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《Heilongjiang Agricultural Sciences》 2009-06
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Effect of Four Chemical Medicaments on the Germination and the Seedling Growth of Leymus chinensis

ZHANG Xiao-mei1,PAN Duo-feng2,ZHANG Yue-xue2,WANG Xiao-ping1,SHEN Zhong-bao2,GAO Chao2,WANG Jian-li2,ZHANG Rui-bo2,LI Dao-ming2(1.Harbin Normal University,Harbin,Heilongjiang 150025;2.Pratacultural Science Institute of Heilongjiang Academy of Agricultural Sciences,Harbin,Heilongjiang 150086)  
In this paper,the effect of four medicaments on the seed germination and the seedling growth of two genotypes Leymus chinensis was studied.Four medicaments were PEG,NaOH,IAA and GA3.The result showed that:(1) PEG,GA3 and NaOH increased the seed germination of Leymus chinensis.IAA decreased the seed germination of Leymus chinensis compared with Leymus chinensis that was not treated with medicaments.Among them,the crease quantity of the seed germination of Leymus chinensis treated with GA3 was the highest.It has reached notable lever.(2) The seeds of Leymus chinensis treated with GA3 was the highest in sprout speed.They were 0.345 unit per day and 0.467 unit per day.The peak of the seed germination of Leymus chinensis concentrated on the former 5 to 15 day.(3) Four medicaments accelerated the seedling growth of Leymus chinensis but restrained the development of the root,in which GA3 was the most outstanding in accelerating the seedling growth of Leymus chinensis.The negative effect of NaOH on the seedling growth of Leymus chinensis was the highest.
【Fund】: 国家科技支撑计划项目;; 黑龙江省农业科学院创新工程项目
【CateGory Index】: S543.9
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