摘要
[目的]研究小麦品种的抗倒性能,并进一步提高主推品种的抗倒伏能力,为小麦抗倒伏育种以及品种的推广应用提供参考依据。[方法]以山东省主推的3个品种济麦22、良星66、山农17为试验材料,通过分析其在不同密度条件下茎秆机械强度、茎秆鲜重、重心高度、倒伏指数等与其他茎秆形态性状间的相互关系,评价其抗倒伏能力的相对强弱。[结果]济麦22、良星66均在270万/hm2的密度下取得最高产量,山农17在225万/hm2密度下取得了最高产量;4个时期倒伏指数与3个茎秆性状间的相关程度不一,但是均与机械强度的相关性最大,其中孕穗期3个品种倒伏指数与机械强度均达到极显著负相关,其次为重心高度,与茎秆鲜重的相关性最小;在节间长度方面,3个品种倒伏指数均与倒2节间长度显著相关,山农17、良星66还与倒1节间长度显著相关;在相同密度下,蜡熟期的倒伏指数最大,孕穗期倒伏指数最小,开花期的倒伏指数大于乳熟期,相同生育时期下,倒伏指数随着密度的增加而增加。[结论]3个品种的抗倒性能强弱依次为:良星66、济麦22、山农17。
[Objective]The lodging resistance of wheat varieties was studied to further improve the lodging resistance ability of main varieties,and provide some references for the popularization and application of wheat lodging resistance breeding. [Method] Using three wheat varieties Jimai22,Liangxing66,Shannong17 which mainly promoted in Shandong Province as test materials. The relations of G,H,S and lodging index with other stem traits at different densities were analyzed,the strength of its lodging capacity was evaluated. [Result]Jimai22,Liangxing66 obtained the maximum yield under the density of 2. 70 million / hm^2,Shannong17 obtained the maximum yield under the density of 2. 25 million / hm^2. Under the same density,the lodging index was the biggest at the dough stage and smallest at the booting stage. The lodging index at the blossom period was bigger than that at the milk stage,the lodging index increased with the increase of density under the same growth period. [Conclusion]The lodging resistance order of three varieties was Liangxing66,Jimai22,Shannong17.
出处
《安徽农业科学》
CAS
2015年第22期33-35,39,共4页
Journal of Anhui Agricultural Sciences
基金
山东省现代农业产业技术体系小麦创新团队聊城综合试验站资助项目(SDAIT-04-022-17)
关键词
小麦
主推品种
密度
产量
倒伏性状
Wheat
Mainly promoted wheat varieties
Density
Yield
The lodging character
