杉木耐贫瘠优良无性系苗期初选  

Preliminary Evaluation on Fine Clones of Chinese fir Based on Sexual Progeny Tests

作　　者：齐明[1] 何贵平[1] 曹高铨 程亚平 罗修宝 翁春媚[3] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400 [2]浙江省庆元县庆元林场,浙江庆元323800 [3]浙江省遂昌县林业局,浙江遂昌323300

出　　处：《林业科学研究》2013年第3期379-383,共5页Forest Research

基　　金："十二五"国家科技支撑计划项目"杉木三代育种技术研究与示范"(2012BAD01B0201);浙江省科技厅重大专项"杉木高生产力优质新品种选育与示范"(2012C12908-11)

摘　　要：20世纪90年代，我国南方营造了大量的杉木（Cunninghamia lanceolata（Lamb．）Hook.）速丰林，但由于忽视了良种的耐贫瘠特性，致使约30％的杉木人工林不能成林，约20％的人工林不能成材；另外每年新增大量的退化地需要治理，也需要大量耐瘠薄的优良品系。因此，杉木良种的抗逆性评定与选择十分重要。杉木无性系在良种培育中具有独有的优势，它能保持母本的的遗传特性，生长一致，林相整齐，便于集约经营，尤其是无性系的木材材性均匀一致，收获期相同，In order to shorten the breeding cycle of Chinese fir （ Cunninghamia lanceolata） clone, and select good clones with stronger tolerance to barrenness, in the light of 31 clones, artificial design nutrient environments, the experiment was carried out according to two factors randomized blocks, 8 individuals （in 8 cups） in each plot. After the experiment finished, the height and diameter at base of seedling were measured on entire experiment. The other traits such as the aboveground biomass, the underground biomass, the total biomass, the root-shoot ratio and the entire P content of individual have been measured according to sampling method. The results of statistical analysis showed that： （1）There were obvious differences among the clones in all the traits besides root-shoot ratio; （2） Obvious differences in all the traits existed under different nutrient stress and different sites conditions among differ- ent clones ; （ 3 ） The interaction of clone ~ nutrient coercion processing was complex ; （ 4 ） The research traits showed a certain variation and repeatability over intermediate level. Based on the variance analysis （fixed model）, the PCA selection index under different situations was derived and obtained. Using certain selected intensity, 13 outstanding clones were evaluated from the entire experiment. Among them 7 clones were anti-phosphorus and the anti-potassium lack （happy nitrogenous fertilizer） clones, 7 clones were anti-phosphorus lack （happy nitrogen potassium fertilizer） clones, 8 fine clones were selected under normal nutrient management （happy nitrogenous, phosphorus, potassium）, there were 5 fine clones with good performance, and simultaneously very stable under all kind of conditions. These clones may be applied to field tests.

关 键 词：杉木 无性系 耐贫瘠 主成分选择指数 初选 

分 类 号：S723.1[农业科学—林木遗传育种]