https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner3.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner4.jpg|#|灵芝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner5.jpg|#|桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
https://www.ahs.ac.cn/images/0513-353X/images/top-banner7.jpg|#|蝴蝶兰
https://www.ahs.ac.cn/images/0513-353X/images/top-banner8.jpg|#|樱桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (3): 647-656.doi: 10.16420/j.issn.0513-353x.2021-1139

• Research Notes • Previous Articles     Next Articles

Photosynthetic Characteristics of Ziziphus jujuba‘Dongzao’Under Protected Cultivation

LI Yuting1, REN Lihui1, WANG Yuan2, ZHOU Aiying3, YANG Wei4, HUANG Jian1,*()   

  1. 1Key Laboratory of National Forestry and Grassland Administration on Silviculture in Loess Plateau,College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100,China
    2College of Life Sciences,Northwest A&F University,Yangling,Shaanxi 712100,China
    3Jujube Research Center of Dali,Dali,Shaanxi 715100,China
    4Forestry Technology Extension Station of Dali,Dali,Shaanxi 715100,China
  • Received:2022-08-22 Revised:2022-10-28 Online:2023-03-25 Published:2023-04-03
  • Contact: *(E-mail:huangj@nwsuaf.edu.cn

Abstract:

Protected cultivation provides an operative way to advance‘Dongzao’jujube mature season and avoid fruit crack when raining,leading to high economic benefits. However,environmental control in facility is critical for ensuring tree growth and fruit production of‘Dongzao’jujube under protected cultivation. The dynamics and ability of photosynthesis could reflect the environmental amenity for plants. In order to explore the photosynthetic characteristics of‘Dongzao’jujube and the main associated constraints under protected cultivation,the photosynthetic characteristics under three kinds of cultivation models,i.e.,open filed,rain shelter and greenhouse,were measured and compared at full-bloom stage. The results showed that environmental conditions in protected cultivation were largely changed compared with those in open field,especially for photosynthetically active radiation(PAR)and vapor pressure deficiency(Vpd). The diurnal change trend of net photosynthetic rate(Pn)at afternoon was higher than that at morning in greenhouse,but the diurnal change trend of Pn under shelter decreased gradually. There was no significant difference in mean Pn among three cultivation models. The light saturated point(LSP)among shelter and greenhouse were significantly higher than that of open field. The Pn was significantly correlated with several factors,such as environmental temperature(T),PAR,relative humidity(RH)and Vpd. In particular,Pn was positively correlated with T and Vpd in greenhouse while negatively in open field and shelter. ‘Dongzao’jujube under three cultivation models showed the midday depression of photosynthesis were uncovered,which was mainly caused by stomatal limitation under open field,while under shelter and greenhouse,stomatal limitation and non-stomatal limitation were both caused the midday depression of photosynthesis. In brief,environmental conditions in protected cultivation were largely changed,and the diurnal change trend of Pn under protected cultivation were alternated correspondingly. According to these results,the photosynthesis ability of‘Dongzao’can be improved by optimizing temperature and humidity under protected cultivation.

Key words: Ziziphus jujuba, protected cultivation, net photosynthetic rate, stomatal conductance limitation, light saturation point

CLC Number: