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Here, we identified a dormancy QTL using a Redlan\u00d7IS9530 RIL population, where parent lines are low in tannins and early flowering but otherwise contrasting in grain dormancy and plant height. We phenotyped this population in 2\u2009years with informative PHS\u2010related traits (grain germination index, embryo sensitivity to abscisic acid and in one year the actual natural sprouting), revealing a robust dormancy QTL in chromosome 9 (qDOR\u20109). This signal overlapped with associations found for plant height (caused by the <jats:italic>dw1<\/jats:italic> locus, used for decades in sorghum improvement) and time to flowering. The effect of qDOR\u20109 was validated with independent near isogenic lines carrying the IS9530 \u201cdormant\u201d allele while maintaining the Redlan <jats:italic>dw1<\/jats:italic> \u201cshort\u201d allele. Additional analyses on Yellow Milo, from which the <jats:italic>dw1<\/jats:italic> allele originated, implied that a low dormancy allele close to <jats:italic>dw1<\/jats:italic> was introduced to Redlan\u2014as well as to many other currently productive lines\u2014by breeding efforts aimed at decreasing plant height, thus illustrating a new instance of genome erosion canalised by crop breeding. However, the introgression of qDOR\u20109 could enhance PHS tolerance in cultivated <jats:italic>dw1<\/jats:italic>\u2010carrying backgrounds without affecting plant stature.<\/jats:p>","DOI":"10.1111\/pbi.70007","type":"journal-article","created":{"date-parts":[[2025,3,16]],"date-time":"2025-03-16T16:04:06Z","timestamp":1742141046000},"page":"1783-1797","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Introgression of dwarfing allele <i>dw1<\/i> reduced seed dormancy and increased pre\u2010harvest sprouting susceptibility in grain sorghum converted lines"],"prefix":"10.1111","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3356-1504","authenticated-orcid":false,"given":"Mar\u00eda Ver\u00f3nica","family":"Rodr\u00edguez","sequence":"first","affiliation":[{"name":"Instituto de Investigaciones Fisiol\u00f3gicas y Ecol\u00f3gicas Vinculadas a la Agricultura (IFEVA\u2013CONICET)  Ciudad Aut\u00f3noma de Buenos Aires Argentina"},{"name":"C\u00e1tedra de Fisiolog\u00eda Vegetal, Departamento de Biolog\u00eda Aplicada y Alimentos, Facultad de Agronom\u00eda de la Universidad de Buenos Aires  Ciudad Aut\u00f3noma de Buenos Aires Argentina"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Diego Hern\u00e1n","family":"S\u00e1nchez","sequence":"additional","affiliation":[{"name":"Instituto de Investigaciones Fisiol\u00f3gicas y Ecol\u00f3gicas Vinculadas a la Agricultura (IFEVA\u2013CONICET)  Ciudad Aut\u00f3noma de Buenos Aires Argentina"},{"name":"C\u00e1tedra de Fisiolog\u00eda Vegetal, Departamento de Biolog\u00eda Aplicada y Alimentos, Facultad de Agronom\u00eda de la Universidad de Buenos Aires  Ciudad Aut\u00f3noma de Buenos Aires 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Ver\u00f3nica","family":"Demkura","sequence":"additional","affiliation":[{"name":"Instituto de Investigaciones Fisiol\u00f3gicas y Ecol\u00f3gicas Vinculadas a la Agricultura (IFEVA\u2013CONICET)  Ciudad Aut\u00f3noma de Buenos Aires Argentina"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cristian Camilo","family":"\u00c1lvarez Correa","sequence":"additional","affiliation":[{"name":"Instituto de Investigaciones Fisiol\u00f3gicas y Ecol\u00f3gicas Vinculadas a la Agricultura (IFEVA\u2013CONICET)  Ciudad Aut\u00f3noma de Buenos Aires Argentina"},{"name":"C\u00e1tedra de Cultivos Industriales, Departamento de Producci\u00f3n Vegetal, Facultad de Agronom\u00eda de la Universidad de Buenos Aires  Ciudad Aut\u00f3noma de Buenos Aires Argentina"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luis Germ\u00e1n","family":"Fern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Instituto de Agrobiotecnolog\u00eda y Biolog\u00eda Molecular 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