摘要
以表型性状优良的50份黄山群体种种质材料为研究对象,测定和分析它们的叶片解剖结构。结果表明,50份种质材料的栅栏组织厚度与海绵组织厚度比值(X1)、上表皮厚度与海绵组织厚度比值(X2)、栅栏组织厚度与总厚度厚度比值(X3)、角质层厚度与总厚度比值(X4)以及海绵组织厚度与总厚度比值(X5)等都存在显著差异;提出叶片解剖结构指数(Y)的计算公式为Y=0.5X1+0.2X2+0.2X3+0.05X4+0.05X5;依据解剖结构指数50份种质材料及4个对照品种被聚类成三个不同特点的类群,并且可以预测第一、二类群中的30份材料具有较强的抗寒能力。茶树叶片解剖结构指数的评价体系,可应用于茶树幼苗期抗寒性的早期鉴定。
Anatomical structure of leaves sampled from fifty specimens of tea germplasm resources, which had distinct phenotypic character and were selected from the species of Huangshan population, were analyzed. The results indicated that five ratio of those gemplasms varied significantly, including palisade tissue thickness to spongy tissue thickness （X1）, upper epidermis thickness to spongy tissue thickness （X2）, palisade tissue thickness to total thickness （X3）, horny layer thickness to total thickness （X4）, and spongy tissue thickness to total thickness （Xs）. The computing formula of anatomical structure index of leaves （Y） was made to be Y=0.5X1＋ 0.2X2＋0.2X3 ＋ 0.05X4＋0.05X5. Those germplasms could be clustered to three different groups, among which thirty germplasms belonged to the first group and the second group was predicted to have strong resistance to cold. The evaluation system built by anatomical structure index of leaves could be used to identify cold resistance in period of young seedling.
出处
《中国农学通报》
CSCD
北大核心
2009年第9期126-130,共5页
Chinese Agricultural Science Bulletin
基金
青岛市科技发展计划项目"茶树优异种质资源的筛选与创新利用"(07-2-3-6-jch)
关键词
茶树
叶片解剖结构指数
种质材料
抗寒性
tea plant, anatomical structure index of leaves, germplasm resource, cold resistance
作者简介
第一作者：王玉，女，1969年出生，硕士，实验师。主要从事茶叶品质分析与生理研究。通信地址：266109山东省青岛市城阳区长城路700号青岛农业大学园林园艺学院，Tel：0532—88030231，E-mail：wangyutea@163．com。
通讯作者：丁兆堂，男，1964年出生，山东日照人，博士，副教授，研究方向为茶树遗传育种，通信地址：266109山东省青岛市城阳区长城路700号青岛农业大学园林园艺学院，Tel：0532—8803023l，E-mail：dzttea@163．com。
