摘要
研究芝麻种子萌发对盐胁迫的响应,可以为耐盐芝麻品种选育和盐碱地开发利用提供一定的参考价值。以漯河市农业科学院选育的漯芝系列3个芝麻品种(系)(漯芝22号、漯芝66和漯芝88)为试验材料,利用NaCl溶液模拟盐胁迫,NaCl溶液浓度设0 (蒸馏水,CK)、50、100、150、200和250 mmol/L计6个处理,采用培养皿滤纸培养法进行发芽试验,分析不同浓度盐胁迫处理下芝麻种子萌发参数的变化。结果表明:随着盐胁迫浓度的增大,漯芝22号和漯芝88的发芽势、发芽率和发芽指数均总体呈逐渐降低趋势,不同浓度的盐胁迫均会抑制其种子萌发;漯芝66的发芽势、发芽率和发芽指数均呈先升高后降低的变化,其中低浓度(50、100 mmol/L)盐胁迫时表现为促进作用。漯芝66的根长、芽长和鲜重生长受盐胁迫抑制程度相对最小。在低盐条件下,更适宜漯芝66种子萌发,为芝麻耐盐品种推广及选育提供材料。
Studying the response of sesame seed germination to salt stress can provide certain reference value for the breeding of salt tolerant sesame varieties and the development and utilization of saline alkali land.Three sesame varieties(Luozhi 22,Luozhi 66,and Luozhi 88)selected by the Luohe Academy of Agricultural Sciences were used as experimental materials to simulate salt stress using NaCl solution.The NaCl solution concentration was set to 0(distilled water,CK),50,100,150,200,and 250 mmol/L for six treatments.Germination experiments were conducted using filter paper culture in culture dishes to analyze the changes in sesame seed germination parameters under different concentrations of salt stress treatment.The results showed that with the increase of salt stress concentration,the germination potential,germination rate,and germination index of Luozhi 22 and Luozhi 88 all showed a gradually decreasing trend,and different concentrations of salt stress would inhibit their seed germination.The germination potential,germination rate,and germination index of Luozhi 66 showed an initial increase followed by a decrease,with a promoting effect observed under low concentrations(50,100 mmol/L)of salt stress.The root length,shoot length,and fresh weight growth of Luozhi 66 were relatively least inhibited by salt stress.Under low salt conditions,Luozhi 66 are more suitable for germination,providing material for the promotion and breeding of salt tolerant sesame variety.
作者
刘美茹
吴鹤敏
张仙美
张权
郑磊
卫松山
戴晋
LIU Mei-ru;WU He-min;ZHANG Xian-mei;ZHANG Quan;ZHENG Lei;WEI Song-shan;DAI Jin(Luohe Academy of Agricultural Sciences,Luohe 462000,China)
出处
《河北农业科学》
2025年第2期52-57,共6页
Journal of Hebei Agricultural Sciences
基金
国家特色油料产业技术体系项目(CARS-14-2-18)
中原科技创新领军人才项目(224200510021)
河南省重大科技专项“优质专用适合机械化种植的芝麻新品种选育与示范”(201300110600)。
关键词
芝麻
种子
盐胁迫
萌发参数
Sesame
Seed
Salt stress
Germination parameters
作者简介
刘美茹(1989-),女,河南漯河人,助理研究员,硕士,主要从事芝麻遗传育种及栽培研究。E-mail:liumr1224@163.com;通信作者:张仙美(1966-),女,河南漯河人,研究员,主要从事芝麻遗传育种及栽培研究。E-mail:lheseame@163.com。
