Title: Analysis on the Combining Ability of Main Agronomic Traits of Indica Double-functional Genic Male-sterile Lines
Abstract: Six indica double-functional genie male-sterile lines and 6 early or middle maturing varieties and wide compatibility strains were used to make 36 F_1 hybrids following incomplele dialleI crosses. These hybrids were evaluated under the same conditions. The hcterosis and combining ability of 9 main agronomic traits were analysed. There were significant differences in combining abilities among the genic male—sterile lines and positive correlation(significant at 0.01 level) between the value of GCA and standard heterosis of hybrids. The higher GCA in parents, the stronger standard heterosis of hybrids. It should be difficult to use the genic male-sterile line with lower GCA in hybrid production even though they have higher SCA. 3130S and Hengnong S-1 were the best general combiners. Authors agreed that GCA of genic male—sterile lines were concerned with their relatives. To use japonica/indica or cultural rice/wild rice may be an efficient method for selecting double-functional genie male-sterile lines with higher combining ability.
Publication Year: 1993
Publication Date: 1993-01-01
Language: en
Type: article
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Cited By Count: 2
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