赤霞珠净光合速率随物候期变化趋势的研究  

Variation of Net Photosynthetic Rate of the Cabernet Sauvignon with Phenological Period

作　　者：张振文[1] 房林[1] 

机构地区：[1]西北农林科技大学葡萄酒学院陕西省葡萄与葡萄酒工程技术研究中心,陕西杨陵712100

出　　处：《西北林学院学报》2011年第2期38-41,共4页Journal of Northwest Forestry University

基　　金：国家现代农业产业技术体系建设专项基金(nycytx-30-zp-04)

摘　　要：利用LI-6400便携式光合作用测定仪研究了赤霞珠(Cabernet Sauvignon)不同节位叶片净光合速率(Pn)随葡萄物候期的动态变化规律。结果表明:(1)在不同物候期,赤霞珠新梢叶片净光合速率(Pn)的变化存在一定差异,果实成熟期叶片净光合速率(Pn)的变化相对较小,开花期次之,果实转色期稍大,浆果膨大期最大。(2)在开花期、浆果膨大期,赤霞珠新梢第1节位至第10节位叶片净光合速率(Pn)随着叶片节位的升高呈先上升后下降的趋势,最大值分别出现在第5节位(15.60μmol.m-2.s-1)和第7节位(17.11μmol.m-2.s-1)。(3)在果实转色期和果实成熟期,赤霞珠新梢叶片净光合速率(Pn)随节位的升高而逐渐升高,最大值均出现在第10节位(15.55μmol.m-2.s-1,17.28μmol.m-2.s-1)。叶片净光合速率(Pn)峰值随着时间推移有向较高节位叶片移动的趋势。An experiment was conducted to investigate the dynamics of net photosynthetic rate（P-n） of the different leaf position influenced by phenological period shifting using LI-6400 portable photosynthesis system on the Cabernet Sauvignon grapevine.The results showed as follows：（1） The P-n of Cabernet Sauvignon changed with phenological periods,and the order of P-n values were ranked as： maturity period anthesis turning-color period berry expanding stage.（2） During the stage of anthesis and berry expanding,the P-n values of leaves at 1-10 node positions increased firstly and then decreased.The maximum value of P-n was at 5 th leaf position（15.60 μmol·m-2·s-1）and 7th leaf position（17.11 μmol ·m-2·s-1）.（3） The P-n was increasing with rising of leaf node positions,and the maximum value of P-n appeared at 10 th leaf node position（15.55 μmol ·m-2·s-1,17.28 μmol ·m-2·s-1） in the verasion period and maturity period.The peak of P-n was moving to the upper node position leaves with the vine growing.

关 键 词：赤霞珠 物候期 净光合速率 

分 类 号：S663.1[农业科学—果树学]