Early Selection of High Quality Families of Dalbergia cochinchinensis Pierre in Southern Fujian Mountainous Areas

From 2019 to 2022, in order to develop high-value rosewood Dalbergia cochinchinensis Pierre, Pinghe Tianma State-owned Forest Farm in Fujian Province introduced 50 familiesfrom Thailand to carry out the family determination test.The results of the investigation of the 4-year-old family trial forest showed that there were significant differences in the stand population conservation rate and ground diameter index among the 50 families; there are significant differences in tree height, crown width, wind damage index and other indicators.The average preservation rate is 80.6%~100%, the average ground diameter is 4.84~6.95 cm, the average tree height is 3.77~5.04 m, the average crown width is 1.71~2.25 m, and the wind damage index is 5.6%~45.1%.The preservation rate, ground diameter, tree height, crown width and wind damage index of each family were comprehensively evaluated by the method of membership function.The highest score was 35 families, with a comprehensive score of 0.79; the lowest score is 17 families, with a comprehensive score of 0.22.According to the selection rate of 20%, 11 high-quality families including 35, 22, 48, 18, 10, 8, 6, 9, 49, 14 and 11 were selected, with a comprehensive score of 0.58~0.79, 23.4%~68.1% higher than the average overall score (0.47).The selected families have good growth performance, strong adaptability and resistance, and can be popularized and applied in production.