不同品种猕猴桃叶绿素荧光参数的日变化研究

doi:10.14088/j.cnki.issn0439-8114.2022.13.015

摘要/Abstract

摘要： 为研究猕猴桃的生态适应性,以3种基源植物分布差异的猕猴桃栽培品种海沃德、黄金果及青海为材料,利用叶绿素荧光成像技术研究了短暂低温、遮阴、背部增光及日光强度变化对猕猴桃叶绿素荧光参数日变化的影响。结果表明,昆明并非3个品种的最适宜栽培区域,短暂低温、高温、高光强都会引起供试猕猴桃品种光合机构的损伤,而遮阴和背部打光能缓解这些环境因素对光合机构的损伤程度。光合机构的损伤修复与叶片热耗散有关,且修复能力的强弱与叶片的叶绿素含量有一定的相关性。在猕猴桃抗性品种的选育过程中可将叶绿素含量作为选择指标,同时在猕猴桃栽培中发生高温、高光及低温时,可采用遮阴或背部打光的方式缓解环境因素对植物的胁迫。

关键词: 猕猴桃, 短暂低温, 日光强, 叶绿素荧光成像

Abstract: In order to study the ecological adaptability of kiwifruit, the effects of transient low temperature, shading, back light and sunlight intensity on the diurnal variation of chlorophyll fluorescence parameters of kiwifruit were studied by using chlorophyll fluorescence imaging technology with three kiwifruit cultivars of Actinidia chinensis var. deliciosa. cv. Hayward, Actinidia chinensis cv. Hort16A and Actinidia arguta cv. Qinghai as materials. The results showed that Kunming was not the most suitable area for the three cultivars used in the present experiment, and transient low temperature, natural high temperature and high light intensity could all cause damage to the photosynthetic apparatus in the leaves of kiwi, while shading and back lighting could alleviate the damage degree of photosynthetic apparatus of these environmental factors. And the ability of damage repair of photosynthetic apparatus was related to the heat dissipation of leaves, and the strength of the repair ability had a certain correlation with the chlorophyll content of leaves. The results suggested that the chlorophyll content of leaves could be used as a selection index during the resistant breeding of kiwifruit. At the same time, when high temperature, high light and low temperature occur red in kiwifruit cultivation, shading or back lighting could be used to alleviate the harm of environmental factors on plants.

Key words: kiwi, transient low temperature, strong sunlight, chlorophyll fluorescence imaging

中图分类号:

S663.4

申婷, 董云龙, 王梦钦, 徐达, 严胜柒, 张云峰. 不同品种猕猴桃叶绿素荧光参数的日变化研究[J]. 湖北农业科学, 2022, 61(13): 73-81.

SHEN Ting, DONG Yun-long, WANG Meng-qin, XU Da, YANG Sheng-qi, ZHANG Yun-feng. Study on the diurnal changes of chlorophyll fluorescence parameters in different types of kiwifruit[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(13): 73-81.

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