期刊
HORTICULTURE ENVIRONMENT AND BIOTECHNOLOGY
卷 61, 期 5, 页码 825-836出版社
KOREAN SOC HORTICULTURAL SCIENCE
DOI: 10.1007/s13580-020-00276-0
关键词
Actinidia valvata; Carbohydrate; Photosynthesis; Post-waterlogging; Waterlogging
类别
资金
- National Natural Science Foundation of China [31801846]
- Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences [CAAS-ASTIP-2018-ZFRI]
- Modern Agricultural Industry Technology of Henan Province [S2014-11]
- National Agricultural Science & Technology Center, Chengdu [NASC2019TI07]
Kiwifruit (Actinidiasp.) vines are poorly adapted to waterlogging stress.Actinidia valvatais more tolerant against waterlogging stress thanActinidia deliciosa, and the latter contains some common rootstocks that are frequently used in kiwifruit cultivation. Little is known about the responses ofA. valvatagenotypes against waterlogging stress and during post-waterlogging recovery. Here, we compared physiological traits of threeA. valvatagenotypes (KR1, KR3, and KR5) during waterlogging stress and recovery. Kiwifruit vines displayed water loss, a decline in the net photosynthetic rate, and inhibited shoot elongation during waterlogging. These three genotypes could endure long-term waterlogging owing to their unique root system configurations as well as by sustaining carbohydrate reserves in the roots. Feeder roots of KR1 vines were damaged earlier and lost water more quickly than the other genotypes. Under the same stress, KR3 formed adventitious roots more rapidly, while KR5 had an improved ability to control water loss in above-ground tissues. After reoxygenation, growth of vines was partially recovered due to water loss control, photosynthetic recovery, and carbohydrate replenishment. KR3 and KR5 recovered their growth earlier and replenished more carbohydrates than KR1 after re-aeration. During waterlogging, both the relative water content and carbohydrate levels of vines can limit the recovery efficiency after re-aeration. Our results revealed mutual and distinct responses of differentA. valvatagenotypes during waterlogging stress and recovery and provided more insight into the physiological basis of their adaptation to waterlogging stress.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据