Characterization of interspecific hybrids and backcross progenies from a cross between Oryza minuta and Oryza sativa

被引：16

作者：

Guo SiBin ^{[1
]}

Qin FaLan ^{[1
]}

Zhang DuanPin ^{[1
]}

Lin XingHua ^{[1
]}

机构：

[1] Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Natl Ctr Crop Mol Breeding, Wuhan 430070, Peoples R China

来源：

SCIENCE IN CHINA SERIES C-LIFE SCIENCES | 2009年 / 52卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Oryza sativa L; Oryza minuta; interspecific hybridization; backcross progeny; introgression line; QUANTITATIVE TRAIT LOCI; ALIEN ADDITION LINES; CULTIVATED RICE; WILD-RICE; BACTERIAL-BLIGHT; O-MINUTA; INTROGRESSION; RESISTANCE; IDENTIFICATION; RUFIPOGON;

D O I：

10.1007/s11427-008-0155-0

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Oryza minuta, a tetraploid wild relative of cultivated rice, is an important source for the genetic improvement. Interspecific hybrids were obtained from the cross of O. sativa L. (IR24) and O. minuta (Acc. No. 101133) with 5.58% crossability, which ranged from 0.11% to 1.62% in the backcross generations. The chromosome numbers of the backcross progenies were 24 to 48. Seven yield-related traits of the parents, hybrid F-1, and backcross progenies were evaluated. Simple sequence repeat markers analysis showed that the polymorphism ratio of SSR bands between IR24 and Acc. No. 101133 was 93.2%. The average donor segment number, length, donor genome size, and percentage of donor genome of 92 BC3F1 plants (2n=24) were 24.1, 17.8 cM, 438.4 cM and 26.2%, respectively. They were complex variation and uneven among the chromosomes. These introgression lines could be used to identify the favorable genes of O. minuta and provide a new platform for the genetic improvement of cultivated rice.

引用

页码：1148 / 1155

页数：8

共 27 条

[1] TRANSFER OF BACTERIAL-BLIGHT AND BLAST RESISTANCE FROM THE TETRAPLOID WILD-RICE ORYZA-MINUTA TO CULTIVATED RICE, ORYZA-SATIVA [J].