One-year provenance/progeny test results of Pinus tecunumanii from Guatemala established in Brazil and Colombia.
1985; Commonwealth Forestry Association; Volume: 64; Issue: 1 Linguagem: Inglês
ISSN
0010-3381
Autores Tópico(s)Plant-Derived Bioactive Compounds
ResumoMother tree seed collections were made of Pinus tecunmanii (Schw.) Equiluz and Perry in the provenances of San Jeronimo and San Lorenzo, Guatemala in 1980 and 1981. Provenance/ progeny tests were established with the seed from these collections at 570 m, 1200 m and 2400 m elevation on three sites in Brazil and Colombia. Included in the tests were control lots of Pinus oocarpa Schiede from Mt. Pine Ridge, Belize and Chiquimula, Guatemala. Analyses of one-year height data indicates that at 2400 m elevation, the San Jeronimo provenance of P. tecunumanii statisically out performed the San Lorenzo source (mean height 96 cm vs. 84 cm). Also, at 2400 m elevation, ninety percent of the P. tecunumanii families from the San Jeronimo provenance grew as well as the Mt. Pine Ridge, P. oocarpa control. At the mid and low elevation sites (1200 m and 570 m) no statistical differences were detected in height growth between the two P. tecunumanii provenances; the Mt. Pine Ridge, P. oocarpa control was superior to P. tecunumanii. Pinus tecunumanii statistically out performed the P. oocarpa Guatemala control at 2400 m and 1200 m elevation; no differences were detected between the two species at the 570 m site.
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