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| 1 | Improving the resistance of the rice PTGMS line Feng39S by pyramiding blast,bacterial blight,and brown planthopper resistance genes显示文摘Knowledge of rice(Oryza sativa L.)genes and various DNA markers can be used in genomic breeding programs aimed at developing improved elite rice cultivars.We used an efficient genomic breeding approach to pyramid four resistance genes(Pi2,Xa23,Bph14,and Bph15)in the popular photoperiod-and thermosensitive genic male sterile(PTGMS)rice line Feng39S.We performed foreground selection for the target genes,followed by recombinant selection and background selection.This process reduced the sizes of the genomic segments harboring the target genes(566.8 kb for Pi2,1143.9 kb for Xa23,774.7 kb for Bph14,and 1574.9 kb for Bph15)and accelerated the recovery of the recurrent parent genome to proportions ranging from 98.77%to 99.16%,thus resulting in four near-isogenic lines.To assemble the four resistance genes in Feng39S,we performed a double-way cross combined with foreground and background selection to generate two improved lines of Feng39S(Pi2+Xa23+Bph14+Bph15)with a recurrent parent genome recovery of 98.98%.The two lines showed agronomic performance,grain quality,and fertility–sterility transition characteristics similar to those of the original Feng39S line.The newly developed PTGMS lines and corresponding hybrid combinations were resistant to various field blast isolates and seven representative isolates of bacterial blight.At the seedling stage,the lines also showed resistance against brown planthopper.This study provides an efficient and accurate genomic breeding approach for introducing desirable traits into PTGMS lines. | Dabing Yang Lizhong Xiong Tongmin Mou Jiaming Mi | 2022 | The Crop Journal2022，10，4： | 3 |
| 2 | Fine mapping of qTGW10-20.8, a QTL having important contribution to grain weight variation in rice显示文摘Grain weight is one of themost important determinants of grain yield in rice.In this study,QTL analysis for grain weight,grain length,and grainwidthwas performed using populations derived from crosses between major parental lines of three-line indica hybrid rice.A total of 27 QTL for grain weight were detected using three recombinant inbred line populations derived from the crosses Teqing/IRBB lines,Zhenshan 97/Milyang 46,and Xieqingzao/Milyang 46.Of these,10 were found in only a single population and the other 17 in two or all three populations.Nine of the 17 common QTL were located in regions where no QTL associated with grain weight have been cloned and onewas selected for fine-mapping.Eight populations segregating in an isogenic background were derived from one F7 residual heterozygote of Teqing/IRBB52.The target QTL,qTGW10-20.8 controlling grain weight,grain length,and grain width,was localized to a 70.7-kb region flanked by InDel markers Te20811 and Te20882 on the long arm of chromosome 10.The QTL region contains seven annotated genes,ofwhich six encode proteins with known functional domains and one encodes a hypothetical protein.One of the genes,Os10g0536100 encoding the MIKC-type MADS-box protein OsMADS56,is the most likely candidate for qTGW10-20.8.These results provide a basis for cloning qTGW10-20.8,which has an important contribution to grain weight variation in rice. | Yujun Zhu Zhenhua Zhang Junyu Chen Yeyang Fan Tongmin Mou Shaoqing Tang Jieyun Zhuang | 2019 | The Crop Journal2019，7，5： | 2 |
| 3 | Natural Variation in the Sequence of SNAC1 and Its Expression Level Polymorphism in Rice Germplasms under Drought Stress显示文摘Water is a major limiting factor for food production and many countries fail to produce sufficient food for their population due to severe water scarcity(Jury and Vaux,2005).Rice is the main staple food worldwide.More than 50%of rice in the world is rain-fed and drought causes severe reduction in rice grain yield in rain-fed environments(Venuprasad et al.,2007;Zhang.2007;Sandhu et al.,2014).Therefore,enhancing drought resistance(DR)of rice is important for food security.However,DR is a complex trait,which is controlled by a large number of loci with small effect and is also affected by different genetic background,genotype-by-environment interaction and other stresses such as heat(Hu and Xiong, | Khamdok Songyikhangsuthor Zilong Guo Nili Wang Xiaoyi Zhu Weibo Xie Tongmin Mou Lizhong Xiong | 2014 | Journal of Genetics and Genomics2014，41，11： | 1 |
| 4 | Molecular breeding of thermo-sensitive genic male sterile (TGMS) lines of rice for blast resistance using Pi2 gene显示文摘 | Jiefeng Jiang Tongmin Mou Huihui Yu Fasong Zhou | 2015 | Rice2015，，1： | 1 |
| 5 | Inheritance of leaf color in purple rice显示文摘Two purple rice mutants OPL and PL184 were se-lected from normal green rice lines Ketan Nangkaand W6184 in 1988 and 1990 respectively.No segre-gation was found in two sequent generations.Whenthese two purple rice were crossed with each other, | MOU Tongmin LI Chunhai YANG Guocai and LU Xinggui,Food Crop Research Inst,Hubei Acad of Agri Sci-ences,Wuhan 430064,China | 1995 | Chinese Rice Research Newsletter1995，3，3： | 0 |
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