茶树叶水势、萎蔫系数与耐旱力的关系

Relation of water potential and wilting coefficient of tea leaf to drought tolerance of tea clones

本文研讨厂“七五”以来新育成的浙农121等6个茶树良种叶水势和萎蔫系数与耐旱力的关系。结果表明：不同供水水平，不同茶树品种叶水势与美蔫系数的变化趋势大体一致；高湿、中湿条件下，叶水势变化小，低温条件下，叶水势变化明显，下降幅度大；叶水势高，萎蔫系数低的茶树品种，耐旱力较强。

Relationship between of water potential of tea leaf, the wilting coefficient and drought tolerance of six new tea clones including Zhenong 121 was studied. The results indicated that: Under the different moisture levels, the change of the water potential in tea leaf and wilting coefficient among the different tea clones are roughly the same. Under the high and medium soil moisture levels. the change of the water potential in tea leaf is narrow, and under the lower soil mlisture levels, the change is quite clearly and there is a big decrease. Tea clones with higher water potential and lower wilting coefficient have greater drought tolerance.