耐盐黄瓜品种鉴定及萌芽期盐胁迫对黄瓜苗期耐盐性的影响  

Identification of Salt Tolerant Cucumber Varieties and the Effect of Salt Stress During Germination Stage on Salt Tolerance During Cucumber Seedling Stage

作　　者：沈兰兴 张小村 孔凡美[1] 吕紫佳 漆奕辉 孟婷婷 占楠彪 SHEN Lanxing;ZHANG Xiaocun;KONG Fanmei;LU Zijia;QI Yihui;MENG Tingting;ZHAN Nanbiao(College of Resources and Environment,Shandong Agricultural University,Tai′an,Shandong 271018,China)

机构地区：[1]山东农业大学资源与环境学院,山东泰安271018

出　　处：《肥料与健康》2024年第4期33-40,70,共9页Fertilizer & Health

基　　金：山东省重点研发计划(重大科技创新工程)项目“菜田和果园土壤修复成套技术研究与示范”(2021CXGC010801);山东省重点研发计划子课题“菜田和果园土壤有机污染及盐渍化(或酸化)耐性品种筛选及其机理”(2021CXGC010801-5)。

摘　　要：为明确不同黄瓜品种在萌芽期及苗期对NaCl胁迫的耐性差异,以常见的24个黄瓜品种为试验对象,研究了萌芽期及苗期主要生长指标对NaCl胁迫的响应情况,同时探讨了萌芽期盐处理对典型耐盐黄瓜品种在苗期盐害耐受性的影响。结果表明:萌芽期120 mmol/L NaCl溶液处理显著抑制了黄瓜的平均胚根长,对发芽率的影响较小,但不同黄瓜品种间的发芽率存在显著差异;50 mmol/L NaCl溶液处理对苗期黄瓜的平均根长、茎长、茎粗、植株鲜质量等各项指标均有显著抑制。结合萌芽期相对盐害率和苗期盐害指数,鉴定出耐盐黄瓜品种为申青1号、至尊187;盐敏感品种为津优1号、津优35、碧玉,苗期的盐害指数均大于80.00%。萌芽期盐处理后移栽的耐盐黄瓜申青1号幼苗在苗期盐处理条件下的7天存活率为0,极显著低于萌芽期未经盐胁迫处理的77.78%,表明培育壮苗对提高盐渍化土壤中黄瓜幼苗的存活率具有重要的意义。In order to clarify the differences in tolerance to NaCl stress among different cucumber varieties during the germination and seedling stages,24 common cucumber varieties are used as experimental subjects to study the response of main growth indicators during the germination and seedling stages to NaCl stress.At the same time,the effect of salt treatment during the germination stage on the salt tolerance of typical salt tolerant cucumber varieties during the seedling stage is explored.The results show that treatment with 120 mmol/L NaCl solution during the germination stage significantly inhibited the average radicle length of cucumber,with little effect on germination rate.However,there are significant differences in germination rate among different cucumber varieties.The treatment with 50 mmol/L NaCl solution significantly inhibited various indicators such as average root length,stem length,stem thickness,and fresh plant weight of cucumber seedlings.Based on the relative salt damage rate during the germination stage and the salt damage index during the seedling stage,salt tolerant cucumber varieties are identified as Shenqing 1 and Zhizun 187.The salt sensitive varieties are Jinyou 1,Jinyou 35,and Biyu,and the salt damage index during the seedling stage is all greater than 80.00%.Under salt treatment condition during the seedling stage,the 7-day survival rate of salt tolerant cucumber Shenqing 1 seedlings transplanted after salt treatment during the germination stage is 0,which is significantly lower than the 77.78%without salt stress treatment during the germination stage.The result indicates that cultivating strong seedlings is of great significance in improving the survival rate of cucumber seedlings in saline soil.

关 键 词：黄瓜 盐胁迫 耐盐性 品种鉴定 

分 类 号：S642.2[农业科学—蔬菜学]