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ARS Home » Midwest Area » Columbia, Missouri » Plant Genetics Research » Research » Publications at this Location » Publication #154545
Title: DIALLEL ANALYSIS OF CHINESE AND U.S. MAIZE GERMPLASM

Author
item GLOVER, M - AGRONOMY-UNIV OF MO
item Willmot, David
item Darrah, Larry

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 11/3/2003
Publication Date: 11/3/2003
Citation: Glover, M.A., Willmot, D.B., Darrah, L.L. 2003. Diallel analysis of chinese and u.s. maize germplasm [abstract]. ASA-CSSA-SSSA Annual Meeting. Paper No. C01-Glover253764-Oral.

Interpretive Summary:

Technical Abstract: Added genetic diversity among commercial maize hybrids may further increase yields and safeguard against past vulnerability. Introducing foreign germplasm into current breeding programs would increase the genetic base from which elite commercial inbreds are derived. Ten populations of maize, created from Chinese and/or U.S. inbreds or strains, were evaluated for combining ability for grain yield, European corn borer resistance, stalk strength traits, flowering time, and plant and ear height. First-year data showed a predominance of genetic over environmental effects. Grain yield general combining ability from Griffing's diallel analysis for one parent of mixed Chinese germplasm was significantly higher than the remainder. Among the three population entries that were largely Stiff Stalk in composition, one was significantly higher yielding than the B73 x Mo17 check when tested on a Mo17 synthetic and the other was marginally non-significant. Luda Red Cob appeared to contribute to combining ability with Lancaster-like materials, as expected, but also with Stiff Stalk-based parents. Combined data from the two-year analyses will be presented.