Drought-resistance Characteristics of Different Fertilizer and Water Types of Wheat under Water Stress

doi:10.7668/hbnxb.2010.06.040

Abstract

Abstract: The seed germination status and physiological and biochemical changes of wheat seedlings of six different fertilizer and water types of wheat were studied under the water stress of PEG-6000, and the drought resistance was identified under the condition of trough cultivation with rain-proof shelter.The results showed that the length of cole· optiles, relative germination rate and nitrate reductase activity decreased, the soluble sugar content and MDA content increased, the root activity revealed a appreciably increasing tendency and then declined with the water stress time. Compared with irrigated field cuhivars, the length of coleoptiles, relative germination rate, nitrate reduetase activity and the root activity of dry land cuhivam Qingmai 6, Jihan 5034 and Lumai 21 were relatively higher and decreased more slowly, the soluble sugar content was higher and its growth range was larger along with the stress time, MDA con— tent increased comparatively slowly.The length of coleoptiles, relative germination rate, nitrate reductase activity and root activity had a extremely significant relation with drought—resistance index, which could be considered as early.

Key words: heat, Water stress, Drought—resistance characteristics, Fertilizer and water types

CLC Number:

S512.1

ZHANG Ya-qian, LIN Qi, JIANG Wen, LIU Yi-guo, LI Ling-yan. Drought-resistance Characteristics of Different Fertilizer and Water Types of Wheat under Water Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(6): 205-210. doi: 10.7668/hbnxb.2010.06.040.

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