高丹草杂交种灰色关联分析与评判  

The Grey Relation Analysis and Evaluation of Hybrid Pacesetter

作　　者：尹利[1] 逯晓萍[1] 傅晓峰[2] 李美娜[1] 郭建[1] 

机构地区：[1]内蒙古农业大学农学院,内蒙古呼和浩特010019 [2]内蒙古农牧业科学院,内蒙古呼和浩特010030

出　　处：《中国草地学报》2006年第3期21-25,43,共6页Chinese Journal of Grassland

基　　金：内蒙古自然科学基金资助项目(200208020301)

摘　　要：应用灰色系统理论关联度法对一年生新型饲用作物高丹草(高粱×苏丹草)杂交种的单株鲜重及其它主要农艺性状进行了分析,而且还对高丹草的6个杂交种进行了灰色评判。结果表明:不同杂交组合的同一性状与单株鲜重的关联度不同,同一组合内的不同性状与单株鲜重的关联度也不同,其关联度顺序为:茎粗(r=0.809)>分蘖数(r=0.789)>叶/茎(r=0.752)>叶宽(r=0.725),叶长(r=0.725)>穗长(r=0.694)>叶片数(r=0.639)>小穗数(r=0.638)>株高(r=0.632)>生育期(r=0.607);在6个杂交组合中,皖草2号和2003-GB为较好的饲用作物组合,其余4个为一般组合,在高丹草生产中可推广皖草2号和2003-GB。By using the method of relational grade of the gray systemic theory , the fresh weight of sitagle plant and other major agronomic characters of the annual new forage hybrids Pacesetter （sorghum）〈 sudangrass） were analyzed and six hybrids of Pacesetter were evaluated. The result showed that the same character of different hybrid combinations had a different correction degree with the fresh weight of single plants the different characters of the same hybrid combination had a different correction degree with the fresh weight of single plant. The order of grey correlation degree was： diameter of stem （r=0. 809） 〉 tiller number （r=0. 789）〉 stem-leaves ratio （r=0. 752）〉 leaf width （r=0. 725）, leaf length （r= 0.725） 〉 ear length （r=0. 694） 〉 leaf number （r=0. 639） 〉 spike number （r=0. 638） 2〉 plant height （r=0. 632）〉 growth period （r=0. 607）. Wan--grass No. 2 and 2003--GB were both better forage com- binations in six hybrids of Pacesetter （sorghum × sudangrass） , the rest of them were common combinations. So Wan-grass No. 2 and 2003-GB should be extended in the Pacesetter （sorghum× sudangrass） production.

关 键 词：高丹草 农艺性状 灰色关联分析与评判 

分 类 号：S542[农业科学—作物学]