Articles
COMBINING ABILITY STUDY IN WAXY CORN (ZEA MAYS VAR. CERITINA) INBRED LINES
Article number
769_20
Pages
151 – 156
Language
English
Abstract
The objectives of this study were to determine the combining ability (GCA and SCA) and to identify a better combiner for developing new waxy corn hybrids.
Eight inbred lines, 4 males (line no. 241, 246, 303 and 5101) and 4 females (line no. 207, 209, 216 and 513) were used to estimate general combining ability (GCA) and specific combining ability (SCA). The sixteen hybrids were produced using the NC mating design II. These hybrids with 3 checks were tested using RCBD with 3 replications in the cool season (December 2004- February 2005) and the rainy season (May- July 2005) at the Faculty of Agriculture, Khon Kaen University, in Thailand.
Results show that 4 inbred lines, 241, 303, 513 and 216, had positive GCA values for yield and eating quality.
In addition, the hybrids developed from these inbred lines, 513 × 241, 216 × 241 and 513 × 303, also had high and positive SCA value for yield.
Therefore, those inbred lines suitable to be used as male parents were 241 and 303 and those as female parents were 216 and 513.
Eight inbred lines, 4 males (line no. 241, 246, 303 and 5101) and 4 females (line no. 207, 209, 216 and 513) were used to estimate general combining ability (GCA) and specific combining ability (SCA). The sixteen hybrids were produced using the NC mating design II. These hybrids with 3 checks were tested using RCBD with 3 replications in the cool season (December 2004- February 2005) and the rainy season (May- July 2005) at the Faculty of Agriculture, Khon Kaen University, in Thailand.
Results show that 4 inbred lines, 241, 303, 513 and 216, had positive GCA values for yield and eating quality.
In addition, the hybrids developed from these inbred lines, 513 × 241, 216 × 241 and 513 × 303, also had high and positive SCA value for yield.
Therefore, those inbred lines suitable to be used as male parents were 241 and 303 and those as female parents were 216 and 513.
Authors
N. Thongnarin, K. Lertrat, S. Taeshawongsatein
Keywords
breeding, glutinous corn, identification, parental lines
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