中国农学通报2025，Vol.41Issue(16)：51-61,11.
兰州百合和亚洲百合耐热性评价
Evaluation of Heat Tolerance of Lilium davidii var.unicolor and Lilium Asiatic Hybrids
摘要
Abstract
Highly heat-tolerant Lilium Asiatic hybrids can be used as breeding materials to improve heat tolerance and ornamental properties of L.davidii var.unicolor.L.davidii var.unicolor and 23 Lilium Asiatic hybrids were subjected to long-term natural heat stress in summer,and the heat damage index for each organ of the lilies was calculated.10 lilies with different levels of heat tolerance were subjected to short-term heat stress at 42℃for 18 h during the budding stage,and changes in the physiological indicators of leaves and buds were measured to comprehensively evaluate their heat tolerance.Under long-term natural heat stress,the heat damage index of each organ was analyzed using membership function and cluster analysis to select nine highly heat-tolerant germplasm:'Easy Whisper','Trendy San Fransico','Sugar Love','Tiny Double Dutch','Trendy Havana','Heart Strings','Corsage','Landini'and'Tiny Double You';11 moderately heat-tolerant germplasm:'Tiny Diamond','Secret Kiss','Red Twin','Tiny Icon','Orange Cocotte','Golden Matrix','Tiny Rocket','Tiny Moon','Matrix','Tiny Ghost'and'Trendy Dakota';and four lowly heat-tolerant germplasm:L.davidii var.unicolor,'Tiny Ink','Trendy Savannah'and'Tiny Comfort'.Under short-term heat stress during the budding stage,the leaves and buds of highly heat-tolerant germplasm showed relatively large increase in proline content and antioxidant enzyme(superoxide dismutase,peroxidase,catalase)activities,relatively small increase in hydrogen peroxide content,and varying extent of increase in relative electrical conductivity.The short-term simulated high-temperature heat tolerance evaluation based on the results of principal component analysis,membership function,and cluster analysis was basically consistent with the results of long-term heat stress evaluation.Comparisons indicated that the long-term natural high-temperature heat tolerance evaluation was relatively comprehensive and accurate and was in line with production practice.The short-term simulated high-temperature evaluation reflected the stress response of plant when exposed to high temperatures and partially reflected their true heat tolerance.关键词
兰州百合/亚洲百合/耐热性/热害指数/生理指标/主成分/隶属函数/聚类分析Key words
Lilium davidii var.unicolor/Lilium Asiatic hybrids/heat tolerance/heat damage index/physiological indexes/principal component/membership function/cluster analysis分类
农业科技引用本文复制引用
李心,吴若楠,张永春,王桢,陈敏敏,杨柳燕..兰州百合和亚洲百合耐热性评价[J].中国农学通报,2025,41(16):51-61,11.基金项目
上海市科技创新行动计划"采用细胞融合系列技术培育赏食兼用百合耐热新品系"(22N11900300). （22N11900300）
