高油玉米自交系产量性状的配合力及聚类分析  

Combining Ability and Cluster Analysis on Yield Characters of High Oil Corn Inbred Lines

作　　者：张洋[1] 姜海鹰[2] 刘明[1] 张宝石[1] 

机构地区：[1]沈阳农业大学农学院,沈阳110161 [2]中国农业大学,北京100094

出　　处：《玉米科学》2006年第3期25-29,共5页Journal of Maize Sciences

基　　金：国家自然科学基金(30170564)

摘　　要：以分属Lancaster、Reid、塘四平头、旅大红骨和外引种质群这5个杂种优势群的代表性自交系Mo17、7922、K12、丹340和8701为测验种,以来自于BHO、ALEXHO、RYDHO、SYNDO4个高油群体的20个自交系为被测系,利用NCⅡ设计,分析了4个产量性状的配合力,并对高油玉米自交系进行了聚类分析。结果表明,BHO和SYNDO群体的自交系具有较高的产量一般配合力,并且这两个群体的高油自交系与普通玉米自交系之间的特殊配合力均较高。因此,利用这两个群体的自交系作亲本较容易组配出高产组合。BHO和SYNDO群体的自交系是杂种优势利用最高的高油自交系。20个高油自交系可分为4个杂种优势群,第一群包括BY4846、RY697、GY462、SY1077、GY923、GY798、RY2830;第二群包括BY815、BY843、SY3073;第三群包括BY807、BY832、SY1039、RY740、RY783;第四群包括GY220、GY302、RY2846、SY1032、SY2985。The primary objective of this study was to estimate heterotic groups and heterotic pattern of a set of 20 newly elite high oil corn inbred lines from four high oil corn populations named BHO（Beijing high Oil）, ALEXHO（Alexander High Oil）, RYDHO（Reid Yellow Dent High Oil） and SYN DO（Synthetic Diseased Oil）. Five normal corn inbred lines Dan340, Mo17, 7922, 8701, K12 were taken as testers, which were the typical representatives of five main heterotic groups named Lvda Red Cob, Lancaster, Reid, Exotic germplasm and Tangsipingtou in China. 100 crosses from NC Ⅱ design were grown in a randomized complete-block design experiment. The GCAs and SCAs of 4 yield characters were analyzed, and the 20 high oil inbreds were clustered using SCAs. The results showed that the inbred lines of BHO and SYN DO groups had the greatest GCA and SCA, these inbred lines can be used to produce high yield crosses. The 20 high oil inbred lines were divided into 4 heterotic groups, BY4846, RY697, GY462, SY1077, GY923, GY798, RY2830 could be taken as the first group; BY815, BY843, SY3073 could be taken as the second group; BY807, BY832, SY1039, RY740, RY783 could be taken as the third group; GY220, GY302, RY2846, SY1032, SY2985 could be taken as the fourth group.

关 键 词：高油玉米 自交系 配合力 聚类分析 

分 类 号：S513.032[农业科学—作物学]