不同家系望天树苗期生长评价

应用田间生长量实测法和统计分析法研究11个不同家系望天树1 a生苗木的生长特性.结果表明:不同家系间的性状表现存在明显差异.那坡百南02家系苗高生长最快,河口01家系地径生长最快,那坡百合家系叶面积最大,那坡百南02家系的生物量积累明显高于其他家系;苗高、地径、叶面积3个性状均较大程度地受遗传控制,受环境影响较小;那坡百南02家系的质量指数显示其为最优家系,其次为河口01家系;河口02家系和景区2家系的苗期质量等级最差.

Evaluation of Seedling Growth of Parashorea chinensis in Different Families

The field measured increment method and statistical analysis method were applied to evaluate the growth characteristics of one-year seedlings of 11 different families.It was found the differences of characters exited significantly between different families.The two families from Napobainan were the fastest in height growth while the No.01 family from Hekou had the maximum increment at ground diameter.The leaf area of Napobaihe family was the biggest.The biomass accumulation in the No.02 family from Napobainan was significantly higher than other families.Seedling height,ground diameter,leaf area of the three traits were controlled by the larger degree of genetic and less affected by the environment.Combined the measured data,the quality index of the Napobainan 02 family was the best families,the No.01 family from Hekou was followed.The seeding quality grade of the Hekou 02 family and Jingqu 2 family was the worst.