A Study of Forest Tree Seed Grading
Honghong Liu · Forest Inventory and Planning · 2003
Using the seeds of Pinus yunnanensis as research materials, seed grading was studied and explored by using rationale of the unweighted pair-group mean average of cluster analysis. Taking the germination percentage and thousand grain weight as grading criteria, the distance can be calculated by using cluster analysis method, after combining those with shorter distance, the quality grade of seeds can be worked out.