TY  - BK
AU  - Fan Ximing
AU  - Friesen,D.K.|Palmer,A.F.E.
AU  - Huang Bihua
AU  - Liu Feng
AU  - Tan Jing
ED  - Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) Kenya
ED  - 7. Proceedings of the Eastern and Southern Africa Regional Maize Conference
TI  - Analyses of combining ability and heterotic groups of yellow grain quality protein maize inbreds
SN  - 970-648-120-6
U1  - 338.16 
PY  - 2002///
CY  - Nairobi (Kenya)
PB  - KARI|CIMMYT
KW  - Analysis
KW  - Crop yield
KW  - AGROVOC
KW  - Food crops
KW  - Germplasm
KW  - Heterotis
KW  - Inbred lines
KW  - Maize
KW  - Protein content
KW  - Quality
KW  - Subtropical zones
KW  - Tropical zones
KW  - CIMMYT
KW  - KARI
N2  - Information on the combining ability and heterotic patterns of maize germplasm is of great value to maize breeders. The objective of this study is to determine the heterosis and combining ability of 10 yellow Quality Protein Maize (QPM) inbreds. Among these 10 QPM inbreds, 5 are tropical and subtropical QPM inbreds introduced from CIMMYT, another 5 are from the domestic provinces. These 10 QPM inbreds were used to make up a 10-parent diallel and these 45 crosses were tested in three different environments in Yunnan Province and Guangxi Autonomous region. Highly significant difference was observed among 45 entries and 3 environments for grain yield, while non-significant difference among 3 replications. General combining ability (GCA) was highly significantly different for grain yield, while specific combining ability (SCA) was not significantly different. The highest-yielding cross was CML166 x Qi205 (10,880 kg/ha) and the lowest-yielding cross was Chang631/02 x Zhongxi096/02 (5,496 kg/ha). The highest value of GCA for grain yield is CML161 (1,010.53) and CMLI66 (947.J J), while the lowest value is Zhong x i096/02 (-I,J 19.98). The highest value of SCA f()r grain yield is CML194 x Xin910J/O2 (1,8J3.50) and CMLJ66 x Qi205 (J,272.00), while the lowest value is Xin910J/O2 x Qi205 (-J,670.96). According to the performance of grain yield, these J 0 QPM inbreds could be divided into 4 heterotic groups
ER  -