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The choiceness varieties of Canarium album were tested in three different places of Guangdong. The study researched the 3-4a trials after engrafting, the results were as follows: (1) The results of variance anaylsis indicated that there were highly significant differences in yield per plant and yield per crown projection area among clones, and the height, stem diameter and crown side were highly significant in some test sites. It showed that 体育博彩平台排名 diversity existed in yield per plant among clones, and selecting high yield clones were effective. (2)The results of multiple comparisons showed that the yield per plant and yield per crown projection area of g18 were the highest with highly significant differences among all clones in 3 test sites. G18 could been farther proved high yield and well adaptability clone. The yield per plant of old tree grafted and 1a tree grafted reached 15.04kg and 2.30～9.10kg. (3) The clone heritability was as high as 0.91~0.96, when selection rate was 0.1 and 0.11～0.14, the actual 体育博彩平台排名 gain in yield was 16.36%～68.25% and 59.36%～108.74% respectively. (4) The yield of G18’ Ci was 0.425～0.7176, which ranked firstly in 3 test sites and was significant, the effect of clone×year interaction was less significant, the coefficient of variation was 0～5.89%, which indicated that g18 was fertility and stability, and it adapted well to different kinds of climate.
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