持续盐胁迫对制干辣椒光合作用的影响  

Effect of Sustainable Salt Stress on Photosynthesis of Dry Pepper

作　　者：李汉钊[1] 吉雪花[1] 郭鹏博[1] 贾昕[1] 杨曦[1] 

机构地区：[1]石河子大学农学院,新疆石河子832003

出　　处：《北方园艺》2016年第9期1-5,共5页Northern Horticulture

基　　金：国家自然科学基金资助项目(41361097);石河子大学高层次人才资助项目(RCZX201315)

摘　　要：以"日本金塔"、"赤峰板椒"、"改良佳线"3种制干辣椒为试材,从辣椒现蕾期开始,利用碳酸氢钠进行持续盐胁迫,分析3个品种的光合参数变化,探讨不同品种辣椒对持续盐胁迫的抗性反应。结果表明:持续盐胁迫下"改良佳线"的耐盐性较好,并且耐盐特征在处理早期即有表现;"日本金塔"的耐盐性次于"改良佳线",光合系统受到的胁迫程度较小;"赤峰板椒"的耐盐性较弱,长期盐胁迫下"赤峰板椒"光合系统受到较大的损伤;不同浓度盐处理结果表明,30mmol/L的盐浓度对3种辣椒的光合作用有一定的促进作用,60mmol/L的盐浓度对光合作用及荧光参数影响不显著,较高的盐浓度90mmol/L对3种辣椒的光合作用有明显的抑制作用。Pepper variety ‘Riben Jinta＇,‘Chifeng Banjiao＇and ‘Gailiang Jia Xian＇were taken as test materials,four concentrations of alkaline salt NaHCO_3 were treated at budding period continually,to make sure the salinity resistance of different kinds of dry peppers.During the treatment stage,some photosynthetic indicators and chlorophyll fluorescence parameters were analyzed to make sure which variety was more sensitive to alkaline salt.The results showed that‘Gailiang Jiaxian＇presented higher salt tolerance,and this tolerance appeared in the early stage;‘Riben Jinta＇was the second to salt tolerance,its photosynthetic systems were hardly affected by salt stress;‘Chifeng Banjiao＇showed weak salt tolerance,there was heavy damage on its photosynthetic system under long-term sustainable salt stress.Research of different concentration of alkaline salts suggested that,30mmol/L NaHCO3 promoted the photosynthetic characteristics of three dry peppers,60mmol/L NaHCO3 had little influence on photosynthetic indicators and fluorescence parameters,but 90mmol/L NaHCO3 inhibited the photosynthetic capacity and chlorophyll fluorescence.

关 键 词：持续盐胁迫 辣椒 光合 荧光 

分 类 号：S641.3[农业科学—蔬菜学]