[1]陈鑫林,朱灿灿,张仕杰,等.黑斑病胁迫下不同抗性薄壳山核桃品种光合作用的研究[J].北方园艺,2023,(07):34-40.[doi:10.11937/bfyy.20223352]
　CHEN Xinlin,ZHU Cancan,ZHANG Shijie,et al.Study on Photosynthesis of the Pecan Under the Stress of Black Spot Disease[J].Northern Horticulture,2023,(07):34-40.[doi:10.11937/bfyy.20223352]
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黑斑病胁迫下不同抗性薄壳山核桃品种光合作用的研究

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 期数: 2023年07 页码: 34-40 栏目: 出版日期: 2023-04-15
Title:
Study on Photosynthesis of the Pecan Under the Stress of Black Spot Disease
作者:
陈鑫林1; 2; 朱灿灿2; 张仕杰2; 陆小美3; 陈于2
（1.南京林业大学 林学院，江苏 南京 210037;2.江苏省中国科学院植物研究所，江苏 南京 210014；3.常州果美农业科技有限公司，江苏 常州 213245）
Author(s):
CHEN Xinlin1; 2; ZHU Cancan2; ZHANG Shijie2; LU Xiaomei3; CHEN Yu2
(1.College of Forestry,Nanjing Forestry University,Nanjing,Jiangsu 210037；2.Institute of Botany,Jiangsu Province and Chinese Academy of Sciences,Nanjing,Jiangsu 210014；3.Changzhou Guomei Agricultural Technology Co.Ltd.，Changzhou,Jiangsu 213245)
关键词:
薄壳山核桃; 黑斑病; 叶片; 光合作用; 叶绿素
Keywords:
pecan; black spot; leaf; photosynthesis; chlorophyll
DOI:
10.11937/bfyy.20223352
文献标志码:
A
摘要:
以具有不同抗性的5个薄壳山核桃品种‘波尼’‘新选1号’‘坎扎’‘马汉’和‘威奇塔’为试材，采用田间调查和仪器测量的方法，研究了黑斑病对5个品种染病叶片和对照健康无病症叶片的光合生理参数净光合速率（Pn）、蒸腾速率（Tr）、胞间CO2浓度（Ci）、气孔导度（Gs）和叶绿素相对含量的影响，以期为薄壳山核桃黑斑病的防治提供参考依据。结果表明：黑斑病胁迫严重影响薄壳山核桃的光合作用，净光合速率、蒸腾速率、气孔导度及叶绿素含量显著下降（P＜0.05）；胞间CO2浓度除‘坎扎’品种外，其它品种均显著上升（P＜0.05），说明非气孔因素可能是引起感病薄壳山核桃光合作用降低的主要原因之一。研究还发现抗性强的品种净光合速率、蒸腾速率、气孔导度和叶绿素含量下降幅度比敏感品种低，说明抗病性强的品种一定程度上能抵御黑斑病对光合作用的破坏。
Abstract:
Taking five pecan varieties with different resistance，‘Pawnee’‘Xinxuan 4-1’‘Kanza’‘Mahan’‘Wichita’ as test materials,field test and instrumental measurement methods were used.The effects of black spot disease on the photosynthetic physiological parameters of net photosynthetic rate (Pn),transpiration rate (Tr),intercellular CO2 concentration (Ci) and stomatal conductance (Gs),and the chlorophyll relative content of the disease leaf and healthy leaf were studied in five varieties,in order to provide reference for the control of black spot disease of pecan.The results showed that black spot significantly affected photosynthesis,and the net photosynthetic rate,transpiration rate,stomatal conductance and chlorophyll content were significantly decreased (P<0.05).The intercellular CO2 concentration of all cultivars except ‘Kanza’ were significantly increased (P<0.05),suggested that non-stomatal factors might be one of the main reasons for the decrease of photosynthesis of susceptible pecan.It was also found that the decrease range of net photosynthetic rate,transpiration rate,stomatal conductance and chlorophyll content of the resistant cultivars was lower than that of the sensitive cultivars,indicated that the resistant cultivars could delayed the damage of photosynthesis caused by black spot disease to a certain extent.

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备注/Memo

第一作者简介：陈鑫林（1998-)，男，硕士研究生，研究方向为薄壳山核桃病害调查防治。E-mail:1848026635@qq.com.责任作者：陈于（1986-），男，博士，助理研究员，现主要从事薄壳山核桃种质资源创新和病虫害防治等研究工作。E-mail：15150530195@163.com.基金项目：国家自然科学基金青年基金资助项目（32001344);江苏省自然科学基金青年资助项目（BK20200290）;常州市科技支撑计划（农业）资助项目（CE20212018）。收稿日期：2022-08-16

更新日期/Last Update: 2023-04-28