Abstract

Info

Title:: Research on Photosynthetic Characteristics and Fruit Quality of High Light Use Efficiency Tree Shape on ‘Laiyang Pear’

Author(s):: Research on Photosynthetic Characteristics and Fruit Quality of? High Light Use Efficiency Tree Shape on ‘Laiyang Pear’; MU Hongmei，YU Qiang，LI Qingyu，WANG Yiju，JIANG Fudong,LI Yuanjun

Keywords:: (Yantai Academy of Agricultural Sciences Shandong Province; Yantai; Shandong 265500)

Abstract:: 6-year-old ‘Laiyang pear’ trees were used as matetials,the net photosynthetic rate（Pn）,stomatal conductance（Gs），transpiration rate（Tr）,intercellular CO2 concentration（Ci）,SPAD and fruit quality were measured between the horizontal tree system（HTS）and the delayed open central system（DLS）in order to determine the suitable tree shape for ‘Laiyang pear’ tree.The results showed that under the same lighting conditions,Pn,Gs,Tr on HTS gradually decreased from the outside to the inside,Ci increased;Pn,Gs，Tr on DLS gradually decreased from the outside to the inside,from top to bottom with significant difference,Ci increased.Compared HTS with DLS on single fruit weight，fruit firmness，contents of total souble solid，soluble sugar,titrable acid，TSS-acid ratio and sugar-acid ratio，consistency of fruit quality in different position of HTS was better than that of DLS.