不同燕麦品种田间倒伏性状研究  

Comparison of Lodging Resistance among Different Oats(Avena sativa L.)

作　　者：陈有军[1] 周青平[1] 孙建[2] 田莉华[1] 

机构地区：[1]西南民族大学青藏高原研究院,四川成都610041 [2]中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室,北京100101

出　　处：《作物杂志》2016年第5期44-49,共6页Crops

基　　金：中央高校青年基金(2016NZYQN31);四川省重点专项(2015SZ0062)

摘　　要：在青藏高原东缘四川红原高寒地区,分析了燕麦(Avena sativa L.)倒伏与品种、株高、单株干重、茎秆强度、茎粗、第一茎节间长、第一茎节间干重、穗位高及根系条数的关系。结果表明,所测定7个燕麦品种均在孕穗期出现部分倒伏,花期倒伏率最大;燕麦品种抗倒伏能力为林纳>青燕1号>青海444>青引1号>青引2号>青海甜燕麦>青引3号莜麦;其中单株重、第一茎节间干重是影响燕麦倒伏的主要因子(P<0.01),株高和穗位高对燕麦倒伏影响次之(P<0.05)。研究认为在燕麦品种选育过程中,可以适当放宽对株高的限制,重点选育单株干重大、基部第一茎节间干重大的品种。Relationship between lodging resistance of 7 oat varieties and their plant height, plant weight, stem strength, stem diameter, length of the 1 st stem nodes, dry weight of the 1 st stem nodes, ear height and number of roots have been examined and analyzed. Results showed that lodging occurred in all 7 varieties, mostly at florescence. Lodging resistance of 7 varieties appeared Lina 〉 Qingyan No.1 〉 Qinghai 444 〉 Qingyin No.1 〉 Qingyin No.2 〉 Qinghai Sweet Oat 〉 Qingyin No.3 Naked. Plant weight and dry weight of the 1st stem node were critical factors for lodging of oats （P〈0.01）; plant height and ear height also affected lodging of oats （P〈0.05）. It is suggested that plant weight and dry weight of the 1 st stem node should be more focused on during selection of breeding programs, rather than plant height.

关 键 词：燕麦 茎秆特性 抗倒伏 

分 类 号：S54[农业科学—作物学]