期刊
BIOCHEMICAL GENETICS
卷 39, 期 5-6, 页码 179-200出版社
KLUWER ACADEMIC/PLENUM PUBL
DOI: 10.1023/A:1010293325482
关键词
correlation; genetic distance; hybrid performance; heterosis; rice
Two Cytoplasmic Male Sterile lines were crossed with fourteen restorer lines of rice widely grown in the western regions of Maharashtra, India, to produce 28 F-1 hybrids which were evaluated for eight agronomically important traits, contributing to yield potential, in replicated field trials. The hybrid performance was recorded along with heterosis and heterobeltiosis. All the rice lines under investigation were subjected to marker-based variability analysis. An attempt was made to correlate genetic distance based on specific markers for each trait individually, as well as average genetic distance based on all specific markers, with hybrid performance and heterosis, by, regression analysis. Specific markers could cluster the parental lines in different groups and showed significant correlation with hybrid performance. The data also supports the proposition that epistasis is the basis of heterosis. The analysis, however revealed a lack of significant predictive values for field application.
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