基于高温半致死温度的13个牡丹品种耐热性评价
Evaluation of heat resistance of 13 tree peony varieties based on semi-lethal high temperature
余昕 1陈法志 1刘忠 1陈志伟 1戢小梅 1李秀丽1
作者信息
- 1. 武汉市农业科学院林业果树研究所,武汉 430075
- 折叠
摘要
以13个代表性牡丹(Paeonia suffruticosa Andr.)品种为试材,利用电导率法、Logistic方程研究高温半致死温度(LT50),以期评价牡丹种质资源的耐热性.结果表明,在逐步高温处理过程中,13个牡丹品种的细胞伤害率呈典型的S形曲线增长趋势,经显著性检验符合Logistic方程.13个牡丹品种的LT50为51.31～59.73℃,其中B24的LT50最高,为59.73℃,而海黄的LT50最低,为51.31℃.利用有序样品最优分割聚类法,将13个牡丹品种分为3个类群,B24、太平红、B10、凤丹荷和凤丹白属于耐热类型,LT50平均值为57.70℃;香玉、莲鹤、五星玉、岛锦和垫江红属于中度耐热类型,LT50平均值为56.32℃;ZB1、泼墨紫和海黄属于不耐热类型,LT50平均值为53.32℃.
Abstract
In order to evaluate the heat resistance of tree peony(Paeonia suffruticosa Andr.)germplasm resources,13 representative tree peony cultivars were selected as experimental materials,and the semi-lethal high temperature(LT50)was studied by the conduc-tivity method and Logistic equation.The results showed that with the treating temperatures higher step-by-step,the cell damage rate of 13 tree peony cultivars showed a typical S curve increasing trend,and the significance test conformed to the Logistic equation.The LT50 of 13 tree peony cultivars ranged from 51.31℃to 59.73℃,among which B24 had the highest LT50 of 59.73℃,while Haihuang had the lowest LT50 of 51.31℃.Based on sequential clustering method,13 tree peony cultivars could be divided into 3 groups:B24,Taipinghong,B10,Fengdanhe and Fengdanbai belonged to the heat resistant type,with an average LT50 of 57.70℃;Xiangyu,Lian-he,Wuxingyu,Daojin and Dianjianghong belonged to the moderate heat resistant type,with an average LT50 of 56.32℃;ZB1,Po-mozi and Haihuang belonged to the heat sensitive type,with an average LT50 of 53.32℃.
关键词
牡丹(Paeonia/suffruticosa/Andr.)/细胞伤害率/Logistic方程/高温半致死温度/耐热性Key words
tree peony(Paeonia suffruticosa Andr.)/cell damage rate/Logistic equation/semi-lethal high temperature/heat resis-tance引用本文复制引用
基金项目
湖北省自然科学基金青年基金(2019CFB351)
湖北省技术创新专项重大项目(农业领域)(2018ABA073)
中央引导地方科技发展专项(2022BGE228)
出版年
2024
NETL
NSTL
万方数据