菊花扦插生根能力的量化评价  

Quantitative Evaluation on Rooting Capacity for Cutting Propagation of Chrysanthemum

作　　者：孙炜 于瑞宁 张飞 蒋甲福 陈发棣 房伟民 SUN Wei;YU Ruining;ZHANG Fei;JIANG Jiafu;CHEN Fadi;FANG Weimin(State Key Laboratory of Crop Genetics and Germplasm Enhancement,Key Laboratory of Landscape Design,Ministry of Agriculture,College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China)

机构地区：[1]南京农业大学园艺学院作物遗传与种质创新国家重点实验室农业部景观设计重点实验室,南京210095

出　　处：《园艺学报》2019年第3期540-548,共9页Acta Horticulturae Sinica

基　　金：国家自然科学基金项目(31372092);江苏省农业科技自主创新资金项目(CX[16]1025);江苏省农业三新工程项目(SXGC[2017]280)

摘　　要：测定了51个菊花品种插穗扦插12 d后的根数、平均根长、根粗、最长根长、根表面积、根投影面积和平均单根根尖数,对这7个形态指标进行相关性和主成分分析,采用隶属函数法对扦插苗的生根能力进行综合评价。结果表明:不同菊花品种的根数、平均根长、平均单根根尖数和最长根长的差异较大,但平均根粗、根表面积和根投影面积差异较小。主成分分析将7个单项指标转换成2个相互独立的因子,累积贡献率为84.01%。隶属函数法计算扦插苗生根能力的综合指标值、隶属函数值和综合得分后发现,综合得分值主要集中在0.20～0.40之间,共有23个品种,占总数的45.1%;综合得分值≥0.40的5个品种均为盆栽小菊,其中最大的‘钟山云歌’为0.88,生根能力最强;综合得分值≤0.10共10个品种,其中6个为传统秋菊,最小的‘国华由季’和‘国华八十祝’仅为0.03,生根能力最弱。A total of 7 indexes in 51 chrysanthemum cultivars were identified after 12 days,including root number,average single length(L),average diameter(AD),the longest root length,root surface area(SA),root projected area(PA)and the average number of single root tips(N Tips). Base on the above statics,the rooting ability of different ornamental chrysanthemum cultivars were evaluated by the correlation and principal component of the 7 indexes and the subordinate function value method.Comparing with the longest root length,the extreme value of these materials showed significant differences of the distribution range in root number,L,N Tips,while the distribution range in AD,SA and PA showed no difference. There is a significant correlation among these indexes(P < 0.01)with all positively correlated. In addition,seven single items were translated into the two independent comprehensive indexes by the principal component analysis,and the cumulative contribution rate was84.01%. Furthermore,the comprehensive index,subordinate function values and the Score(D)were calculated by the subordinate function value method,the results showed that D values were mainly concentrated between 0.20 and 0.40,and there were 23 cultivars,accounting for 45.1% of the total;five potted chrysanthemum cultivars whose D value were more than 0.40,among of them,the highest was‘Zhongshan Yunge’with 0.88 with the strongest rooting ability of cutting. There were 10 cultivars with the value less than or equal to 0.10,among which 6 were traditional chrysanthemum,the lowest‘Guohua Youji’and‘Guohua Bashizhu’were only 0.03,and the rooting ability was the weakest.

关 键 词：菊花 插穗 生根 主成分分析 隶属函数法 量化评价 

分 类 号：S682.11[农业科学—观赏园艺]