高脂马尾松优良家系的多性状综合选择

COMPREHENSIVE MULTIPLE CHARACTERS SELECTION FOR SUPERIOR FAMILIES OF HIGH RESIN YIELD MASSONS PINE

以１３年生高产脂马尾松４９个优良家系的子代测定林资料，采用稳健主分量（ＲＯＰＣＡ）方法，对以产脂力为主的１１个性状因子（产脂力、性状表现水平值、产脂力增益、ｂｉ、Ｓ２ｄｉ、Ｓ（１）ｉ、Ｓ（２）ｉ、Ｗｉ值及树高、胸径、单株材积）进行综合分析，结果表明：参试家系可分为４种类型，即第Ⅰ类：高产脂稳定型，共１０个家系，产脂力增益２０．５９％；第Ⅱ类：中产脂变动型，共１４个家系，产脂力增益３．４５％；第Ⅲ类：中产脂高材积稳定型，共１０个家系，其材积增益可达１２．７１％，产脂力增益５．４１％；第Ⅳ类其它类型。建议如从产脂考虑，可多发展第Ⅰ种类型，从脂材两用考虑，可发展第Ⅲ种类型。

ROPCA was used for 49 families of 13 years old high resin Masson's pine. 11 character factors (resin yield ability,level of characters,increment in resin yield ability, b i, S 2 di , S (1) i, S (2) i, W i, height, D.B.H, volume) which connected with producing resin are complicatedly analyzed.The results showed that the tested families can be devided into four types: (1) high and steady resin yielding, there are ten families, resin yield ability is 20.59% higher than the control; (2) medium but not steady resin yielding, there are fourteen families, resin yield ability is 3.45 % higher than control; (3) medium and steady resin yielding, high stock volume, there are ten families, volume increment is 12.71% and resin yield ability is 5.41% higher than the control; (4) others. The type (1) and type (3) are recommended for development.