Use of allozymes as genetic markers for predicting performance in maize single cross hybrids

Frei, O.M. and Stuber, C.W. and Goodman, M.M. (1986) Use of allozymes as genetic markers for predicting performance in maize single cross hybrids. Crop Science, 26 (1). pp. 37-42.

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Allozyme genotypes at 21 loci were used to measure genetic relatedness between 6 testers, each representing different germplasm sources (populations), and 406 inbred lines. Line pairs were classified into similar (SA) or dissimilar (DA) allozyme groups. A second genetic relatedness measure was based on pedigrees. Lines derived from the same population were considered to have similar pedigrees (SP); lines derived from different populations were classified as having dissimilar pedigrees (DP). Each tester was crossed to a set of lines (usually 5) from each of the 4 allozyme-pedigree combinations. Different sets of lines were used for the single crosses with each of the testers. These single crosses were field tested in 7 environments. Significantly higher yield (10%) was observed in the DA class than in the SA class. The DP class outyielded the SP class by 37%. In spite of the highly significant main effects of allozymes and pedigrees, allozyme dissimilarity was associated with higher yield only when the pedigree background was similar (SP class). Neither allozymes nor pedigrees were associated with yield in crosses to tester B73

Item Type: Article
Author Affiliation: North Carolina State Univ., Raleigh, NC 27695-7614, USA
Subjects: Plant Protection > Pesticides
Plant Protection > Pests
Crop Improvement > Genetics/Genomics
Divisions: Maize
Depositing User: Mr B Krishnamurthy
Date Deposited: 20 Apr 2011 04:39
Last Modified: 20 Apr 2011 04:39
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