Genetic variability among Turkish pop, flint and dent corn (Zea mays L. spp. Mays) races: Enzyme polymorphism

Date

2001-01-01

Author

Ilarslan, R
Kaya, Zeki
Tolun, AA
Bretting, PK

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To determine magnitude and pattern of genetic variation, 32 Turkish corn accessions available from the USDA/ARS North Central T-Regional Plant Introduction Station (NCRPIS) collections (Ames, Iowa), representing pop, flint and dent corn races, different climatic, geographic and topographic areas in Turkey, were identified and, 19 isozyme systems were studied. Thirty-nine alleles were detected by 19 isozyme loci in 32 accessions. The PGD-2, Mmm-1, GOT-3 and IDH-1 loci were found to be monomorphic in all accessions. Mean number of alleles per locus varied between 1.2 in Balikesir-167949 accession to 1.7 in Ankara-177600, Trabzon-185062, Eskisehir-204822 and Samsun-239573 accessions. The proportion of polymorphic loci ranged from as low as 15.8% in Balikesir-167949 to as high as 57.9% in Trabzon-185049 accession. Observed heterozygosity was the highest in Adana-183779 and the lowest in Ankara-204800 accession. Genetic identities ranged from 0.823 for 170881-Kocaeli and 167949-Balikesir pair to 0.997 for 182327-Igdir and 168008-Kirklareli pair. Dendrogram constructed by using Nei's genetic distances (1978) revealed three clustering groups, though one of the clusters included only 170881-Kocaeli accession. It is concluded that 170881-Kocaeli accession must have experienced with intensive selection, inbreeding and/or bottleneck effects in the past. Corn germplasm managers and breeders could use the results of the present studies for monitoring genetic resources, accession identification, and sampling genetic diversity, but agronomic characteristics of these corn accessions are also needed for a better utlization of Turkish corn landraces evolved over the years.

Subject Keywords

Corn accessions, Genetic diversity, Heterozygosity, Isozymes, Polymorphism, Turkey

URI

https://hdl.handle.net/11511/35335

Journal

EUPHYTICA

DOI

https://doi.org/10.1023/a:1012698332166

Collections

Department of Biology, Article

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Genetic variability among Turkish pop, flint and dent corn (Zea mays L. spp. mays) races: Morphological and agronomic traits Ilarslan, R; Kaya, Zeki; KANDEMİR, İRFAN; Bretting, Peter K (Springer Science and Business Media LLC, 2002-01-01) 32 Turkish corn accessions representing different climatic, geographic and topographic areas in Turkey were identified. Genetic variation and its pattern in three corn races (pop, flint and dent) included 32 accessions were investigated using 25 morphological and agronomic traits. Vegetative, ear and kernel related traits were significantly varied both among races and accessions within races. Variance component due to races and accessions within race were statistically significant, but the variance componen...
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Citation Formats

R. Ilarslan, Z. Kaya, A. Tolun, and P. Bretting, “Genetic variability among Turkish pop, flint and dent corn (Zea mays L. spp. Mays) races: Enzyme polymorphism,” EUPHYTICA, pp. 171–179, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35335.