Effect of Soil Water Stress on Physiological Characteristics in Different Winter Wheat Cultivars

doi:10.7668/hbnxb.2014.02.033

Abstract

Abstract: The effect on some physiological characteristics in flag leaf of different wheat cultivars (Qingmai 6, Lumai 21, Liangxing 99, Yannong 21, Yannong 24, Jimai 22) were studied under drought and well watered condi- tions. The results showed that the soluble protein content, as well as activity of the protective enzyme system SOD, CAT and POD decreased under drought stress after anthesis, the content of MDA and the soluble sugar content in- creased at the same conditions. Compared with the other four cultivars, the soluble sugar content in flag leaf of Qing- mai 6 and Yannong 21 were relatively higher and increased quickly. The soluble protein content and the activity of SOD, CAT and POD were higher and the decreased amplitude was mild at the same time. The content of MDA was lower than other cultivars and increased slowly with the development of drought stress and the decreased amplitude of yield and yield components were small. These indicated that these two cultivars could maintain a relatively superi- or physiological state under drought stress, and its metabolic function and drought resistance were strong.

Key words: Wheat, Soil water stress, After anthesis, Physiological characteristic

CLC Number:

S512.01

SONG Xin-ying, WU Shuang, ZHANG Hong-sheng, LIN Qi, MU Ping. Effect of Soil Water Stress on Physiological Characteristics in Different Winter Wheat Cultivars[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(2): 174-180. doi: 10.7668/hbnxb.2014.02.033.

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