摘要
为了筛选耐低钾的厚皮甜瓜品种(系),挖掘甜瓜自身吸收利用钾素的潜力,以河南省主栽品种(系)为主,收集45个甜瓜基因型,在人工气候室穴盘基质栽培条件下(适钾和低钾浓度分别为2.50、0.01 mmol/L)对甜瓜苗期主要农艺性状的差异及相关性进行分析,通过主成分分析和隶属函数法筛选耐低钾甜瓜品种(系).结果表明,45个供试品种(系)的11个农艺性状在适钾和低钾条件下变异系数均较大,除SPAD值、适钾水平下的茎粗外,变异系数均为10.0%以上;利用主成分分析方法将原11个农艺性状降维,提取出3个主成分,反映了原信息量的62.338%,钾累积量、株高、植株生物量、根系总吸收面积、根体积在第一主成分上有较高载荷值,SPAD值、叶面积在第二主成分上有较高载荷值,茎粗、根系活力、钾利用指数在第三主成分上有较高载荷值;利用聚类分析方法将45个甜瓜品种(系)划分为4类,Ⅰ类为耐低钾型品种(系),Ⅱ类为中耐低钾型品种(系),Ⅲ类为低钾弱敏感型品种(系),Ⅳ类为低钾敏感型品种(系).初步筛选出将军玉、锦绣、雪蜜、IVF168、丰蜜29、银蜜58等17个耐低钾品种(系),筛选出低钾敏感型品种(系)T120.
To screen the varieties(lines)of muskmelon with low potassium tolerance and explore the potential of muskmelon to absorb and utilize potassium by itself,45 different genotypes were collected from Henan main cultivars,and the differences and correlation of the main agronomic characters of muskmelon in seedling stage were analyzed with hole tray and substrate cultivation in phytotron(The suitable and low potassium concentrations were 2.50 mmol/L and 0.01 mmol/L,respectively),to select muskmelon varieties(lines)with low potassium tolerance by principal component analysis and membership function method.The results showed that the variation coefficients of 11 agronomic traits of 45 cultivars(lines)were large under the conditions of suitable potassium and low potassium,and all the variation coefficients reached more than 10.0%,except for SPAD value and stem diameter at the level of suitable potassium.The principal component analysis method reduced the dimension of the original 11 agronomic characters and extracted 3 principal components,reflecting 62.338%of the original information.The load values of K accumulation,plant height,plant biomass,total root absorption area and root volume were higher in the first principal component,SPAD value and leaf area were higher in the second principal component,and stem size,root activity and K utilization index were higher in the third principal component.45 melon varieties(lines)were divided into four types by clustering analysis method,typeⅠhad resistance to low potassium,typeⅡhad medium resistance to low potassium and typeⅢwas weakly sensitive varieties(lines)to low potassium,typeⅣwas low potassium sensitive varieties(lines).17 varieties(lines)with low potassium tolerance were preliminarily screened,such as Jangjunyu,Jinxiu,Xuemi,IVF168,Fengmi 29,Yinmi 58 and so on.T120 was selected as low potassium sensitive cultivar(line).
作者
康利允
常高正
马政华
李晓慧
高宁宁
梁慎
徐小利
李海伦
王慧颖
赵卫星
KANG Liyun;CHANG Gaozheng;MA Zhenghua;LI Xiaohui;GAO Ningning;LIANG Shen;XU Xiaoli;LI Hailun;WANG Huiying;ZHAO Weixing(Institute of Horticulture,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;Henan Academy of Agricultural Sciences,Zhengzhou 450002,China)
出处
《河南农业科学》
北大核心
2020年第3期113-120,共8页
Journal of Henan Agricultural Sciences
基金
国家现代农业产业技术体系建设专项(CARS-25)
河南省财政预算项目(2019CY017)
河南省农业科学院自主创新项目(2019ZC21)。
关键词
甜瓜
耐低钾基因型
农艺性状
主成分分析法
隶属函数法
Musk melon
Low potassium tolerant genolype
Agronomic characters
Principal component analysis
Membership function method
