The Molecular Breeding of Different Ecotype <i>Japonica</i> Varieties Resistant to Rice Blast with High Genome Collinearity
The Yangtze River Delta (YRD) is one of the most important <i>japonica</i> rice planting areas in China. Balancing the resistance, yield, and quality has always been a core issue in rice breeding due to the negative correlation among these three factors, while the broad-spectrum blast re...
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2025-06-01
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| author | Shengyuan Zeng Cancan Du Yihao Yang Qingfeng Hu Chuang Li Fang Feng Min Guo Dedao Jing Tianzi Lin Hongbing Gong Changjie Yan |
| author_facet | Shengyuan Zeng Cancan Du Yihao Yang Qingfeng Hu Chuang Li Fang Feng Min Guo Dedao Jing Tianzi Lin Hongbing Gong Changjie Yan |
| author_sort | Shengyuan Zeng |
| collection | DOAJ |
| description | The Yangtze River Delta (YRD) is one of the most important <i>japonica</i> rice planting areas in China. Balancing the resistance, yield, and quality has always been a core issue in rice breeding due to the negative correlation among these three factors, while the broad-spectrum blast resistance gene <i>Piz</i> is closely linked with <i>Hd1</i>, the major gene regulating days to heading (DTH), and a precise combination of their beneficial alleles plays a key role in synchronously improving blast resistance and the regional adaptability of <i>japonica</i> rice in YRD. In this study, using the backcross progeny population derived from backbone parent ZD9471 and W1063, two alleles of <i>Hd1</i> were identified. Then, through molecular marker-assisted selection combined with Green Super Rice 40K (GSR40K) chip-based screening, six introgression lines (ILs) with two different alleles combinations of <i>Hd1</i> and <i>Pigm</i> were obtained. An evaluation of the blast resistance, yield, and quality traits showed that compared with the recipient parent, the panicle blast resistance of ILs was significantly enhanced; the grain number per panicle increased consistently with the delaying of the growth period, leading to higher yield in the ILs; the grain quality were synchronously improved. Two representative lines with similar genetic backgrounds but a significantly different regional adaptability, exhibiting a good blast resistance, high yield, and prominent quality were approved and demonstrated promising application prospects. |
| format | Article |
| id | doaj-art-32aae6868b9f4c2badfab7691b8dc025 |
| institution | Kabale University |
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| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| series | Plants |
| spelling | doaj-art-32aae6868b9f4c2badfab7691b8dc0252025-08-20T03:29:51ZengMDPI AGPlants2223-77472025-06-011412183610.3390/plants14121836The Molecular Breeding of Different Ecotype <i>Japonica</i> Varieties Resistant to Rice Blast with High Genome CollinearityShengyuan Zeng0Cancan Du1Yihao Yang2Qingfeng Hu3Chuang Li4Fang Feng5Min Guo6Dedao Jing7Tianzi Lin8Hongbing Gong9Changjie Yan10Agricultural College, Yangzhou University, Yangzhou 225009, ChinaZhenjiang Academic of Agricultural Sciences, Zhenjiang 212400, ChinaAgricultural College, Yangzhou University, Yangzhou 225009, ChinaZhenjiang Academic of Agricultural Sciences, Zhenjiang 212400, ChinaZhenjiang Academic of Agricultural Sciences, Zhenjiang 212400, ChinaWuhan Greenfafa Institute of Novel Genechip R&D Co., Ltd., Wuhan 430070, ChinaAgricultural College, Yangzhou University, Yangzhou 225009, ChinaZhenjiang Academic of Agricultural Sciences, Zhenjiang 212400, ChinaZhenjiang Academic of Agricultural Sciences, Zhenjiang 212400, ChinaZhenjiang Academic of Agricultural Sciences, Zhenjiang 212400, ChinaAgricultural College, Yangzhou University, Yangzhou 225009, ChinaThe Yangtze River Delta (YRD) is one of the most important <i>japonica</i> rice planting areas in China. Balancing the resistance, yield, and quality has always been a core issue in rice breeding due to the negative correlation among these three factors, while the broad-spectrum blast resistance gene <i>Piz</i> is closely linked with <i>Hd1</i>, the major gene regulating days to heading (DTH), and a precise combination of their beneficial alleles plays a key role in synchronously improving blast resistance and the regional adaptability of <i>japonica</i> rice in YRD. In this study, using the backcross progeny population derived from backbone parent ZD9471 and W1063, two alleles of <i>Hd1</i> were identified. Then, through molecular marker-assisted selection combined with Green Super Rice 40K (GSR40K) chip-based screening, six introgression lines (ILs) with two different alleles combinations of <i>Hd1</i> and <i>Pigm</i> were obtained. An evaluation of the blast resistance, yield, and quality traits showed that compared with the recipient parent, the panicle blast resistance of ILs was significantly enhanced; the grain number per panicle increased consistently with the delaying of the growth period, leading to higher yield in the ILs; the grain quality were synchronously improved. Two representative lines with similar genetic backgrounds but a significantly different regional adaptability, exhibiting a good blast resistance, high yield, and prominent quality were approved and demonstrated promising application prospects.https://www.mdpi.com/2223-7747/14/12/1836<i>Japonica</i> riceblast resistanceyieldquality<i>Pigm</i><i>Hd1</i> |
| spellingShingle | Shengyuan Zeng Cancan Du Yihao Yang Qingfeng Hu Chuang Li Fang Feng Min Guo Dedao Jing Tianzi Lin Hongbing Gong Changjie Yan The Molecular Breeding of Different Ecotype <i>Japonica</i> Varieties Resistant to Rice Blast with High Genome Collinearity Plants <i>Japonica</i> rice blast resistance yield quality <i>Pigm</i> <i>Hd1</i> |
| title | The Molecular Breeding of Different Ecotype <i>Japonica</i> Varieties Resistant to Rice Blast with High Genome Collinearity |
| title_full | The Molecular Breeding of Different Ecotype <i>Japonica</i> Varieties Resistant to Rice Blast with High Genome Collinearity |
| title_fullStr | The Molecular Breeding of Different Ecotype <i>Japonica</i> Varieties Resistant to Rice Blast with High Genome Collinearity |
| title_full_unstemmed | The Molecular Breeding of Different Ecotype <i>Japonica</i> Varieties Resistant to Rice Blast with High Genome Collinearity |
| title_short | The Molecular Breeding of Different Ecotype <i>Japonica</i> Varieties Resistant to Rice Blast with High Genome Collinearity |
| title_sort | molecular breeding of different ecotype i japonica i varieties resistant to rice blast with high genome collinearity |
| topic | <i>Japonica</i> rice blast resistance yield quality <i>Pigm</i> <i>Hd1</i> |
| url | https://www.mdpi.com/2223-7747/14/12/1836 |
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