【摘要】 以混合家系为对照,对云南松12个种源78个家系的苗高和地径生长性状进行了测定与分析。结果表明:不同种源、家系与混合家系间的苗高和地径生长差异显著,其中表现最好的是云南石屏种源,其次为云南宜良、弥渡、禄丰和四川德昌种源,表现最差的是四川盐边种源;参试家系苗高生长量表现最好的是石屏龙朋45号家系,地径生长量表现最好的是石屏龙朋52号家系;苗期综合表现较好的家系有17个,分别是3、4、22、23、41、45、47、51、52、54、55、65、67、73、74、78、80号家系和混合家系;采用不同种源苗木地径和苗高进行逐步聚类分析,12个种源可分为5类,根据各种源苗期地径、苗高的生长状况,初步筛选出云南石屏种源高径生长均最好,云南腾冲、弥渡、禄丰、宜良和四川德昌种源生长次之。更多还原

【Abstract】 The height and basal diameter of Pinus yunnanensis seedlings of 12 provenances,78 families and the mixed family were measured and analyzed. The results showed that there were significant differences on height and diameter growth among provenances and families. At the provenance level,Shiping provenance of Yunnan was the best,next came Yiliang of Yunnan,Midu of Yunnan,Dechang of Sichuan and Lufeng of Yunnan,whereas the seedling growing performance of Yanbian of Sichuan was the worst. Evaluating at the family level,the families with the best performance in height growth and diameter growth were Longpeng No.45 and Longpeng No. 52 respectively,all belonging to Shiping provenance of Yunnan. Taken together,there were 17 families with promising performance at seedling stage,they were No. 3,4,22,23,41,45,47,51,52,54,55,65,67,73,74,78 and 80. Moreover,the performance of the mixed family was also good. Conducting cluster analysis based on the height and basal diameter of seedlings belonging to differentprovenances,12 tested provenances could be classified into 5 groups,Shiping of Yunnan was preliminarily screened out to be the best provenance,next came to Tengchong of Yunnan,Midu of Yunnan,Dechang of Yunnan,Lufeng of Yunnan,Yiliang of Yunnan.更多还原