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首页> 外文期刊>The Journal of Horticultural Science & Biotechnology >Cold treatments enhance responsiveness to gibberellin in stock (Matthiola incana (L.) R.Br.)
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Cold treatments enhance responsiveness to gibberellin in stock (Matthiola incana (L.) R.Br.)

机译：进行冷处理可提高对赤霉素的反应能力（Matthiola incana（L.）R.Br.）

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摘要

Endogenous GAs have been suggested as regulators of stem elongation and flowering of cold-requiring plants. Here, the relationship between temperature conditions and responsiveness to GA_4 on stem elongation and flowering of stock (Matthiola incana) was investigated. The optimum temperature for induction of flower bud initiation was 10 deg C, and the minimum duration was 20 d in the late flowering cv. Banrei; the type of cold treatment effect on flowering was classified as a "direct effect". Stem elongation was markedly promoted by cold treatment regardless of flower bud initiation. The cold treatment amplified the stem elongation response to GA_4. The GA_4 level necessary for flower bud initiation was lower in the 10 deg C treatment than in the 15 deg C treatment, and it became lower at longer durations of cold treatment. These results indicate that the cold treatments enhance responsiveness to GA_4 not only in the stem elongation process but also in the flower bud initiation process and that the development of responsiveness to GA_4 may correlate with the temperature and duration of cold treatment.
机译：已经建议内源GAs作为需要冷的植物的茎伸长和开花的调节剂。在这里，研究了温度条件和对GA_4对茎伸长和砧木开花的响应性（Matthiola incana）之间的关系。诱导花芽萌发的最佳温度为10℃，开花后期的最短持续时间为20 d。班雷冷处理对开花的影响的类型被分类为“直接影响”。不论花蕾萌芽如何，冷处理均可显着促进茎伸长。冷处理放大了茎伸长对GA_4的响应。花蕾萌发所必需的GA_4水平在10℃处理下低于15℃处理，并且在较长的冷处理持续时间内降低。这些结果表明冷处理不仅在茎伸长过程中而且在花芽萌发过程中增强了对GA_4的响应性，并且对GA_4的响应性的发展可能与冷处理的温度和持续时间有关。

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