Effect of Salt Stress on Growth and Physiological Characteristics of Dry Pepper(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of Salt Stress on Growth and Physiological Characteristics of Dry Pepper

Author(s):: YU Chengzhi; WANG Shuang; LIU Jianping; YANG Yanjie; (College of Horticulture，Qingdao Agricultural University，Qingdao，Shandong 266109)

Keywords:: dry pepper; salt stress; plant growth; physiological characteristics

Abstract:: Taking 4 dry pepper strains as experimental materials，effect of dry weight and fresh weight，water content，leaf soluble sugar content，soluble protein content，chlorophyll content，ascorbic acid content and early yield were researched in sunlight greenhouse.3 salt stress intensities ((2.0±0.2)，(3.0±0.2)，(4.0±0.2)mS/cm) were set in this paper by pouring sodium chloride solution to the cultivation matrix which simulated salt stress treatment，and the same cultivation matrix without sodium chloride solution was taken as control.The results showed that plant fresh weight and chlorophyll content of 4 stains significantly decreased with salt concentration treatment increasing.And plant dry weight and leaf soluble sugar，soluble protein content significantly increased by low salt treatment and significantly decreased by the high.Early yield decreased significantly following the salt concentration increased.The EC range for suitable cultivation of test dry pepper strains was 1.2-2.0 mS/cm.There was significant difference among 4 dry pepper strains in the response to salt stress.The strain‘14038’was inhibited minimum by salt stress in plant morphology，physiological index of leaves and early yield.The second was strain‘14038’.The growth and yield of stains‘14041’and‘14046’decreased significantly by salt concentration stress，were salt sensitive dry pepper strains.

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Last Update: 2015-08-18