Article(id=1305139520958128852, tenantId=1146029695717560320, journalId=1303687221787852879, issueId=1305139508656230632, articleNumber=null, orderNo=null, doi=10.7606/j.issn.1009-1041.2026.02.06, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1753632000000, receivedDateStr=2025-07-28, revisedDate=1764518400000, revisedDateStr=2025-12-01, acceptedDate=null, acceptedDateStr=null, onlineDate=1789099110115, onlineDateStr=2026-09-11, pubDate=1771084800000, pubDateStr=2026-02-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789099110115, onlineIssueDateStr=2026-09-11, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789099110115, creator=13701087609, updateTime=1789099110115, updator=13701087609, issue=Issue{id=1305139508656230632, tenantId=1146029695717560320, journalId=1303687221787852879, year='2026', volume='46', issue='2', pageStart='F2', pageEnd='278', issueExtLink='null', onlineDate='null', pubDate='1771084800000', pubDateStr='2026-02-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789099107183, creator='13701087609', updateTime=1789103172485, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1305156559844176362, tenantId=1146029695717560320, journalId=1303687221787852879, issueId=1305139508656230632, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1305156559844176363, tenantId=1146029695717560320, journalId=1303687221787852879, issueId=1305139508656230632, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=199, endPage=207, ext={EN=ArticleExt(id=1305139521151066837, articleId=1305139520958128852, tenantId=1146029695717560320, journalId=1303687221787852879, language=EN, title=Mutation Sites Identification and Dwarfing Effect Analysis in Wheat Dwarf Mutant Yutong 194, columnId=1305133119129023428, journalTitle=Journal of Triticeae Crops, columnName=Genetics & Breeding, runingTitle=null, highlight=null, articleAbstract=

To elucidate the variation sites, dwarf gene composition and dwarfing effect of a dwarf mutant Yutong 194, the wild type variety Zhoumai 18 was used as the control. Exome capture sequencing was employed to verify the authenticity of the mutation and mine variation sites. Molecular detection of dwarf gene, gibberellin (GA₃) sensitivity tests at the seedling stage, and analyses of plant height and yield-related traits were conducted. The results showed that a 99.63% genetic identity between Yutong 194 and Zhoumai 18. SNPs were predominantly enriched on chromosomes 2B (52.62%), 5A (11.49%), and 2D (6.25%). On chromosome 2B, 96.93% of the differential loci (253 loci) were concentrated within four regions, spanning a total length of 38.42 Mb. Both lines carried the Rht2, Rht9, and Rht24 genes, while Yutong 194 additionally carried the Rht8. Gibberellin sensitivity tests indicated that both lines are insensitive to exogenous GA₃, consistent with the characteristic response of Rht2+Rht24 gene combination. Under different planting conditions, the plant height of Yutong 194 was significantly lower than Zhoumai 18(9.83% reduction in hill-drop sowing, and 11.98% in plot). The dwarfing primarily resulted from shortening of the basal three internodes and the penultimate internode (12.09% -29.08%). The dwarfing did not negatively affect yield traits such as grains per spike or 1 000-grain weight. Instead, it significantly increased the tiller-to-ear ratio (15.5% increase in tillers per plant and 8.63% increase in spike number under hill-drop sowing), ultimately leading to a yield increase rate of 3.88% . This study confirms that Yutong 194 is a dwarf mutant of Zhoumai 18 and demonstrates its potential for synergistically reducing plant height and enhancing yield.

, authors=Xiaojie CHEN^{1, 2}, Wan ZHAO¹, Hongzheng WANG¹, Xuhui MA¹, Jiahuan WANG^{1, 2}, Zhongjie CHENG¹, Jianwei ZHANG¹, Fuyan ZHANG^{1, 2}, authorsList=Xiaojie CHEN, Wan ZHAO, Hongzheng WANG, Xuhui MA, Jiahuan WANG, Zhongjie CHENG, Jianwei ZHANG, Fuyan ZHANG, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1305139521373364950, articleId=1305139520958128852, tenantId=1146029695717560320, journalId=1303687221787852879, language=CN, title=小麦矮秆突变体豫同194的突变位点鉴定及矮化效应分析, columnId=1305133119284212678, journalTitle=麦类作物学报, columnName=遗传育种, runingTitle=null, highlight=null, articleAbstract=

为明确矮秆突变体豫同194的变异位点、矮秆基因组成及矮化效应，以其亲本周麦18为对照，采用外显子捕捉测序验证其突变真实性并挖掘变异位点，开展矮秆基因分子检测、苗期赤霉素（GA₃）敏感性试验及株高与产量性状分析。结果表明，豫同194与周麦18遗传一致性为99.63%，差异SNP主要富集于2B（52.62%）、5A（11.49%）和2D（6.25%）染色体，其中2B染色体上96.93%的差异位点（253个）集中分布于4个区段（总长38.42 Mb）。两者均携带Rht2、Rht9和Rht24基因，豫同194另携带Rht8基因。两者均对外源GA₃不敏感，符合Rht2+Rht24组合的赤霉素响应特性。在不同种植条件下豫同194株高均显著低于周麦18（点播降低9.83%，小区降低11.98%），矮化主要源于基部3个节间和倒2节间的显著缩短（降幅12.09%~29.08%）；矮化未对穗粒数、千粒重等产量性状产生明显负效应，反而使分蘖成穗率显著提高（点播单株分蘖增加15.5%，小区穗数增加8.63%），增产3.88%。由此可见豫同194作为周麦18矮秆突变体，在协同降低株高与提升产量方面具有潜在应用价值。

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