Genetic analysis of plant regeneration in rice (Oryza sativa L.) |
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Authors: | Jianying Peng Thomas K. Hodges |
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Affiliation: | (1) Department of Botany and Plant Pathology, Purdue University, 47907 West Lafayette, Indiana |
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Abstract: | Summary A diallel study involving reciprocal crosses of four genotypes (IR8, 36, 54, and 64) was carried out to understand the genetic mechanism of plant regeneration from immature embryo-calli in rice. Regeneration frequency (% of calli that produced plants) varied from a high of 86% for IR54 to a low of 0% for IR36, while regenerated plants per embryo numbered from 0 to 7 when these same IR lines and the F1 hybrids were compared. Combining ability analysis revealed that both nuclear (with both additive and dominant effects) and cytoplasmic genes are important in controlling regeneration in rice. Parental lines and F1 hybrids with high ability to regenerate were identified. |
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Keywords: | rice regeneration diallel analysis combining ability |
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