| Full text | |
| Author(s): |
Moraes, Pedro L. R. de
;
Nehme, Claudia J.
;
Alves, Marcelo C.
;
Derbyshire, Maria Teresa V. C.
;
Cavalheiro, Alberto J.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | Biochemical Systematics and Ecology; v. 35, n. 4, p. 233-244, Apr. 2007. |
| Field of knowledge: | Physical Sciences and Mathematics - Chemistry |
| Abstract | |
The chemical composition of leaves of 57 trees of Cryptocarya mandioccana from three populations of southeastern Brazil was investigated through HPLC, assaying six flavonoids, seven styrylpyrones, and seven unidentified compounds. From 51 of the former trees, genotypes were obtained from 40 polymorphic loci of 19 isozymes. Cluster analyses of the phytochemical and genetical variation revealed that trees exhibited four chemotypes and five clusters from isozymes, respectively. Discriminant analyses from selected variables of the isozymic and chemical data sets were performed, respectively, in relation to the four chemotypes and the five isozyme clusters. The classification of individuals presented respective error estimates of 9.16% and 13.57%, indicating that the genetic data could explain the clusters from chernotypes and vice versa at acceptable error levels. Linear regressions with Dummy variable showed significant association of locus Skdh-2 with quercetin-3-O-beta-D-glucopyranoside and cryptofolione, indicating that its alleles would be responsible for the chemotype variation between individuals. (AU) | |
| FAPESP's process: | 99/05818-2 - Genetic structure of natural populations of Cryptocarya spp. (Lauraceae) through isoenzymatic and DNA markers |
| Grantee: | Maria Teresa Vitral de Carvalho Derbyshire |
| Support Opportunities: | BIOTA-FAPESP Program - Regular Research Grants |