浸种剂和回干时间对草地早熟禾萌发期耐盐性影响  

Influence of Seed Soaking Agents and Dehydration Time on the Seed Germination of Poa pratensis

作　　者：张莹[1] 宋书红[1] 王红俊[1] 陈志飞[1] 张晓娜[1] 熊碧涵 杨云贵[1] 

机构地区：[1]西北农林科技大学动物科技学院,陕西杨凌712100

出　　处：《草地学报》2017年第1期199-203,共5页Acta Agrestia Sinica

基　　金：国家牧草产业技术体系"优质牧草产品标准化生产关键技术"(CARS-35-01A);国家燕麦产业技术体系"燕麦加工利用"(CARS-08-D1)资助

摘　　要：试验选用4种浸种剂:水、0.5mmol·L^(-1)水杨酸、2.0%硝酸钾溶液、2.0%硝酸钙溶液,分别对草地早熟禾品种优异(Poa pretensis‘Merit’)进行100mmol·L^(-1) NaCl盐胁迫下不同时间的浸种-回干处理。对幼苗鲜重等相关指标进行测定,结果表明浸种-回干对提高草地早熟禾耐盐性强弱依次为:2.0%硝酸钙溶液浸种回干8h、2.0%硝酸钾溶液浸种回干8h、0.5mmol·L^(-1)水杨酸浸种回干8h。Four soaking agents were chosen： H20 , 0. 5 mmol. L-1 Salicylic acid （SA）, 2. 0%KNO3, 2.0%Ca（NO3）2 Different soaking-dehydration combination treatments were applied to the seeds of Kentucky bluegrass cultivar ‘Merit＇. The treated seeds were geminated under salt stress （100 mmol · L-1 NaC1）. Fresh weight and related indicators were measured and the results showed that soaking agent and dehydration time affected salt tolerance of Kentucky bluegrass. And the order of the effect was： 2.0% Ca（NOa）2 soaking-8 h dehydration, 2.0%KNO3 soaking-8 h dehydration and then 0.5 mmol· L -1 SA soa- king-8 h dehydration.

关 键 词：草地早熟禾 浸种剂 回干时间 种子发芽 耐盐性 

分 类 号：S543.9[农业科学—作物学]