水稻穗上芽发生的生理变化初步研究  

Studies on the Physiological Changes of Preharvest Sprouting in Rice

作　　者：周述波[1,2] 林伟[1] 贺立静[1] 萧浪涛[2] 张雪芹[2] 

机构地区：[1]琼州学院生物科学与技术学院,海南三亚572022 [2]湖南农业大学植物激素与生长发育重点实验室,湖南长沙410128

出　　处：《杂交水稻》2011年第4期68-71,共4页Hybrid Rice

基　　金：教育部青年骨干教师基金项目[2000(65)];三亚校地合作科研项目(YD201027)

摘　　要：以亲本V20B(易穗上发芽)和金23B(不易穗上发芽)为材料,研究了水稻籽粒在田间穗上发芽的生理基础。结果表明:在相同试验条件下,V20B比金23B更易穗上发芽;V20B穗萌前内源激素GA3/ABA含量比值高于金23B,而ABA含量低于金23B;籽粒发育过程中的α-淀粉酶活性、籽粒含水量均高于金23B。Hybrid rice parental lines V20B（an easily-sprouting line） and Jin 23B（a hardly-sprouting line） were used as the experimental materials to study the physiological basis of preharvest sprouting of rice grains.The results showed that V20B was easier to sprout than Jin 23B,and the easily-sprouting V20B had a greater ratio of the content in grains of GA3 to ABA and a lower ABA content in grains before preharvest sprouting.In addition,in the grain development V20B had a higher α-amylase activity and a higher water content in grains than Jin 23B.

关 键 词：水稻 穗上发芽 内源激素 Α-淀粉酶活性 

分 类 号：S511.01[农业科学—作物学] S311