火炬松家系区域引种试验研究

火炬松家系区域引种试验研究结果表明,火炬松家系的适应性和抗逆性较强,但不同家系间的遗传分化和适应环境的能力相差较大,家系与环境间存在明显的互作效应,不同家系在速生性、适应性和变异性上差异极显著。经综合评判,选出速生性、适应性和抗逆性强且变异性小的7个优良家系CT-4、CT-6、MG-1、亚林-1、浙长乐母树96、南屿-1和PM-2,在Ⅲ类以上立地和经营管理水平一般的条件下,这些家系的树高、胸径和材积年生长量分别可达0.7~1.2 m、1.2~2cm和0.002~0.007 m3,比湿地松和马尾松具有明显的增益优势,适宜作为用材林进一步引种栽培与推广示范。

Studies on Regional Introduction Test of Pinus taeda Families

The result of regional introduction test of pinus taeda families indicated Pinus taeda families had higher adaptability and stress resistance,but there were greater difference in genetic differentiation and acclimatization between different families of Pinus tadea.There were obvious interaction between the families and environment.It was significant difference in fast-growing ability,adaptability and variability between different families.By integrated judgement,7 excellent clones,including CT-4,CT-6,MG-1,Yalin-1、Zhechangle Mother Tree 96、Nanyu-1 and PM-2,were selected according to their fast-growing ability,adaptability,high stress resistance and little variability.Being planted in soil level Ⅲ(or above) with general management,annual increment of height,DBH,volume of these families reached 0.7-1.2 m,1.2-2 cm and 0.002-0.007 m~3,respectively,which showed these families had more predominance in gain than that of Pinus elliottii and Pinus massoniana,and were suitable for further introduction,cultivation,popularization and demonstration as timber forests.