Incorporation of elite subtropical and tropical maize germplasm into elite temperate germplasm
Material type:
ArticleLanguage: English Publication details: Bergamo (Italy) : Istituto Sperimentale per la Cerealicoltura, 2006.ISSN: - 2279-8013
| Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|---|
| Article | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Staff Publications Collection | CIS-4824 (Browse shelf(Opens below)) | 1 | Available | 634383 |
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Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0025-6153
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Elite 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.
Text in English
US-IowaSU 2002 WHITEHEAD D r
CIMMYT Staff Publications Collection
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