超高产粳稻品种抗倒伏性的初步研究  

Initial Research on Lodging Resistance in Super High-Yielding Japonica Rice Cultivars

作　　者：李红娇[1] 张喜娟[1] 李伟娟[1] 徐正进[1] 

机构地区：[1]辽宁省北方粳稻育种重点实验室沈阳农业大学水稻研究所,沈阳110161

出　　处：《北方水稻》2008年第2期24-27,共4页North Rice

基　　金：国家自然科学基金项目(30370866);教育部博士学科点专项科研基金项目(20050157001)

摘　　要：以沈阳农业大学水稻研究所培育的超高产粳稻品种为材料,研究了超高产粳稻品种的抗倒伏能力及与倒伏密切相关的各性状指标。结果表明:齐穗后30 d左右是水稻最容易发生倒伏的时期,株高与水稻倒伏指数呈极显著正相关,茎秆基部伸长节间性状与倒伏关系密切,茎秆维管束数目、厚壁细胞层数、淀粉和可溶性糖含量均对倒伏有一定影响。超高产粳稻品种沈农265和沈农9741与常规粳稻品种辽粳294和辽粳371相比,表现出较好的抗倒性能。Using super high-yielding japonica rice cuhivars which were bred in Rice Institute of Shenyang Agricultural University ＂as materials, the lodging resistance ability and characteristics related to lodging were studied. The results showed that about 30 days after heading is the particular stage when the lodging occurs easily. There was a significant positive correlation between height of culm and lodging index. The characteristics of basal elongating internodes had closely relation to lodging resistance. The number of vascular bundle and thick wall cell layers, starch and solubility sugar content in culm all had influence with lodging resistance., Lodging resistance ability of super high-yielding japonica rice cultivars Shennong 265 and Shennong 9741 were better than that of conventional japonica rice varieties Liaojing 294 and Liaojing 371.

关 键 词：超高产粳稻 抗折力 弯曲力矩 倒伏指数 

分 类 号：S-3[农业科学]