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首页> 外文期刊>Journal of the American Society for Horticultural Science >Thermostability of cell membranes as a measure of heat tolerance and relationship to flowering delay in chrysanthemum
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Thermostability of cell membranes as a measure of heat tolerance and relationship to flowering delay in chrysanthemum

机译：细胞膜的热稳定性可以衡量菊花的耐热性以及与开花延迟的关系

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摘要

Identification of heat-tolerant chrysanthemum [Dendranthema xgrandifolia (Ramat.) Kitamura] genotypes for commercial production in hot areas of the world is desirable. The extent to which electrolyte leakage from chrysanthemum leaf discs, measured using a test for cell membrane thermostability (CMT), could be related to the delay in flowering induced by heat in the field-grown plants was determined. The relationship between the relative injury (RI) occurring in leaf tissue discs of chrysanthemum cultivars and treatment temperature was sigmoidal. A single temperature treatment at 50 degreesC resulted in injury values near the midpoint of the sigmoidal response curve and showed the greatest sensitivity in detecting genotypic differences in heat tolerance. The cultivars with a low RI value are those with the greater CMT and shorter heat-induced delay to flowering.
机译：鉴定耐热菊[Dendranthema xgrandifolia（Ramat。）Kitamura]基因型以便在世界炎热地区进行商业生产是合乎需要的。确定了使用细胞膜热稳定性（CMT）测试测得的菊花叶圆盘电解质泄漏的程度，可能与田间种植的植物因热引起的开花延迟有关。菊花叶片组织盘中发生的相对伤害（RI）与处理温度之间呈S形关系。在50°C的温度下进行单一温度处理会导致伤害值接近S形曲线的中点，并且在检测耐热性的基因型差异方面显示出最大的敏感性。 RI值低的品种是那些具有较高的CMT和较短的热诱导开花延迟的品种。

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