Incorporation of elite subtropical and tropical maize germplasm into elite temperate germplasm

dc.creatorWhitehead, F.C.
dc.creatorCaton, H.G.
dc.creatorHallauer, A.R.
dc.creatorVasal, S.K.
dc.creatorCórdova, H.S.
dc.date2013-06-30T05:24:27Z
dc.date2013-06-30T05:24:27Z
dc.date2006
dc.date.accessioned2023-07-17T19:57:06Z
dc.date.available2023-07-17T19:57:06Z
dc.identifierhttp://hdl.handle.net/10883/3027
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7509009
dc.descriptionElite germplasm and adequate genetic variation are essential in successful plant breeding programs.Maize (Zea mays L.) breeding programs in the U.S. Corn Belt have realized significant genetic advance with a limited sample of the available maize germplasm. The objective of our study was the incorporation of elite subtropical and tropical germplasm into elite U.S. Corn Belt germplasm. Crosses, backcrosses, and testcrosses were evaluated to identify superior progenies that were intermated to form germplasm sources that include 75% temperate germplasm and either 25% subtropical or 25% tropical germplasm. Backcrosses (25%) and testcrosses (12.5%) with 25% exotic germplasm had maturities and agronomic traits similar to the elite temperate germplasm sources. The populations formed by intermating the superior backcross progenies, based on backcross and testcross data, will provide additional germplasm resources for future use in temperate maize breeding programs.
dc.description43-56
dc.formatPDF
dc.languageEnglish
dc.publisherConsiglio per la Ricerca e la sperimentazione in Agricoltura, Unità di Ricerca per la Maiscoltura
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dc.rightsOpen Access
dc.source1
dc.source51
dc.sourceMaydica
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectCorn
dc.subjectZEA MAYS
dc.subjectGERMPLASM
dc.subjectINTROGRESSION
dc.titleIncorporation of elite subtropical and tropical maize germplasm into elite temperate germplasm
dc.typeArticle
dc.coverageUSA


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