Mn^(2+)超标水质对草坪种子萌发的影响  

The Effect of Excess Mn^(2+) on the Germination of Lawn Grass Seed

作　　者：刘海山[1] 李凤玉[1] 李敏[1] 许旭萍[1] 

机构地区：[1]福建师范大学生命科学学院,福建福州350108

出　　处：《福建师范大学学报（自然科学版）》2009年第1期115-119,共5页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省自然科学基金资助项目(B0510007);福建省教育厅基金资助项目(JB06109JB08041)

摘　　要：以南方常见的4种绿化草种(高羊茅、百喜草、狗牙根和结缕草)为材料,进行Mn2+胁迫种子萌发实验.结果表明:高羊茅种子具有较高的发芽率,可以作为城市绿化优选草种,Mn2+胁迫质量浓度在25～75 mg·L-1范围内对高羊茅的发芽率、发芽势等有促进作用,超过该范围则抑制高羊茅种子萌发;狗牙根种子受Mn2+胁迫影响最小,发芽势和发芽指数较高,可作为快速成苗和高质量浓度Mn2+环境中播种的种子材料.The germination tests of Mn^2＋ stress on lawn grass seeds were taken on four kinds of southern common grass species （Festuca arundinacea, Paspalurn notaturn, Cynodon dactylon, Zoysia japonica）. The results are as follows： Festuca arundinacea seed with germination of high percentage can be used as optimized lawn grass in town, and in the range of 25 -75 mg · L^-1, Mn^2＋ enhances the percentage of germination and the germinative energy, but they are suppressed as the the concentration of Mn^2＋ is higher. The germinative energy and germination index of Cynodon dactylon are higher, and the effect of Mn^2＋ stress on the seed germination is very small. So the seed of Cynodon dactylon is suitable for using in lawn grass in the earth with much higher concentration of Mn^2＋.

关 键 词：Mn^2+胁迫 草坪种子 萌发 

分 类 号：S688.4[农业科学—观赏园艺]