|Table of Contents|

Photosynthetic Characteristics of Kiwiberry (Actinidia arguta) in Two Different Habitats

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年01
Page:
24-34
Research Field:
Publishing date:

Info

Title:
Photosynthetic Characteristics of Kiwiberry (Actinidia arguta) in Two Different Habitats
Author(s):
LU Liyuan; LIU Zhenpan; SUN Yang; SONG Jianyu; ZHANG Yue; YOU Wenzhong
(Liaoning Economic Forest Research Institute,Dalian,Liaoning 116031)
Keywords:
kiwiberry; different habitats; photosynthetic characteristics; correlation analysis
PACS:
-
DOI:
10.11937/bfyy.20213117
Abstract:
Three-year-old ‘Longcheng 2’ kiwiberry cultivated under the forest and in the open field were taken as materials,the light response curve of net photosynthetic rate (Pn) and the diurnal variation of Pn were measured by Li-6400 (Licor,Lincoln,USA) portable photosynthetic apparatus.The photosynthetic characteristics and its influencing factors of kiwiberry cultivated in different habitats were analyzed in order to provide a reference for environment condition selection and management in the production and cultivation.The results showed that,1) except for the apparent quantum efficiency (AQY),kiwiberry cultivated in the open field had higher maximum net photosynthetic efficiency (Pnmax),light compensation point (LCP) and light saturation point (LSP) than those cultivated under the forest.2) Pn of kiwiberry cultivated in the open field was higher than that of kiwiberry under the forest at all times of day.The decrease in Pn of kiwiberry cultivated under the forest during midday was resulted from non-stomatal limitation,but stomatal limitation occurred in Pn of kiwiberry cultivated in the open field.3) Pn of kiwiberry cultivated under the forest was significantly positively correlated with photosynthetically active radiation (PAR),stomatal conductance (Gs) and transpiration rate (Tr) (correlation coefficients were 0.713,0.543,0.497),and negatively correlated with intercellular carbon dioxide concentration (Ci) (-0.858).Pn of kiwiberry cultivated in the open field was significantly positively correlated with atmospheric carbon dioxide concentration (Ca),relative humidity (RH) and stomatal conductance (Gs) (0.440,0.405,0.696),and negatively correlated with air temperature (Ta) (-0.459).The kiwiberry cultivated under forest had higher low-light utilization and conversion ability but lower high-light utilization ability than those in open field.During the whole day,the kiwiberry cultivated in open field had stronger photosynthetic capacity.The main problem in under-forest cultivation environment was weak illumination;the problems in open field cultivation environment were strong illumination and high temperature.

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Last Update: 2022-04-01