外源SA浸种对Ca(NO_3)_2胁迫下黄瓜种子萌发的影响  

Effects of Exogenous Salicylic Acid on Seed Germination of Cucumber Under Ca(NO_3)_2 Stress

作　　者：孙彤彤 武春成[1] 宋士清[1] SUN Tong-tong;WU Chun-cheng;SONG Shi-qing(Hebei Normal University of Science and Technology,Qinhuangdao 066000,China)

机构地区：[1]河北科技师范学院,河北秦皇岛066000

出　　处：《黑龙江农业科学》2018年第11期5-9,共5页Heilongjiang Agricultural Sciences

基　　金：河北省自然基金资助项目(C2016407101);河北省科技计划资助项目(16236901D-03);河北省现代农业产业技术体系资助项目(HBCT2018030209)

摘　　要：为研究外源SA浸种对Ca(NO_3)_2胁迫下黄瓜种子萌发的影响,以黄瓜绿岛7号为试验材料,首先分别进行0、60、80、100、120、140、160mg·L^(-1)SA浸种和0、100、120、140、160、180mmol·L^(-1) Ca(NO_3)_2胁迫两个预试验,比较种子发芽势、发芽率、发芽指数和活力指数后选择用80mg·L^(-1)的SA浸种,测定120mmol·L^(-1)Ca(NO_3)_2胁迫下黄瓜种子发芽势、发芽率、发芽指数、活力指数、ɑ-淀粉酶活性等指标。结果表明:SA浸种显著提高了Ca(NO_3)_2胁迫下黄瓜种子的发芽势、发芽率、发芽指数、活力指数和ɑ-淀粉酶活性,分别提高了10.72%、6.67%、10.15%、71.70%和120.56%。说明SA浸种对Ca(NO_3)_2逆境胁迫下黄瓜种子萌发有明显的促进作用和缓解伤害的作用。In order to study the effects of exogenous salicylic acid on seed germination of cucumber under Ca（NO 3 ） 2 stress.Cucumber varietie ‘Green Island No.7’was used as the test material.Two preparatory experiments,soaking seeds with 0,60,80,100,120,140,160 mg ·L -1 SA and stressing with 0,100,120,140,160,180 mmol ·L -1 Ca（NO 3 ） 2 respectively,to determining germination potential,germination rate,germination index and vigor index were carried out.Finally,80 mg ·L -1 SA was used to soak seeds .Germination potential,germination percentage,germination index,vigor index and ɑ-amylase activity of cucumber seeds were determined under 120 mmol ·L -1 Ca（NO 3 ） 2 stress.The results showed that SA soaking significantly increased germination potential,germination rate,germination index,vigor index and α-amylase activity of cucumber seeds under Ca（NO 3） 2 stress by 10.72%,6.67%,10.15%,71.70% and 120.56% respectively.Indicating that SA soaking could promote the germination of cucumber seeds and alleviate the injury of cucumber seeds under the stress of Ca（NO 3 ） 2 .

关 键 词：水杨酸 CA(NO3)2 胁迫 黄瓜 种子 

分 类 号：S642.2[农业科学—蔬菜学]