title: [Molecular mapping of two semidwarf genes in an indica rice variety Aitaiyin3 (Oryza sativa L.)].
abstract: The rice dwarf variety Aitaiyin3 is derived from a semidwarf cultivar Taiyin1. Genetic analysis indicated that the dwarf phenotype in Aitaiyin3 is involved in two recessive loci. Using bulk analysis with SSR markers, the two loci were located on the chromosome 1 and chromosome 4, respectively. Moreover, the allelism test showed that the locus on the chromosome 1 is allelic to the semidwarf gene sd1, while the other one is a new locus, here was named as sdt2. Further molecular mapping showed that sd1 was linked with SSR markers in the order of RM297-RM302-RM212-OSR3-sd1 with genetic distances of 4.7 cM, 0 cM, 0.8 cM and 0 cM, respectively. The linkage relationship of sdt2 with five SSR markers was SSR332-RM1305-sdt2-RM5633-RM307-RM401 with genetic distances of 11.6 cM, 3.8 cM, 0.4 cM, 0 cM and 0.4 cM, respectively.
authors.affiliation: The Agricultural College, Yangzhou University, Yangzhou 225009, China.
authors.forename: Xiang-Qiang
authors.initials: XQ
authors.lastname: Zhao
authors.forename: Guo-Hua
authors.initials: GH
authors.lastname: Liang
authors.forename: Jin-Song
authors.initials: JS
authors.lastname: Zhou
authors.forename: Chang-Jie
authors.initials: CJ
authors.lastname: Yan
authors.forename: Xiao-Ying
authors.initials: XY
authors.lastname: Cao
authors.forename: Ming-Hong
authors.initials: MH
authors.lastname: Gu
mesh_terms: D000483:Alleles; D002874:Chromosome Mapping; D032461:Chromosomes, Plant; D003433:Crosses, Genetic; D017343:Genes, Plant; D005838:Genotype; D018895:Microsatellite Repeats; D012275:Oryza / Q000033:anatomy & histology / Q000145:classification / Q000235:genetics*; D011110:Polymorphism, Genetic