摘要
在提出一种黄瓜营养生长耐热性评价方法的基础上,研究黄瓜耐热性与其叶片、根系和花粉性状的关系。结果表明:黄瓜营养生长的耐热性是高温下黄瓜产量形成的重要生理基础,花粉耐热性不能作为黄瓜耐热材料的筛选指标。高温下黄瓜叶片厚度、叶片栅栏组织厚度、叶片温度、气孔导度、蒸腾速率和根系干重与黄瓜营养生长耐热性呈显著线性相关,表明蒸腾降温是黄瓜营养系统避免高温伤害的重要机制。
<Abstrcat> After building a measurement of cucumber vegetative heat tolerance, we studied the relationship between heat tolerance of vegetative growth and yield formation in cucumber. Results showed that cucumber yield formation under high temperature depended on its vegetative heat tolerance strongly. Pollen heat tolerance was not a credible screening index for cucumber heat tolerance lines. There was significant linear correlation between cucumber vegetative heat tolerance and leaf thickness, palisade tissue thickness, leaf temperature, stomatal conductance, transpiration rate and root dry weight of cucumber seedlings growing under high temperature, which indicated that decreasing leaf temperature by transpiration was an important strategy to avoid heat injury of cucumber.
出处
《扬州大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2005年第2期83-85,共3页
Journal of Yangzhou University：Agricultural and Life Science Edition
基金
国家自然科学基金资助项目(30100123)
江苏省自然科学基金资助项目(BK2002403)
关键词
黄瓜
营养生长
花粉
产量形成
叶片解剖结构
蒸腾速率
cucumber
vegetative growth
pollen
yield formation
leaf anatomical structure
transpiration rate
