Results of progeny test of Ailanthus triphysa (Dennst) Alston in Binh Phuoc province

Abstract

This study aimed to select prospect A. triphysa cultivars (provenances and
families) for sawlog wood plantation in the Southeast region, Vietnam. The
experiment was designed as randomized column-row with 10 replicates, 4
trees in a line. Studied materials were collected from 42 plus trees of 7
domestic provenances. The results indicated that almost the tested
provenances and families revealed good adaptability to the study site. At
age 5, all provenances and families had high survival rate (over 80%). Tree
growth rate was significantly different among provenances or among
families. We determined one promising provenance (Tuyen Quang) with
15% advanced productivity compared with mean value of entire trial as
well as four good families (TQ6, ĐN13, VP6, ĐN11) in which productivity
was more than 30 - 52% higher than the mean value of the trial. Parameters
in term of stem quality at measuring time was poor, however superior
provenance and families were good. Bark canker symptom was observed in
some families of some provenances but only low level (less than 5% and
15% for provenance and family level, respectively).