山西农业大学学报（自然科学版）2025，Vol.45Issue(6)：69-78,10.DOI:10.13842/j.cnki.issn1671-8151.202502002
6个仙客来品系叶片结构特征与耐热性综合评价
Comprehensive evaluation of leaf structural characteristics and heat tolerance in six Cyclamen persicum lines
摘要
Abstract
[Objective]Cyclamen is a major potted flower with significant market demand globally.It thrives in cool climates,but recent climate change has led to increased production cost and a decline in product quality.Selecting heat-tolerant C.persi-cum varieties is of great significance for overcoming developmental constraints in the industry.[Methods]Six C.persicum lines,including'Halios 2015','Halios 2090','Fleur in Vogue','Yoshino(Purple-White)','Sierra',and'Halios Blush',were used as test materials.Thirteen leaf structural traits,including leaf area,upper epidermis thickness,and spongy tissue thickness,were measured after the summer period.Main indexes for heat-tolerance evaluation were identified using cluster and correlation anal-ysis.The average membership function method was then applied to comprehensively assess and rank the heat-tolerance of the C.persicum lines.[Results]The mean leaf area,leaf length,and leaf width of the six C.persicum lines were 39.43 cm²,6.50 cm,and 7.08 cm,respectively,with leaf area showing the highest coefficient of variation(10.97%).Anatomical analysis revealed that'Sierra'exhibited the largest values for sieve tube diameter,tissue compactness,and palisade-spongy ratio,while'Yoshino(Purple-White)'had the highest values for leaf thickness and upper/lower epidermis thickness.In contrast,'Halios 2090'showed the smallest values for palisade tissue thickness and sieve tube diameter.Cluster and correlation analysis categorized the 13 leaf structural characteristic indexes into five groups,from which five key traits were identified as representative of heat toler-ance:leaf thickness,palisade-spongy ratio,palisade tissue thickness,leaf area,and tissue looseness.Based on the member-ship function evaluation,the heat tolerance of the six C.persicum lines was ranked in descending order as follows:Sierra>'Yo-shino(Purple-White)'>'Halios 2015'>'Fleur in Vogue'>'Halios Blush'>'Halios 2090'.[Conclusion]This study demonstrat-ed the feasibility of using leaf structural characteristics to comprehensively evaluate heat tolerance in C.persicum.The approach provides a scientific and efficient methodology for assessing heat-tolerance,and offers valuable insights for the selection of heat-tolerant C.persicum germplasms and the breeding of new resilient varieties.关键词
仙客来/耐热性/叶片结构/综合评价Key words
Cyclamen persicum/Heat resistance/Leaf structure/Comprehensive evaluation分类
农业科技引用本文复制引用
张晓飞,李金霞,吕峰,董梦宇,路晓月,赵丽红,刘素素..6个仙客来品系叶片结构特征与耐热性综合评价[J].山西农业大学学报（自然科学版）,2025,45(6):69-78,10.基金项目
中央引导地方科技发展资金项目(自由探索类基础研究)(246Z6308G) （自由探索类基础研究）
河北省科技厅现代种业科技创新专项(21326317D) （21326317D）
