作　　者： ; ; ; ;

机构地区： 青岛农业大学农学与植物保护学院茶叶研究所

出　　处： 《中国农学通报》 2009年第16期215-218,共4页

摘　　要： 以叶片解剖结构指数较高的30份种质材料为研究对象,测定和分析它们的叶片生理指标和田间冻害发生程度。结果表明,30份种质材料的质膜相对透性(X1)、可溶性糖含量(X2)、可溶性蛋白含量(X3)和冻害发生程度都存在显著差异;叶片生理指数(Y1)的计算公式为Y1=0.45X1+0.3X2+0.25X3;冻情指数(Y2)的逐步回归方程为Y2=2.799+0.050X1-0.401X2-1.850X3;30份种质材料被聚类成三个不同特点的类群,并且可以判断第一、二类群中的19份材料具有很强的抗寒能力。茶树叶片生理的综合评价体系,可应用于茶树幼苗期抗寒性的鉴定,从而提高抗寒种质材料的筛选效率。 Physiological index of leaves were analyzed and frozen injury in field were investigated, which were sampled from thirty specimens of tea germplasm resources proved to have a high index of leave anatomical structure. The results indicated that four indexes of those gemplasms varied significantly, including relative permeability of plasma （X1）, content of soluble sugar （X2）, content of soluble protein （X3） and frozen injury. The computing formula of physiological index of leaves （Y1） was made to be Y1 = 0.45X1 ＋ 0.3X2 ＋ 0.25X3. The stepwise regressive model of frozen injury index （1：2） was made to be ]：2 = 2.799 ＋ 0.050X1- 0.401X2- 1.850X3. Those germplasms could be clustered to three different groups, among which nineteen germplasms belonged to the first group and the second groups were well-judged to have strong resistance to cold. The evaluation system built by physiological index of leaves could be used to identify cold resistance in period of young seedling, which could remarkably raise the efficiency in screening tea germplasm resources resistant to cold.

关 键 词： 越冬期 茶树 叶片生理指数 种质材料 抗寒性

领　　域： [生物学]