|Table of Contents|

Effects of Different Tree Shapes on Canopy Structure and Photosynthetic Capacity of Plum

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年03
Page:
29-35
Research Field:
Publishing date:

Info

Title:
Effects of Different Tree Shapes on Canopy Structure and Photosynthetic Capacity of Plum
Author(s):
AN Baiyi1GU Na1LIU Xiaojia1ZHANG Yanbo2SONG Hongwei2LI Feng2
(1.College of Horticulture,Jilin Agricultural University,Changchun,Jilin 130118;2.Institute of Pomology,Jilin Academy of Agricultural Sciences,Gongzhuling,Jilin 136100)
Keywords:
Keywords:Prunus salicinatree shapecanopy structurephotosynthetic characteristics
PACS:
-
DOI:
10.11937/bfyy.20182534
Abstract:
Abstract:Pending plum variety ‘Gongzhuhong’ of Prunus salicina cultivated by Jilin Academy of Agricultural Sciences was used as experimental material,several parameters such as canopy structure,photosynthetic characteristics and chlorophyll fluorescence among plums with three kinds of tree shapes spindle-shape,Y-shape and naturally open center-shape had been determined in order to provide reference for identification of the best shape,improvement in the quality of fruit and increase in yield.The results showed that among the three different tree shapes,there were significant differences in branch compositions.All different types of branches had been listed in descending order by quantity,that was clustered branch>short branch>middle branch>long branch>super-long branch.The average stem length of one year branches of naturally open center-shape was significantly longer than spindle-shape and Y-shape.The average stem diameters between spindle-shape and naturally open center-shape were not significantly different from each other,but both were significantly larger than Y-shape.There were significant differences among the canopy characteristics of three tree shapes.Naturally open center-shape had relatively large leaf area index,light transmittance ratio and total radiation under canopy.The net photosynthetic rate of naturally open center-shape and Y-shape was obviously higher than spindle-shape.In terms of photosynthetic parameters such as net photosynthetic rate,Tr,Gs and WUE,bearing branches were better than vegetative branches in all three tree shape plums.As for chlorophyll fluorescence parameters such as φPSII,Fv/Fm,qP,qN and ETR,naturally open center-shape appeared best.Naturally open center-shape structure was the most reasonable canopy structure for its stronger photosynthetic capacity,higher photoelectron transfer efficiency and more carbohydrate accumulation,followed by Y-shape,and finally spindle-shape.

References:

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Last Update: 2019-03-14