盐胁迫对干制辣椒生长和生理特性的影响  

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

作　　者：于成志[1] 王爽[1] 刘建萍[1] 杨延杰[1] 

机构地区：[1]青岛农业大学园艺学院,山东青岛266109

出　　处：《北方园艺》2015年第15期7-11,共5页Northern Horticulture

基　　金：山东省蔬菜创新团队资助项目(SDAIT-02-022-06);山东省农业重大应用技术创新资助项目(681407);山东省农业良种工程资助项目(6682214049);山东省农业科技成果转化资金资助项目(6213h3);青岛市民生计划资助项目(13-1-3-97-nsh)

摘　　要：在日光温室内,以干制辣椒为试材,用NaCl溶液浇灌栽培基质以模拟创造盐胁迫环境,设3个盐胁迫梯度（（2.0±0.2）、（3.0±0.2）、（4.0±0.2）mS/cm）,以无NaCl胁迫的相同基质栽培的植株为对照,测定了盐胁迫对4个干制辣椒品系植株干鲜重、含水量,叶片可溶性糖、可溶性蛋白质、叶绿素、抗坏血酸的含量和前期产量的影响。结果表明：干制辣椒植株鲜重和叶片叶绿素含量随盐处理浓度增加呈下降趋势;植株干重和叶片中可溶性糖、可溶性蛋白质含量在低盐浓度处理中显著增加,高盐浓度明显降低的趋势;干制辣椒前期产量随盐浓度增加显著下降。供试干制辣椒品系的适宜栽培环境EC范围为：1.2～2.0mS/cm。4个辣椒品系对盐胁迫的响应差异显著,其中品系‘14038’植株形态和叶片生理指标受盐胁迫抑制程度最小,前期产量下降幅度最低,耐盐性最好;品系‘14042’抗性生理指标表现出一定优势,前期产量下降幅度较小,耐盐性次之;‘14041’和‘14046’2个品系的生长量和产量随盐胁迫浓度增加均显著降低,表现为不耐盐。Taking 4dry 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.3salt 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 4stains 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 1.2-2.0mS/cm.There was significant difference among 4dry 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.

关 键 词：干制辣椒 盐胁迫 植株生长 生理指标 

分 类 号：S641.3[农业科学—蔬菜学]