辣椒种质色价及主要果实性状指标的聚类分析  

Cluster analysis of color value units and main fruit characters of red chili breeding resources

作　　者：杨志刚[1,2] 胡栓红[2] 王勇[2] 崔世茂[1] 付崇毅[2] 庞杰[2] 杨新宇[3] 刘燕[2] 

机构地区：[1]内蒙古农业大学农学院,内蒙古呼和浩特010019 [2]内蒙古农牧业科学院蔬菜研究所,内蒙古呼和浩特010031 [3]包头市农业技术推广站,内蒙古包头014010

出　　处：《西北农林科技大学学报（自然科学版）》2015年第5期149-155,共7页Journal of Northwest A&F University(Natural Science Edition)

基　　金：内蒙古科技厅应用与研究开发计划项目(20110711);内蒙古农牧业科技创新基金项目(2015CXJJN03);内蒙古农牧业科学院青年创新基金项目(2014QNJJN09);国家大宗蔬菜产业技术体系呼和浩特综合试验站项目(CARS-25-G-15)

摘　　要：【目的】评价辣椒资源材料果实的色价值及性状指标，为选育干制红辣椒提供参考。【方法】以92份辣椒资源为材料，分别对辣椒色价值和辣椒单果质量、果肉厚、果实横径、果实纵径进行聚类分析，从中筛选干制红辣椒的优良种质材料。【结果】（1）对辣椒色价值进行单一性状聚类分析，可以将92份辣椒资源分为5大组群，辣椒色价值为5.90～20.62，在不同材料中表现出多样性，但高色价值的材料仅有7份，所占比例较小（7.05%），且变异系数较大（0.54）。（2）对辣椒果实色价值、单果质量、果肉厚、果实横径和果实纵径5个性状指标进行聚类分析，可以将92份辣椒分为6大组群，各组群性状存在差异，性状表现丰富，单果质量为26.17～33.59 g，果肉厚为0.21～0.35 cm，果实横径为2.21～2.67 cm，果实纵径为13.30～16.65 cm。其中17份材料具有果肉薄（0.24 cm）、色价值高（18.11）、果型适中（横径2.38 cm，纵径15.71 cm，单果质量30.31 g）的特点，是选育干制红辣椒的优良材料。【结论】92份辣椒材料在色价值和果型指标等特征上表现出多样性，但色价值高、果型适宜作为干制红辣椒的资源材料所占比例仍然较小。【Objective】The color value units and fruit characters of red chili breeding resources were evaluated to provide reference for breeding new varieties.【Method】The color value units,fruit diameter,fruit length,fruit weight,and fruit wall thickness of 92 pepper breeding resources were evaluated with hierarchical cluster analysis for screening high quality breeding materials of dry chili.【Result】(1)The pepper breeding resources were divided into 5groups based on cluster analysis of color value units.Color value units of pepper were 5.90-20.62 with large diversity.But there were only 7with high color value units among all resource,with the ratio of 7.61% and large variation coefficient of 0.54.(2)The pepper breedingresources were divided into 6species groups based on cluster analysis on 5fruit characters.The characters of each group were different and the differences were abundant with the average fruit mass of 26.17-33.59 g,fruit wall thickness of 0.21-0.35 cm,fruit transverse diameter of 2.21-2.67 cm,and fruit vertical diameter of 13.30-16.65 cm.17materials were chosen as excellent resources for dry red pepper breading,which had the characteristics of thin fruit wall thickness(0.24cm),high color value units(18.11),and good fruit type(average fruit mass 30.31 g,fruit transverse diameter 2.38 cm,and fruit transverse diameter 15.71cm).【Conclusion】Pepper breeding resources showed great diversity in color value units and fruit characters,but the pepper resources with high color value units and suitable fruit type had small proportion.

关 键 词：辣椒 色价 果实性状 聚类分析 

分 类 号：S[农业科学]