Journal
BREEDING SCIENCE
Volume 68, Issue 2, Pages 145-158Publisher
JAPANESE SOC BREEDING
DOI: 10.1270/jsbbs.17155
Keywords
heterosis; hybrid vigor; epigenetics; non-additive gene expression
Categories
Funding
- JSPS Bilateral Joint Research Projects [14544567, 24113509, 15H05614]
- PREST [JPMJPR12B8]
- Grants-in-Aid for Scientific Research [15H05614, 24113509] Funding Source: KAKEN
Ask authors/readers for more resources
Heterosis or hybrid vigor is a phenomenon where hybrid progeny have superior performance compared to their parental inbred lines. This is important in the use of F-1 hybrid cultivars in many crops and vegetables. However, the molecular mechanism of heterosis is not clearly understood. Gene interactions between the two genomes such as dominance, overdominance, and epistasis have been suggested to explain the increased biomass and yield. Genetic analyses of F-1 hybrids in maize, rice, and canola have defined a large number of quantitative trait loci, which may contribute to heterosis. Recent molecular analyses of transcriptomes together with reference to the epigenome of the parents and hybrids have begun to uncover new facts about the generation of heterosis. These include the identification of gene expression changes in hybrids, which may be important for heterosis, the role of epigenetic processes in heterosis, and the development of stable high yielding lines.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available