Genetics of rubber tree (Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell. Arg.) I. Genetic variation in natural populations

• Published in: Silvae genetica Vol. 43; no. 5-6; pp. 307 - 312
• Main Authors: De Paiva, JR, Kageyama, P Y, Vencovsky, R, Contel, P B
• Format: Journal Article
• Language: English
• Published: 01-01-1994
• Subjects: Hevea brasiliensis
• ISSN: 0037-5349

Electrophoretic analyses were effected in 2 populations of rubber trees (Hevea brasiliensis) for the enzymatic systems MDH, SKDH and LAP, with the objective of drawing inferences on the genetic structure of the populations. Four loci (LAP-1, LAP-2, SKDH and MDH-1), with 5, 4, 5, and 3 alleles/locus, respectively, were identified. The estimated variability parameters exhibit a high genetic variation for the 2 populations (H sub(T) = 0.3356) and the greater part of the variability is within the population (99.85%). The parameters that measure genetic distance demonstrate that the 2 populations are similar. The results indicate that the collection of rubber tree germplasm in this region studied should be directed to 1 population, with a greater number of individual per population.