SHAN Gaomeng,LI Xintong,LIU Peng,et al.Morphological Characteristics and Cold Tolerance Analysis of Ground Cover Chrysanthemums ‘Yannong Guiyou’ בYannong Maohua’ and Their Hybrids[J].Northern Horticulture,2026,(2):45-52.[doi:10.11937/bfyy.20251676]
地被菊‘延农贵有’ב延农茂华’杂交后代形态特征和耐寒性分析
- Title:
- Morphological Characteristics and Cold Tolerance Analysis of Ground Cover Chrysanthemums ‘Yannong Guiyou’ בYannong Maohua’ and Their Hybrids
- 文章编号:
- 1001-0009(2026)02-0045-08
- Keywords:
- ground cover chrysanthemum; hybrid; physiological; cold resistance
- 分类号:
- S682.11
- 文献标志码:
- A
- 摘要:
- 以地被菊‘延农贵有’为母本，‘延农茂华’‘延农寒香’‘延农傲雪’为父本进行杂交，采用形态学调查和耐寒特性分析，研究了低温胁迫对杂交后代的影响，以期为地被菊耐寒品种培育提供参考依据。结果表明：仅在‘延农贵有’ב延农茂华’组合中收获了种子。‘延农贵有’ב延农茂华’后代花色为黄色，株高、花序直径等性状显著高于亲本，茎粗、叶宽、管状花数等性状介于亲本之间。在0 ℃时，‘延农贵有’ב延农茂华’后代的相对电导率为70.1%，低于‘延农贵有’表现出了一定的抗寒性。低温处理后，测定父母本以及杂交后代的超氧化物歧化酶（SOD）活性、过氧化物酶（POD）活性、过氧化氢酶（CAT）活性和脯氨酸（Pro）含量发现，随温度降低呈上升趋势，杂交后代均高于母本‘延农贵有’，但低于父本。杂交后代的丙二醛（MDA）含量则低于‘延农贵有’。5 ℃时，杂交子代中CmICE和CmDREB的表达量分别是‘延农贵有’的1.95、2.35倍。
- Abstract:
- ‘Yannong Guiyou’ was used as the famale parent and ‘Yannong Maohua’‘Yannong Hanxiang’ and ‘Yannong Aoxue’ was used as the male parents for hybridization，the effects of low-temperature stress on the hybrid offspring were investigated through morphological investigation and cold resistance analysis，in order to provide reference for the breeding of cold-resistant ground cover chrysanthemums.The results showed that the flower color of the offspring from ‘Yannong Guiyou’בYannong Maohua’ was yellow，and the plant height，inflorescence diameter and other traits were significantly higher than those of the parents，while the stem diameter，leaf width，and number of tubular flowers were between the parents.At 0 ℃，the relative conductivity of the offspring from ‘Yannong Guiyou’בYannong Maohua’ was 70.1%，lower than that of ‘Yannong Guiyou’，indicating a certain degree of cold resistance.Further measurement of the activities of superoxide dismutase (SOD)，peroxidase (POD)，and catalase (CAT)，and the content of proline (Pro) in the parents and hybrid offspring revealed that they increased with the decrease in temperature，and the hybrid offspring were all higher than the female parent ‘Yannong Guiyou’，while the content of malondialdehyde (MDA) was lower than that of ‘Yannong Guiyou’.At 5 ℃，the expression levels of CmICE and CmDREB in the hybrid offspring were 1.95 times and 2.35 times that of ‘Yannong Guiyou’，respectively.
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备注/Memo
第一作者简介：单高梦 （1999-），女，硕士研究生，研究方向为菊花分子遗传育种。E-mail：13101788867@163.com.责任作者：高日 （1982-），男，博士，副教授，现主要从事菊花分子育种等研究工作。E-mail：gaori@ybu.edu.cn.基金项目：国家自然科学基金资助项目(32060696)；延边大学博士科研启动基金资助项目(2018)；吉林省教育厅科学技术研究资助项目(JJKH20220541KJ)。收稿日期：2025-05-07