摘要
选择不同耐冷玉米种质8份,按GriffingⅡ的设计组配,对自交系的主要农艺性状进行配合力分析。结果表明:株高、穗位高、叶片数、穗长、行粒数、单株产量、2粒宽、容重8个性状的一般配合力(GCA)、特殊配合力(SCA)方差极显著。HR6×2001-F32、FR1454×2001-F32、Mo17×FR1454、HR6×HR295组合具有较高产量;依据产量SCA的效应值聚类,发现耐冷自交系分属不同类群,因此通过有效的改良方法可以提高玉米种质的耐冷性。
Eight different cold-resistant inbred lines that were chosen to analyze the combining ability of main agronomy characters on inbred lines, according to Griffing Ⅱ design. The results showed that GCA and SCA variance of plant height, ear height, leaf numbers, ear length, kernels per row, yield per plant, 2 kernels width and volume weight were extremely significant. The combinations of HR6 × 2001-F32, FR1454 × 2001-F32, Mo17 × FR1454 and HR6 × HR295 had high yield; Cluster analysis according to the yield of SCA indicated cold-resistant inbred lines belonged to different germplasm groups, so the cold-resistant maize germplasm could be improved through methods of effective improvement.
出处
《玉米科学》
CAS
CSCD
北大核心
2009年第3期37-41,共5页
Journal of Maize Sciences
关键词
玉米
耐冷性
农艺性状
配合力分析
聚类分析
Maize
Cold resistance
Agronomy characters
Combining ability
Cluster analysis
