The Half-sib Progeny Test on Superior Plants of Pinus kesiya var. langbianensis

Six characters of each Pinus kesiya var. langbianensis family including height, DBH, height of the lowest branch, crown diameter, straightness of the trunk and standing volume were surveyed for both two groups in half-sib progeny test plantation to explore the genetic quality of superior plants. It was showed by the variance analysis and the variance coefficient analysis that there were significant differences in each growth index among different families; there were great differences in genetic quality among the superior plants, and the plants of half-sib progeny showed high genetic diversity. Meanwhile, each growth index of the majority of the studied families was obviously superior to that of the control, indicating that the initial selection of the superior plants was successful.