云南松优良家系超级苗选择研究  

Study on super seedling selection of superior families of Pinus yunnanensis Franch

作　　者：吕学辉[1] 魏巍[1] 陈诗[1] 许玉兰[1] 李根前[1] 

机构地区：[1]西南林业大学林学院/西南山地森林保育与利用省部共建教育部重点实验室,云南昆明650224

出　　处：《云南大学学报（自然科学版）》2012年第1期113-119,共7页Journal of Yunnan University(Natural Sciences Edition)

基　　金：云南省教育厅科学研究基金重大专项(ZD2009003B)资助;云南省教育厅科学研究基金项目(2010Z042)资助;云南省应用基础研究面上项目(2010CD065)资助;北京林业大学林木育种国家工程实验室开放基金课题(FOP2010-10)资助

摘　　要：为探讨云南松苗期选择的依据和标准,加速现有优良遗传资源的早期、短期开发利用,对20个家系1 a苗木的生长性状差异进行了分析.结果表明:家系之间以及同一家系不同个体之间的苗高、地径生长量存在极显著差异,且苗高生长量差异明显大于地径生长量.因此,以各家系平均高生长量加1倍标准差为最低标准进行超级苗选择,在11 331株育种群体中共选超级苗1 629株,入选率为14.3%.其中,超级苗平均高度为8.92cm,比育种群体平均高度增加35.9%;超级苗平均地径为3.50 mm,比育种群体平均地径增加3.6%.In order to explore the accordance and standard of selection in seedling stage of Pinus yunnanen- sis, we analyzed the growth character differences of annual seedlings on twenty families, that can speed up the ex- ploitation and utilization of the existing excellent genetic resources early and in short time ,The results showed that in both height and diameter growth aspects;there was very significant difference among families and different in- dividuals of the same family, height growth difference significantly greater than the one in diameter. So we select- ed superior seedling using the sum of average growth and standard deviation as the minimum standard. There were 1 629 plants to be selected in the 11 331 breeding population, the ratio is 14.3%. The mean height of the supe- rior seedlings is 8.92 cm, it is more than the average of mm.it is more than the average 3.6%. overall 35.9% , and the mean volume of diameter is 3.48

关 键 词：云南松 超级苗 生长差异 选择标准 

分 类 号：S722.33[农业科学—林木遗传育种]