing effects of CCC were not reversed by simultaneous application of GA3. Levels of endogenous gibberellins decreased markedly under short‐day conditions, but there was no difference in the levels of endogenous abscisic acid under long and short days. The reduced levels of gibberellins were maintained for at least 2 weeks when induced plants were transferred from short‐day to long‐day conditions. Application of CCC under conditions which promoted tuberization caused a reduction in gibberellin levels. The role of growth hormones in the regulation of tuberization is discussed.