Influences of open-central canopy on photosynthetic parameters and fruit quality of apples (Malus x domestica) in the Loess Plateau of China

doi:10.1016/j.hpj.2021.03.008

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	Influences of open-central canopy on photosynthetic parameters and fruit quality of apples (Malus x domestica) in the Loess Plateau of China
	Lin, Lu ; Niu, Zimian ; Jiang, Chuangdao 3; Yu, Lu ; Wang, Hongning 2; Qiao, Meiyu 3
刊名	HORTICULTURAL PLANT JOURNAL
	2022
卷号	8 期号:2 页码:133-142
关键词	Apple Open-central canopy Light environment Photosynthesis Thermal dissipation Photorespiration Fruit quality
ISSN号	2095-9885
DOI	10.1016/j.hpj.2021.03.008
文献子类	Article
英文摘要	Although open-central canopy (OCC) is popular in apple (Malus x domestica) orchards in Loess Plateau of China, its relevant photosynthetic mechanisms have not been elucidated. In this study, changes in photosynthetically active radiation ( PAR ), gas exchange, chlorophyll fluorescence quenching and fruit quality in apple trees were measured in OCC and compared with those in the conventional condensed round and large canopy (RLC). Results showed that light intercepted at different orientations was 44% higher by OCC than that by RLC. The improved light environment within OCC remarkably increased leaf maximum net photosynthetic rate (P-nmax) and significantly decreased stomatal limitation. Under high light, the ratio of photorespiratory rate to gross photosynthetic rate (P-r/P-g) in OCC was higher than that in RLC. Moreover, reversible component in non-photochemical quenching (r(qE)) was increased, while irreversible component (r(qI)) was decreased in OCC than in RLC. As a result, the fruit quality in OCC was greatly boosted as evidenced by the significantly increased single fruit weight, fruit flesh firmness and fruit soluble solid contents and the sharply decreased fruit titratable acid contents. PAR intercepted by the canopy and the fruit soluble solid contents, leaf P-nmax or single fruit weight were positively correlated, while PAR or P-nmax was negatively correlated with the fruit titratable acid contents. Accordingly, the improved crown light environment and the enhanced leaf photosynthetic performance and photoprotective capacity in OCC led to the boosted fruit quality.
学科主题	Plant Sciences ; Horticulture
电子版国际标准刊号	2468-0141
出版地	BEIJING
WOS关键词	BIOCHEMICAL-MODEL ; CO2 ASSIMILATION ; LEAVES ; PHOTORESPIRATION ; ORCHARD ; YIELD
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	KEAI PUBLISHING LTD
WOS记录号	WOS:000772636700001
资助机构	Chi-nese National Key RD Program [2016YFD0201118] ; Shanxi Province Key RD Program [201903D211001-2-4-1] ; Agricultural Sci-Tech Innovation Project Program of Shanxi Academy of Agricultural Sciences [YGC2019TD08-2] ; Agricultural Sci-Tech Innovation Research Program of Shanxi Academy of Agricultural Sciences [YCX2020402, YCX2020302] ; Prior Support Program of Shanxi Academy of Agricultural Sciences [YCX2018D2YS04]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/28495]
专题	中科院北方资源植物重点实验室
作者单位	1.Shanxi Agr Univ, Inst Pomol, Taiyuan 030031, Shanxi, Peoples R China 2.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China 3.Shanxi Agr Univ, Coll Hort, Taiyuan 030031, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Lin, Lu,Niu, Zimian,Jiang, Chuangdao,et al. Influences of open-central canopy on photosynthetic parameters and fruit quality of apples (Malus x domestica) in the Loess Plateau of China[J]. HORTICULTURAL PLANT JOURNAL,2022,8(2):133-142.
APA	Lin, Lu,Niu, Zimian,Jiang, Chuangdao,Yu, Lu,Wang, Hongning,&Qiao, Meiyu.(2022).Influences of open-central canopy on photosynthetic parameters and fruit quality of apples (Malus x domestica) in the Loess Plateau of China.HORTICULTURAL PLANT JOURNAL,8(2),133-142.
MLA	Lin, Lu,et al."Influences of open-central canopy on photosynthetic parameters and fruit quality of apples (Malus x domestica) in the Loess Plateau of China".HORTICULTURAL PLANT JOURNAL 8.2(2022):133-142.