溶氧、pH及其他理化因子对蓖齿眼子菜种子萌发的影响  

EFFECTS OF DISSOLVED OXYGEN,pH AND OTHER PHYSICO-CHEMICAL FACTORS ON THE SEED GERMINATION OF POTAMOGETON PECTINATUS

作　　者：高健[1] 熊勤[1] 李祝[1] 杨劭[1] 陈洪达[2] 

机构地区：[1]华中师范大学生命科学学院,武汉430079 [2]湖北省水产科学研究所,武汉430071

出　　处：《水生生物学报》2006年第5期524-529,共6页Acta Hydrobiologica Sinica

基　　金：国家十五"863"水污染控制重大专项课题资助(课题编号2002AA601013)

摘　　要：研究了溶氧、pH、光强、冷处理、温度、营养以及激素处理等条件对蓖齿眼子菜种子萌发的影响。结果表明:溶氧对种子的最终萌发率有影响,缺氧条件下比正常条件和氧饱和条件下的萌发率高,但缺氧条件下萌发的幼苗为白化苗,不能正常生长发育;光照和pH对种子萌发的影响不显著。4℃冷处理能够使种子萌发时间提前和提高种子的萌发率;在15—27℃之间,提高温度能够加快种子的萌发速度,但温度过高则萌发率降低,在15℃、20℃和27℃下的最终萌发率分别为90.0%、90.0%和56.7%;不同的营养水平对种子萌发影响不显著。生长素NAA(0.1—5.0mg/L)、细胞分裂素6-BA(0.1—5.0mg/L)、赤霉素GA3(0.1—5.0 mg/L)不能加快蓖齿眼子菜种子萌发的速度和提高萌发率。Restoration of aquatic ecosystem in eutrophic lakes relies on restoration of submerged vegetation.Vegetative and sexual reproduction under eutrophic conditions may play important role in the establishment of submerged plant community.Potamogeton pectinatus were widely distributed and abundant in Chinese lakes.In this study the effects of anoxia and other ecological factors,e.g.nutrients,light intensity,temperature,pH,pre-cooling treatment,on the germination of seeds of Potamogeton pectinatus were investigat...

关 键 词：蓖齿眼子菜 种子 萌发 溶氧 PH 

分 类 号：Q945[生物学—植物学]