摘要
[目的]对岑软3号苗木分级进行研究，进一步规范其出圃规格，提高苗木质量。[方法]以1年生的岑软3号嫁接苗为材料，测量其苗高、地径、叶片数等8个性状，利用主成分分析和逐步聚类分析法对苗木质量进行分级。[结果]28对性状组合中有22对存在（极）显著相关；主成分分析提取了前4个主成分，保留了82．8％的信息，地径、苗高、叶片数和上部鲜重为主要指标；逐步聚类将岑软3号苗木分成3类；确定其苗木分级：Ⅰ级苗的苗高H≥32．739 cm，地径D≥0．410 cm；Ⅱ级苗的苗高H≥20．666 cm，地径D≥0．323 cm。[结论]逐步聚类将岑软3号苗木分为3类，其中Ⅰ级苗5株，Ⅱ级苗29株，Ⅲ级苗38株。
Abstract
Objective]Seedling grading of the oil-tea cultivar Cenruan No.3 was studied to standardize planting specification ,improve the seed-ling’s quality.[Method]8 traits such as height, ground diameter,leaf number,etc.were measured based on the one-year old grafting seedlings of Cenruan No.3.Seedlings grading was carried out using the principal component analysis and clustering analysis .[ Result]The results indicated that 22 of 28 pairwise traits were (extremely) significant between 8 traits;4 principal component analysis were extractedwith 82.8%information. Height,ground diameter,leaf number and above fresh weight were major indices.The seedlings of Cenruan No.3 were divided into 3 groups by stepwise clustering;seedling grading was determined as following:Ⅰgrade H≥32.739 cm,D≥0.410 cm,Ⅱgrade H≥20.666 cm,D≥0.323 cm. [Conclusion]The seedlings of Cenruan No.3 were divided into 3 groups by stepwise clustering,Ⅰgrade 5 plants,Ⅱ grade29 plants,IIIgrade 38 plants.
基金项目
国家自然科学基金(31460208)
广西优良用材林资源培育重点实验室开放课题(12A0301)
广西优良用材林资源培育重点实验室自主课题(14－A－03－01)
广西北部湾海洋珍稀动物养护重点实验室项目(2016ZB02)
广西自然科学基金(2013GXNSFBA019104)
广西高校科学技术研究项目(2013YB252)
国家科技期刊平台
NSTL
维普
万方数据