| 摘要: |
| 乐东拟单性木兰是优良的园林绿化和珍贵用材树种。2006年10月，收集湖南长沙12个和江西7个优良单株(家系)种子进行苗木培育试验。结果表明：乐东拟单性木兰种子千粒重在84.75～187.1g之间，平均千粒重为132.1g，湘10最重。始发天数在18～87d之间，平均始发天数为27d，以湘11最长，赣1、赣3和赣6最短。场圃发芽率在43.6%～75.6%之间，平均场圃发芽率为56.16%，湘2最高，赣5最低，最高家系比最低家系的场圃发芽率高32%。出苗期在84～136d之间，平均出苗期为113d，湘11最长，湘8最短，最长家系出苗期是比最短的多52d。苗木保存率在69.23%～93.6%之间，平均保存率86.22%，湘7最高，赣4和赣6最低；湘种源家系保存率86%，赣种源家系保存率74.29%。高生长在11.1～19.5cm 之间，平均苗木高14.5cm，湘7最高，赣7最低；湘种源平均苗高15.3cm，赣种源家系平均苗高为11.2cm，湘种源家系平均苗高比赣种源高36.6%。聚类分析19个家系可分为5类，综合评价以第1类即湘1、湘2、湘3、湘5、湘6、湘7、湘8、湘9、湘12家系最优，且湘种源明显好于赣种源。
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| 关键词: 乐东拟单性木兰 种源与家系 播种 场圃发芽率 |
| DOI： |
| 分类号: |
| 基金项目:广东省林业科技计划项目“广东优良木本花卉资源收集与利用研究”。 |
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| Study on Sowing Nursery of Provenance and Family for |
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Zhu Baozhu
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| Abstract: |
| Parakmeria lotungensis (Chun & C. Tsoong)Y. W. Law is a good species for landscaping and precious timber tree.12 excellent individual(family) seeds which were collected from Hunan Changsha and 7 from Jiangxi were tested by sowing nursery, the results were as follows：one thousand weight was among 84.75～187.1g.The average of one thousand seed weight was 132.1g,and Xiang-10 was the biggest.The number of days of the beginning of seeds sprout was among 18～87d.The average number of days of the beginning of seeds sprout was 27 days among which Xiang-11 was the longest,and Gan-1,Gan-3,Gan-6 were relatively shorter.The germination percentage was among 43.6%～75.6%,and the mean germination percentage was 56.16%,among which Xiang-2 was the highest and Gan-5 the lowest.The highest germination precentage was 32% more compared with the lowest.The seeding stage was among 84～136d,and the average seeding stage was 113d,among which Xiang-11 was the longest and Xiang-8 the shortest.The longest seeding stage was 52days more than the shortest.The seeding survival rate was among 69.23%～93.6%，and the mean rate was 86.22%,among which Xiang-7 was the highest and Gan-4,Gan-6 were reatively lower. The individual surividual rate of Xiang provenance was 86% and Gan was 74.29%.The height growth was among 11.1～19.5cm,and the average height growth is 14.5cm, among which Xiang-7 was the biggest and Gan-7 the smallest. The average height of Xiang provenance was 15.3cm and Gan provenance 11.2cm. The average height of Xiang provenance was 36.6% higher than Gan provenance.The results of clusering analysis fell into five categories，seeds of familes of Xiang-1、Xiang-2、Xiang-5、Xiang-6、Xiang-7、Xiang-8、Xiang-9、Xiang-12 were fine quality by overall evaluation．What’s more, Xiang provenance was obvisiously better than Gan.
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| Key words: Parakmeria lotungensis (Chun & C. Tsoong)Y. W. Law ,provenance and family,sowing,germ ination percentage |
