西南林业大学学报2025，Vol.45Issue(9)：1-7,7.DOI:10.11929/j.swfu.202406059
桂林地区香花油茶优良单株性状及耐寒性评价
Evaluation of Excellent Individual Plant Traits and Cold Tolerance of Camellia osmantha in Guilin Area
摘要
Abstract
In order to screen out the excellent single plant of Camellia osmantha with strong cold resistance suitable for planting in Guilin area of Guangxi,the excellent plants were selected in Lingchuan County of Guilin,and the fruit economic characters and cold resistance of the excellent plants were evaluated.After natural low tem-perature(below 0 ℃)stress,the relative conductivity(REC),malondialdehyde(MDA)content,peroxidase(POD)activity,catalase(CAT)activity,soluble sugar(SS)content,chlorophyll content,chlorophyll b content,comprehensive chlorophyll content and free proline(PRO)content of the selected superior individuals were determined.Based on principal component analysis and cluster analysis,the phenotypic characteristics and cold tolerance of superior plants were comprehensively evaluated.The results showed that there were signi-ficant differences in phenotype and cold tolerance among superior plants,and there were significant differences in single fruit weight,seed number,fresh seed rate,thousand seed weight and fruit shape index among single plants,among which MJ2206 was a large seed type.The difference of POD activity,CAT activity and PRO content among individual plants was extremely significant,and the difference of REC was significant.The difference of malondialdehyde(MDA)content,soluble sugar(SS)content,chlorophyll content,chlorophyll b content and comprehensive chlorophyll content was not significant.According to the results,the superior plants MJ2205,MJ2207 and MJ2216 with better fruit economic traits and strong cold tolerance were selected.关键词
香花油茶/优良单株/低温胁迫/综合评价Key words
Camellia osmantha/excellent individual plant/low temperature stress/comprehensive evaluation分类
农业科技引用本文复制引用
蔡娅,李月娟,莫小锋,陈江平,陈梦秋,王东雪..桂林地区香花油茶优良单株性状及耐寒性评价[J].西南林业大学学报,2025,45(9):1-7,7.基金项目
广西特色经济林培育与利用重点实验室课题资助项目(JA-22-01-01)资助 （JA-22-01-01）
中央引导地方科技发展资金项目(20230403)资助. （20230403）
