Genetic analysis of ion-beam induced extremely late heading mutants in rice
Open Access
- 1 January 2014
- journal article
- Published by Japanese Society of Breeding in Breeding Science
- Vol. 64 (3), 222-230
- https://doi.org/10.1270/jsbbs.64.222
Abstract
Two extremely late heading mutants were induced by ion beam irradiation in rice cultivar ‘Taichung 65’: KGM26 and KGM27. The F2 populations from the cross between the two mutants and Taichung 65 showed clear 3 early: 1 late segregation, suggesting control of late heading by a recessive gene. The genes identified in KGM26 and KGM27 were respectively designated as FLT1 and FLT2. The two genes were mapped using the crosses between the two mutants and an Indica cultivar ‘Kasalath’. FLT1 was located on the distal end of the short arm of chromosome 8. FLT2 was located around the centromere of chromosome 9. FLT1 might share the same locus as EHD3 because their chromosomal location is overlapping. FLT2 is inferred to be a new gene because no gene with a comparable effect to that of this gene was mapped near the centromere of chromosome 9. In crosses with Kasalath, homozygotes of late heading mutant genes showed a large variation of days to heading, suggesting that other genes affected late heading mutant genes.Keywords
This publication has 30 references indexed in Scilit:
- Ef7 Encodes an ELF3-like Protein and Promotes Rice Flowering by Negatively Regulating the Floral Repressor Gene Ghd7 under Both Short- and Long-Day ConditionsPlant and Cell Physiology, 2012
- Resequencing 50 accessions of cultivated and wild rice yields markers for identifying agronomically important genesNature Biotechnology, 2011
- Ehd2, a Rice Ortholog of the Maize INDETERMINATE1 Gene, Promotes Flowering by Up-Regulating Ehd1Plant Physiology, 2008
- Gene Nomenclature System for RiceRice, 2008
- MNU-induced mutant pools and high performance TILLING enable finding of any gene mutation in riceMolecular Genetics and Genomics, 2007
- Epistasis among the three major flowering time genes in rice: coordinate changes of photoperiod sensitivity, basic vegetative growth and optimum photoperiodEuphytica, 2007
- Discovery of chemically induced mutations in rice by TILLINGBMC Plant Biology, 2007
- Genome-wide Searching of Single-nucleotide Polymorphisms among Eight Distantly and Closely Related Rice Cultivars (Oryza sativa L.) and a Wild Accession (Oryza rufipogon Griff.)DNA Research, 2006
- The map-based sequence of the rice genomeNature, 2005
- THE ESTIMATION OF MAP DISTANCES FROM RECOMBINATION VALUESAnnals of Eugenics, 1943