平榛与平欧杂交榛叶片光合特征

用LI-6400光合作用测定系统测量2个平榛种质（PZ1和PZ2）、3个平欧杂交榛品种（PDH、DW和YZ）的叶片光合特征。结果表明：5个榛子种质光饱和点为680～930μmol·m-2·s-1,光补偿点均小于50μmol·m-2·s-1,光饱和光合速率为8～17μmol·m-2·s-1,表观量子效率约为0.03～0.04;5个榛子种质的光合效率日变化曲线均呈双峰型,峰值分别出现于8：00和17：00时,这表明榛子种质较适应弱光条件下的栽培;不同种质间的光合效率存在一定的差异,光合效率的大小顺序大致为：PDH〉DW〉PZ1〉YZ〉PZ2;榛子CO2补偿点为45～70μmol·m-2·s-1,C...

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Published in浙江大学学报（农业与生命科学版） Vol. 38; no. 4; pp. 413 - 420
Main Author 刘剑锋 程云清 刘强 王占武 颜堃
Format Journal Article
LanguageChinese
Published 吉林师范大学 生命科学学院 ,吉林 四平 136000 2012
Subjects
光合特征
平榛
平欧杂交榛
平欧杂交榛
平榛
光合特征
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ISSN1008-9209
DOI10.3785/j.issn.1008‐9209.2012.04.009

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Summary:用LI-6400光合作用测定系统测量2个平榛种质（PZ1和PZ2）、3个平欧杂交榛品种（PDH、DW和YZ）的叶片光合特征。结果表明：5个榛子种质光饱和点为680～930μmol·m-2·s-1,光补偿点均小于50μmol·m-2·s-1,光饱和光合速率为8～17μmol·m-2·s-1,表观量子效率约为0.03～0.04;5个榛子种质的光合效率日变化曲线均呈双峰型,峰值分别出现于8：00和17：00时,这表明榛子种质较适应弱光条件下的栽培;不同种质间的光合效率存在一定的差异,光合效率的大小顺序大致为：PDH〉DW〉PZ1〉YZ〉PZ2;榛子CO2补偿点为45～70μmol·m-2·s-1,CO2饱和点为880～1 350μmol·m-2·s-1,RuBP（1,5-二磷酸核酮糖）最大再生速率为13～34μmol·m-2·s-1,羧化效率在0.03～0.05之间。本研究为东北榛子的栽培提供了科学依据。
Bibliography:33-1247/S
LI-6400/XT photosynthesis system was used to measure leaf photosynthetic characteristics of two Corylus heterophylla germplasms （PZ1 and PZ2） and three Corylus heterophylla × Corylus avellana hybrid hazelnut cultivars （PDH, DW and YZ）. The results showed that light saturation points of five hazelnut germplasms were from 680 to 930 umol, m-2 . s-1 , and their light compensation points were less than 50 umol . m-2 . s-1 . Their maximum net photosynthetic rates were from 8 to 17 umol. m-2.s-1, and their apparent quantum efficiencies were from 0.03 to 0.04. There were two peaks in photosynthesis changing curves of five hazelnut germplasms, and the peak values occurred at 8：00 and 17：00 o＇ clock, indicating that it was suitable for hazelnut to culture in weak illumination environment. There were differences in photosynthetic capability for the five hazelnut germplasms with the order as follows： PDH 〉 DW 〉 PZ1 〉 YZ 〉 PZ2. CO2 compensation point, CO2 saturation points, maximum RuBP regeneration rates and ca
ISSN:1008-9209
DOI:10.3785/j.issn.1008‐9209.2012.04.009