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以耐旱性不同的浙农１１３、福鼎白毫、云旗和紫笋等４个茶树品种的２年生扦插苗为材料，研究了不同强度水分胁迫下茶树叶片含水量、内源激素和Ｐｒｏ含量的消长。结果表明，在水分胁迫下：茶树叶片含水量浙农１１３＞福鼎白毫＞云旗＞紫笋；叶片内源ＩＡＡ、ＡＢＡ和Ｐｒｏ迅速积累，ＺＴ含量下降，ＡＢＡ含量的变化与ＩＡＡ含量呈线性正相关；ＩＡＡ含量变化与叶片含水量呈线性负相关；Ｐｒｏ含量的变化与叶片含水量呈线性负相关，与ＡＢＡ含量呈线性正相关，轻度干旱条件下Ｐｒｏ的增加与抗旱性有关。耐旱型茶树具有相对较高的ＡＢＡ／ＺＴ比值和水分利用率，两者可作为耐旱型茶树的育种指标
The 2 - year - old cuttings of 4 tea cultivars (Zhenong 113, Fudingbaizhao, Yunqi and Zijin) with different drought tolerance were used to study the effects of different water stress on the leaf water content, endogenous hormones and Pro content The growth and decline. The results showed that under water stress, the contents of IAA, ABA and Pro in leaves of Zinong 113> Fuding Baige> Yunqi> Zijin were all increased rapidly in Z. mongolica leaves, and the content of ZT decreased. The change of ABA content was linear with that of IAA There was a linear negative correlation between IAA content and leaf water content. Pro content was linearly negatively correlated with leaf water content and positively correlated with ABA content. Under the mild drought condition, the increase of Pro was related to drought resistance. Drought-resistant tea trees have a relatively high ABA / ZT ratio and water use efficiency, both of which can be used as breeding indicators of drought-tolerant tea trees