Species relationship in the Pennisetum gene pool: enzyme polymorphism
- 1 December 1989
- journal article
- Published by Springer Science and Business Media LLC in Theoretical and Applied Genetics
- Vol. 78 (6), 801-808
- https://doi.org/10.1007/bf00266662
Abstract
Variation in leaf esterases (EST), 6-phosphogluconate dehydrogenase (PGD), shikimate dehydrogenase (SKDH), leucine aminopeptidase (AMP), phosphoglucomutase (PGM) and malate dehydrogenase (MDH) is reported in the Pennisetum gene pool. In the primary gene pool, polymorphism for EST, AMP, SKDH was very high, as compared to the near-monomorphic isozymes of PGD. Two loci controlling leaf esterases Est-1 and Est-2, were identified in the primary gene pool. Differences in allelic frequency distribution of the polymorphic Est-1 locus occur between the cultivated and wild pearl millet. The prevalent alleles of Est-1 are absent in P. purpureum Schumach (secondary gene pool). A monomorphic band of the α-esterase-specific Est-2 locus was identified in most of the secondary gene pool accessions, P. squamulatum Fresen and an accession of P. pedicellatum. SKDH and EST revealed differences between most of the tertiary gene pool species. By contrast, a PGD zymogram was prevalent in several species of different sectional taxa. Gene duplication for PGD isozymes occurs in the diploid species, P. ramosum, of the tertiary gene pool. Heterodimers of PGD and EST were observed in the hybrid between pearl millet and P. squamulatum, whereas a monomeric structure characterized SKDH and AMP.Keywords
This publication has 12 references indexed in Scilit:
- Mitochondrial DNA variation in pearl millet and related speciesTheoretical and Applied Genetics, 1988
- Evidence for the duplication of PGI genes in Dipcadi serotinum L. (Liliaceae)Heredity, 1988
- Enzyme diversity in pearl millet (Pennisetum glaucum)Theoretical and Applied Genetics, 1987
- Cytogenetics of Pennisetum schweinfurthii Pilger and its Hybrids with Pearl Millet 1Crop Science, 1986
- Mise en évidence d'une liaison génétique entre un gène de nanisme et des marqueurs enzymatiques chez le mil pénicillaire (Pennisetum glaucum L.)Canadian Journal of Genetics and Cytology, 1985
- Cytogenetics of double cross hybrids between Pennisetum americanum — P. purpureum amphiploids and P. americanum x Pennisetum squamulatum interspecific hybridsTheoretical and Applied Genetics, 1984
- Conservation and Duplication of Isozymes in PlantsScience, 1982
- Interspecific hybrids between pearl millet and fountaingrassJournal of Heredity, 1979
- Genetic analysis of alcohol dehydrogenase isozymes in pearl millet (Pennisetum typhoides)Biochemical Genetics, 1979
- A SYSTEMATIC STUDY OF PENNISETUM SECT. PENNISETUM (GRAMINEAE)American Journal of Botany, 1977