Isozyme diversity in sour, sweet, and ground cherry

Thirty-six sour (Prunus cerasus L.), sweet (P. avium L.), and ground cherry (P.fruticosa Pall.) selections were evaluated for seven enzyme systems and principal coordinate analysis was used to examine isozyme divergence among these cherry species. The enzyme systems studied were phosphoglucose isome...

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Bibliographic Details
Published in:Theoretical and applied genetics 1995-05, Vol.90 (6), p.847-852
Main Authors: Beaver, J.A, Iezzoni, A.F, Ramm, C.W. (Michigan State Univ., East Lansing (USA). Dept. of Horticulture)
Format: Article
Language:English
Subjects:
Biological and medical sciences
Classical genetics, quantitative genetics, hybrids
Fundamental and applied biological sciences. Psychology
Genetics of eukaryotes. Biological and molecular evolution
ISOENZIMAS
ISOENZYME
POLIMORFISMO
POLIPLOIDIA
POLYMORPHISME
POLYPLOIDIE
PRUNUS AVIUM
PRUNUS CERASUS
Pteridophyta, spermatophyta
Vegetals
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Summary:Thirty-six sour (Prunus cerasus L.), sweet (P. avium L.), and ground cherry (P.fruticosa Pall.) selections were evaluated for seven enzyme systems and principal coordinate analysis was used to examine isozyme divergence among these cherry species. The enzyme systems studied were phosphoglucose isomerase (PGI), isocitrate dehydrogenase (IDH), phosphoglucomutase (PGM), 6-phosphogluconate dehydrogenase (6-PGD), leucine aminopeptidase (LAP), shikimate dehydrogenase (SKDH), and malate dehydrogenase (MDH). The first principal coordinate, which accounted for 41% of the total variation, separated the diploid sweet cherry selections from the sour, ground, and sour x ground cherry tetraploids. An additional 86 selections were evaluated for up to six of the enzyme systems to determine the polymorphisms at the enzyme loci and the level of heterozygosity between the diploid sweet cherry and the tetraploid species and interspecific hybrids. 6-PGD was the most polymorphic enzyme exhibiting 16 patterns. The tetraploid cherry species were more heterozygous than the diploid sweet cherry with an average heterozygosity of 78% compared to 19% for the diploids.
ISSN:0040-5752
1432-2242
DOI:10.1007/BF00222021