外源物质浸种对NaCl胁迫下大叶榉树种子萌发的影响  

Effects of Exogenous Substances Soaking on Seed Germination of Zelkova schneideriana under NaCl Stress

作　　者：董静[1] 邢锦城[1] 赵宝泉[1] 温祝桂[1] 王进左 李玉明 DONG Jing;XING Jincheng;ZHAO Baoquan;WEN Zhugui;WANG Jinzuo;LI Yuming(Institute of Agricultural Sciences in Jiangsu Coastal Areas,Yancheng Jiangsu 224002;Jingshun Horticultural Crop Specialized Cooperative of Binhai County,Binhai Jiangsu 224500;Funing Branch of Qianlyu Seedling Tree and Flowers Co.,Ltd.of Jiangsu Province,Funing Jiangsu 224400)

机构地区：[1]江苏沿海地区农业科学研究所,江苏盐城224002 [2]滨海县经顺园艺作物专业合作社,江苏滨海224500 [3]江苏千绿苗木花卉有限公司阜宁分公司,江苏阜宁224400

出　　处：《现代农业科技》2021年第9期125-127,131,共4页Modern Agricultural Science and Technology

基　　金：苏北科技专项(SZ-YC2018060,SZ-YC2018059,SZ-YC2019029)。

摘　　要：利用不同浓度的氯化钙(CaCl_(2))、5-氨基乙酰丙酸(ALA)及亚精胺(Spd)对大叶榉树种子进行浸泡,分析150 mmol/L NaCl胁迫下大叶榉树种子的发芽率、发芽势及发芽指数,找出提高大叶榉树种子发芽率的最佳浓度配比。结果表明:150 mmol/L NaCl胁迫下,大叶榉树种子的各项发芽指标均显著下降;适宜浓度的外源物质浸种处理均可显著提高大叶榉树种子的发芽率及发芽势,CaCl_(2)、ALA和Spd的最适浸种浓度分别为20.0 mmol/L、20.0 mg/L和2.5 mmol/L;采用20.0 mmol/L CaCl_(2)、20.0 mg/L ALA和5.0 mmol/L Spd混合浸种,大叶榉树种子萌发效果最好,显著优于各单剂处理。The seeds of Zelkova schneideriana were soaked with different concentrations of calcium chloride(CaCl_(2)),5-aminolevulinic acid(ALA)and spermidine(Spd),so as to analyze the germination rate,germination potential and germination index of Z.schneideriana seeds under the stress of 150 mmol/L NaCl,and find out the best concentration ratio to improve the germination rate of Z.schneideriana seeds.The results showed that under 150 mmol/L NaCl stress,the germinating indexes of Z.schneideriana seeds decreased significantly.The germination rate and germination energy of Z.schneideriana seeds were significantly increased by soaking the seeds with appropriate concentrations of exogenous substances.The optimal soaking concentrations of CaCl_(2),ALA and Spd were 20.0 mmol/L,20.0 mg/L and 2.5 mmol/L,respectively.When the Z.schneideriana seeds were soaked with mixed solution of 20.0 mmol/L CaCl_(2),20.0 mg/L ALA and 5.0 mmol/L Spd,the germination effect of Z.schneideriana seeds was the best,which was significantly better than that of each single treatment.

关 键 词：大叶榉树 盐胁迫 种子萌发 氯化钙 5-氨基乙酰丙酸 亚精胺 

分 类 号：Q945.78[生物学—植物学]