2009•Xi'nan nongye xuebaoRequires access

Physiology Study of Drought Resistance of Tall Fescue in the Seedling Stage

Zhao XiangYong, Chen Pei-yan, Qinghua Yuan, HE Sheng-jiang

Abstract

Using pot experiments with 6 Festuca arundinacea under sustaining drought stress,five physiological indexes(relative water content,keep water rate,free proline content,soluble sucrose content,relative permeability of cell membrane) were studied,and drought resistance were comprehensively assessed.The results showed that with the increasing of drought stress,relative water content and keep water rate decrease,but the free praline content,soluble sucrose content,relative permeability of cell membrane increase.However,the praline content change trend is inconsistent in different tall fescue varieties.According to the results of integrated evaluation,the order of drought resistance is Xiyihao(56)Traple A92-10092-l08xiyihao(3)83-96.

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Key concepts: Festuca arundinacea, Proline, Drought resistance, Seedling, Sucrose, Water content, Membrane permeability, Drought stress