Protein variation in diploid and tetraploid orchard grass (Dactylis glomerata L.): Formal genetics and population polymorphism of peroxidases and malate dehydrogenases
✍ Scribed by R. Lumaret
- Publisher
- Springer Netherlands
- Year
- 1982
- Tongue
- English
- Weight
- 610 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0016-6707
No coin nor oath required. For personal study only.
✦ Synopsis
The genetics of one malate dehydrogenase locus and two peroxidase loci were studied in leaves of diploid and more particularly tetraploid Dactylis glomerata L. by means of starch gel electrophoresis. Seven, two and four codominant alleles at the PXI, PX2 and MDHI loci respectively are described. Malate dehydrogenases showed dimeric structure and peroxidases behaved as monomers but with several molecular structures in the case of PX 1. No linkage was found between PX 1 and MDH 1 nor between PX 1 or MDH 1 and other loci studied previously.
The polymorphism of the PX1 and MDHI loci was investigated in four natural populations. Allelic frequencies and phenotypie distributions revealed a great difference in allelic diversity and in the level of heterozygotes between Eurasian and Mediterranean populations for PXI. Numerous alleles with very low frequencies were found at the MDH 1 locus in all tetraploid populations.