scholarly journals The hybrid breakdown 1(t) locus induces interspecific hybrid breakdown between rice Oryza sativa cv. Koshihikari and its wild relative O. nivara

2008 ◽  
Vol 58 (2) ◽  
pp. 99-105 ◽  
Author(s):  
Kotaro Miura ◽  
Eiji Yamamoto ◽  
Yoichi Morinaka ◽  
Tomonori Takashi ◽  
Hidemi Kitano ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Interspecific Hybrid ◽  
Wild Relative ◽  
Hybrid Breakdown ◽  
T Locus

scholarly journals Mapping of S56(t) responsible for interspecific hybrid sterility between Oryza sativa and Oryza glumaepatula

2018 ◽  
Vol 68 (2) ◽  
pp. 242-247 ◽  
Author(s):  
Yu Zhang ◽  
Jiawu Zhou ◽  
Jing Li ◽  
Ying Yang ◽  
Peng Xu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Interspecific Hybrid ◽  
Hybrid Sterility ◽  
Oryza Glumaepatula

scholarly journals Mapping three new interspecific hybrid sterile loci between Oryza sativa and O. glaberrima

2014 ◽  
Vol 63 (5) ◽  
pp. 476-482 ◽  
Author(s):  
Peng Xu ◽  
Jiawu Zhou ◽  
Jing Li ◽  
Fengyi Hu ◽  
Xianneng Deng ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Interspecific Hybrid

scholarly journals Genetics of Hybrid Sterility and Hybrid Breakdown in an Intersubspecific Rice (Oryza sativa L.) Population

Genetics ◽  
1997 ◽  
Vol 145 (4) ◽  
pp. 1139-1148 ◽  
Author(s):  
Zhikang Li ◽  
Shannon R M Pinson ◽  
Andrew H Paterson ◽  
William D Park ◽  
James W Stansel
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Hybrid Sterility ◽  
Rice Genome ◽  
F1 Hybrids ◽  
Progeny Testing ◽  
Hybrid Breakdown ◽  
F1 Hybrid ◽  
Genetic Mechanisms ◽  
Complicated Nature

F1 hybrid sterility and “hybrid breakdown” of F2 and later generations in rice (Oryza sativa L.) are common and genetically complicated. We used a restriction fragment length polymorphism linkage map and F4 progeny testing to investigate hybrid sterility and hybrid breakdown in a cross between “widely compatible” O. sativa ssp. japonica cultivar Lemont from the Southern U.S. and ssp. indica cultivar Teqing from China. Our results implicate different genetic mechanisms in hybrid sterility and hybrid breakdown, respectively. Hybrid sterility appeared to be due to recombination within a number of putative differentiated “supergenes” in the rice genome, which may reflect cryptic structural rearrangements. The cytoplasmic genome had a large effect on fertility of both male and female gametes in the F1 hybrids. There appeared to be a pair of complementary genes that behaved like “wide compatibility” genes. This pair of genes and the “gamete eliminator” (S1) or “egg killer” (S-5) may influence the phenotypic effects of presumed supergenes in hybrids. Hybrid breakdown appeared to be largely due to incompatibilities between indica and japonica alleles at many unlinked epistatic loci in the genome. These proposed mechanisms may partly account for the complicated nature of postreproductive barriers in rice.

Delimitation of thePSH1(t) gene for rice purple leaf sheath to a 23.5 kb DNA fragment

Genome ◽  
2009 ◽  
Vol 52 (3) ◽  
pp. 268-274 ◽  
Author(s):  
Wen-Ying Wang ◽  
Han-Feng Ding ◽  
Guang-Xian Li ◽  
Ming-Song Jiang ◽  
Run-Fang Li ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Ssr Markers ◽  
Gene Locus ◽  
Dominant Gene ◽  
Leaf Sheath ◽  
Chromosome 1 ◽  
Ril Population ◽  
Segregating Population ◽  
T Locus ◽  
Purple Leaf

Leaf sheath color plays an important role as a marker for rice genetic improvement. A recombinant inbred line (RIL) population consisting of 220 individuals was developed from a cross between an Oryza sativa subsp. indica variety, IRBB60, and an Oryza sativa subsp. japonica variery, 9407. Within the RIL population, a line, RI51, was found to have purple leaf sheath (PSH). To map the gene governing PSH, RI51 was crossed with 9407 green leaf sheath (GSH) to develop an F2segregating population. The distribution of F2plants with PSH and GSH fitted a segregation ratio of 3:1, indicating that the PSH was controlled by a major dominant gene. The gene locus for PSH, tentatively designated as PSH1(t), was identified by surveying two bulks made of the respective 40 individuals with PSH and GSH with SSR markers covering the entire rice genome. The survey indicated that the PSH1(t) region was located on chromosome 1. Further confirmation was made using a large random sample of 360 individuals from the same F2population and the PSH1(t) locus was then mapped on chromosome 1 between SSR markers RM3475 and RM7202 with genetic distances of 2.0 and 1.1 cM, respectively. For fine mapping of PSH1(t), a large F2:3segregating population with 3300 individuals from the seven heterozygous F2plants in the RM3475–RM7202 region was constructed. Analysis of recombinants in the PSH1(t) region anchored the gene locus to an interval of 23.5 kb flanked by the left marker L03 and the right marker L05. Sequence analysis of this fragment predicted six open reading frames encoding a putative trans-sialidase, a putative Plastidic ATP/ADP-transporter, and four unknown proteins. The detailed genetic and physical maps of the PSH1(t) locus will be very useful in molecular cloning of the PSH1(t) gene.

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