摘要
南方坡耕地土壤大部分较贫瘠,筛选出适合在丘陵坡地贫瘠土壤种植的苎麻种质,对于生态恢复和经济生产非常重要。本研究将田间平地试验、田间坡地试验、盆栽试验相结合,以10个苎麻种质为材料,测定株高、分株数、叶片数、叶面积、叶片SPAD、总鲜重、总干重、原麻重、氮肥利用效率、钾肥利用效率等10个指标,运用主成分分析、隶属函数、聚类分析方法,对筛选指标和抗性分类进行综合分析。通过主成分分析筛选出分株数、总鲜重、叶面积、株高、叶片SPAD、叶片数、氮肥利用效率、钾肥利用效率等8个指标可以有效的评价苎麻耐瘠性;对各性状隶属函数进行聚类分析,10个苎麻种质可划分为两类,一类是冷水江野麻、浏阳野麻;另一类是湘苎三号、多倍体一号、湘苎X2、湘苎X1、湘苎X3、湘苎XB、中苎一号、长沙野麻。通过研究苎麻耐瘠相关指标,建立了苎麻耐瘠性评价的指标体系,筛选和鉴定出了苎麻耐瘠性资源。
It is very important to identification and evaluation of ramie germplasms resistant to barren land for ecological restoration and economic production on barren land a mountain slope. In this study,the poor-soil-fertility tolerance of ramie was tested by cultivated 10 ramie germplasms in the flatland, slopeland and pot. The plant height, tiller number,leaf number, leaf area, leaf SPAD, total fresh weight, total dry weight, fiber weight, nitrogen use efficiency, potassium fertilizer use efficiency were evaluation indicators. The index and classification of poor-soil-fer- tility tolerance were comprehensively analysised using principal component analysis,membership functionand cluster analysis. Evaluation index of poor-soil-fertility tolerance can be done by tiller number, total fresh weight, leaf area, leaf SPAD value,leaf number,nitrogen use efficiency and potassium fertilizer use efficiency. Membership function of each character were analysised, 10 ramie varieties can be divided into two kinds, the stronger poor-soil-fertility tolerance germplasm were Lengshuijiangyema, Liuyangyema; The weaker poor-soil-fertility tolerance germplasm were Xiangzhu-3, Tri-1, Xiangzhu X2, Xiangzhu X1, Xiangzhu X3, Xiangzhu XB, Zhongzhu-1, and Changshayema. The evaluation index of poor-soil-fertility tolerance was established in ramie. And the ramie germplasms with higher poor-soil-fertility tolerance was screened and identificated.
出处
《植物遗传资源学报》
CAS
CSCD
北大核心
2012年第6期1023-1030,共8页
Journal of Plant Genetic Resources
基金
湖南省科技厅重点项目(2010TP4004-1)
关键词
苎麻
耐瘠性
主成分分析
隶属函数
鉴定评价
Ramie
Poor-soil-fertility tolerance
Principal component analysis
Membership function
Identi- fication and evaluation
