水分胁迫对粳型巨胚稻发芽与出苗的影响  

Effects of Water Stress on Germination and Emergence of Japonica Giant Embryo Rice

作　　者：向丽君[1] 戴红燕[1] 杨正菊[1] 李一玉[1] 肖洪科[1] 刘东强[1] 李青[1] 

机构地区：[1]西昌学院,四川西昌615013

出　　处：《西昌学院学报（自然科学版）》2010年第2期8-11,共4页Journal of Xichang University(Natural Science Edition)

基　　金：西昌学院大学生课外科研项目"水分胁迫对粳型巨胚稻发芽与出苗的影响"

摘　　要：用粳型巨胚稻西巨胚1号和合系22-2(小胚)为试验材料,用不同质量浓度的PEG—6000(聚乙二醇)溶液对种子进行不同的处理,试验结果表明:西巨胚1号的发芽势、发芽率、发芽指数都不及合系22-2;先用清水浸种24h后再用PEG溶液浸润会抑制西巨胚1号的萌发,且发芽率随浓度的增加而下降;用不同浓度的PEG溶液浸泡种子24h后再用清水培养对种子的发芽和出苗有促进作用,但以浓度为5%的PEG溶液浸种对西巨胚一号的促进作用最大。Effects of seed treatment by different concentration of PEG-6000（polyethylene glycol）in Japonica Xi-giant embryo-1 and japonica rice Hexi-22-2（with small embryo）were studied. The results indicated that the germination energy,seed germination rate and germination index were lower than that of Hexi-22-2. The germination of Japonica Xi-giant embryo-1 to be suppressed by the PEG treatment after 24 hours water seed soaking,and the seed germination rate decreased with increasing concentration of PEG. The treatment that water culture after 24 hours seed soaking with different concentration PEG water can promote germination and emergence ability of rice,but the PEG seed soaking with 5% concentration had the greatest effect on promoting germination and emergence ability of Japonica giant embryo rice

关 键 词：水分胁迫 PEG(聚乙二醇) 粳型巨胚稻 发芽 出苗 

分 类 号：S511.22[农业科学—作物学]