A Study on Main Drought Resistant Index of Land Rice

doi:10.3321/j.issn:1000-7091.1994.04.002

Abstract

Abstract: The drought resistant index of land rice varieties DongluTuiguang 1 andHejiang 5) under the condition of water deficit in field cultivation was determined, the physio-logical reaction of these varieties in water stress was analysed, and their drought resistance was studied. The content of free proline and soluble sugar of leaves, membrane permeabilityof leaves cells, relative water content of tissue, lost water ratio of isolated leaves androot-shoot ratio can act as drought resistant index of land rice under water stress. These in-dexes can be used to comprehensively appraise drought resistance of these varieties bysubordinative fuzzy function.Hejiang 5 is a weak resistant variety in. all period, Donglu 1 is astrong resistant variety in all,period and Tuiguang 1 is a strong resistant variety in pre-periodand is a weak resistant variety in post-period.

Key words: Land rice, Drought resistance, Physiological index, Comprehensive appraise

CLC Number:

S511.601

Lu Fengshan, Hou Jianhua. A Study on Main Drought Resistant Index of Land Rice[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1994, 9(4): 7-12. doi: 10.3321/j.issn:1000-7091.1994.04.002.

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