21个苜蓿品种主要农艺性状关联分析与综合评价  

Correlation analysis of the main agronomic traits and performance of 21 alfalfa varieties

作　　者：伏兵哲[1] 高雪芹[2] 高永发[1] 李东宁 张龙 张蓉[4] 

机构地区：[1]宁夏大学农学院草业科学研究所,宁夏银川750021 [2]宁夏大学科学技术处,宁夏银川750021 [3]宁夏农垦茂盛草业有限公司,宁夏银川750023 [4]宁夏农林科学院植物保护研究所,宁夏银川750001

出　　处：《草业学报》2015年第11期174-182,共9页Acta Prataculturae Sinica

基　　金：宁夏高等学校科学技术研究项目(NGY2014059);国家牧草产业体系盐池综合试验站(CARS-35-42);"十二五"国家科技支撑计划(2011BAD17B05)资助

摘　　要：为了明确苜蓿主要农艺性状与产量关系以及不同品种资源的生产特性,应用相关和灰色关联度对国内外21个苜蓿品种的主要农艺性状进行了关联性分析和生产性能综合评价。结果表明:生长速度,株高和鲜干比与干草产量的相关系数分别为0.87,0.86和0.55,存在极显著相关(P<0.01),同时灰色关联度较大,分别为0.8360,0.8330和0.7716,故这3个性状与干草产量之间有较大的关联性;单位面积植株数、一级分枝数和二级分枝数与干草产量不存在显著相关(P>0.05),且灰色关联度较小,分别为0.5921,0.6267和0.7406,与干草产量之间的关联性相对较小。通过最优关联度综合评价,甘农5号、金皇后、WL363HQ、WL319HQ和三得利与标准品种的关联度较大,在宁夏灌区生产性能表现较好;而敖汉、草原3号和甘农2号与标准品种的关联度较小,生产性能表现较差。Relationships between the major agronomic traits and production performance of 21 alfalfa varieties have been studied using correlation and grey correlation degree analysis.The results showed that alfalfa hay yields were significantly correlated with growth rate,plant height and the fresh-dry ratio (P <0.01).The cor-relation coefficients were 0.87,0.86 and 0.55 respectively.The grey correlation coefficients were 0.8360, 0.8330 and 0.7716 respectively.Hay yields were not significantly correlated with either plant number or branch number (P >0.05).The grey correlation coefficient was 0.5921,0.6267 and 0.7406 respectively.The production performances of the 21 alfalfa varieties were evaluated using the method of optimal correlation de-gree.The production performance of Gannong No.5,Golden Queen,WL363HQ,WL319HQ and Sandeli were superior to the other varieties.The Aohan,Caoyuan No.3 and Gannong No.2 varieties were the poorest per-formers in the Ningxia irrigation area.

关 键 词：苜蓿 农艺性状 生产性能 灰色关联分析 综合评价 

分 类 号：S541.9[农业科学—作物学]