HUBEI AGRICULTURAL SCIENCES ›› 2022, Vol. 61 ›› Issue (13): 73-81.doi: 10.14088/j.cnki.issn0439-8114.2022.13.015

• Horticulture & Local Products • Previous Articles     Next Articles

Study on the diurnal changes of chlorophyll fluorescence parameters in different types of kiwifruit

SHEN Ting1, DONG Yun-long1, WANG Meng-qin1, XU Da1, YANG Sheng-qi2, ZHANG Yun-feng1,2   

  1. 1. School of Life Sciences, Yunnan Normal University, Kunming 650500, China;
    2. Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Kunming 650500, China
  • Received:2021-02-03 Online:2022-07-10 Published:2022-08-10

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

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