| 万文涛，赵仁慧，陈甜甜，王 玲，汪尊杰，张 晓，朱冬梅，张晓祥，张伯桥，吴宏亚，张 勇，高德荣，别同德.高产多抗弱筋小麦新品系扬18465标记辅助育种途径分析[J].麦类作物学报,2025,(1):16 |
| 高产多抗弱筋小麦新品系扬18465标记辅助育种途径分析 |
| Anqlysis of a New Weak-Gluten and High-Yield Wheat Line Yang 18465 Conferring Multiple Resistances Through Marker-Assisted Pyramiding Breeding |
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| DOI： |
| 中文关键词: 分子标记 赤霉病 白粉病 黄花叶病 弱筋小麦 |
| 英文关键词:Molecular marker Fusarium head blight Powdery mildew Wheat yellow mosaic virus Weak-gluten |
| 基金项目:国家自然科学基金项目(32072065)；江苏里下河地区农业科学研究所科研专项［SJ(21)102, SJ(22)114］；扬州市“绿扬金凤计划”优秀博士项目 |
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| 中文摘要: |
| 长江中下游麦区是中国最大的弱筋小麦优势产区。由于该麦区小麦生长中后期多雨潮湿，赤霉病和白粉病重发、频发，赤霉病还导致籽粒DON毒素增加，冷冬年份苗期易发生黄花叶病，给粮食和食品安全带来双重挑战。扬麦15是21世纪初育成的高产弱筋小麦品种，但综合抗病性较弱。为保持扬麦15弱筋品质并提高抗性，本课题组以扬麦15为轮回亲本，以兼抗白粉病、黄花叶病的软质小麦种质92R137和中抗赤霉病的高产弱筋小麦品种宁麦9号为供体亲本，构建回交聚合群体；低世代利用分子标记辅助选择将抗白粉病基因Pm21和抗黄花叶病主效位点QYm.nau-2D进行基因聚合，高世代进行赤霉病抗性、品质和产量鉴定，最终育成兼抗赤霉病、白粉病和黄花叶病的高产弱筋小麦新品系扬18465，并进入长江中下游小麦国家区试。扬18465所采用的回交、聚合抗性基因的育种路线可为同类品种的选育提供参考。 |
| 英文摘要: |
| The middle and lower reaches of Yangtze River is the largest production belt of weak-gluten wheat in China. Due to the humid and rainy weather in the middle and late period of wheat growth, Fusarium head blight(FHB) and powdery mildew(PM) occurre frequently and seriously, and FHB led to the accumulation of DON toxin in pathogen-infected grains. Wheat yellow mosaic virus(WYMV) often happens after a cold winter. These disasters threaten grain yield and food security. Yangmai 15 is an elite weak-gluten and high-yield cultivar bred at the beginning of 21 century, but its comprehensive resistance is weak. To keep the advantages of Yangmai 15 and improve disease resistance, a backcross population was constructed with Yangmai 15 as the recurrent parent, and 92R137(a soft-grain cultivar with high resistances to PM and WYMV) and Ningmai 9(a soft-grain wheat cultivar conferring moderate resistance to FHB) as the donor parents. In lower generations, molecular markers were used to select plants pyramiding PM resistance gene Pm21 and WYMV resistance QTL QYm.nau-2D. In high generations, FHB resistance was evaluated and the key quality indices were tested together with grain yield. Finally, a new weak-gluten and high-yield wheat line Yang 18465 conferring resistance to FHB, PM and WYMV, was bred and introduced to the national wheat regional test in the middle and lower reaches of Yangtze River. The breeding procedures of Yang 18465 will provide a useful reference for the breeding of similar varieties. |
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