| 不同月季品种灰霉病抗性鉴定及与表型相关性分析 |
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| 引用本文： | 李思思,韩洋琳,袁文斌,杨佳,李学,吴红芝.不同月季品种灰霉病抗性鉴定及与表型相关性分析[J].南方农业学报,2022,53(7):1925-1934. |
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| 作者姓名： | 李思思 韩洋琳 袁文斌 杨佳 李学 吴红芝 |
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| 作者单位： | 1 云南农业大学园林园艺学院, 云南昆明 650201;2 云南农业大学动物科学技术学院, 云南昆明 650201 |
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| 基金项目： | 国家重点研发计划项目（2018YFD1000407）；云南省重大科技专项（202102AE090001） |
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| 摘 要： | 【目的】鉴定不同月季资源的灰霉病抗性，分析月季灰霉病抗性与表型性状的相关性，为评估月季资源对灰霉病的抗性及月季灰霉病抗性育种提供支持。【方法】以349个月季主栽品种为研究对象，通过花瓣人工接种鉴定不同月季品种的灰霉病抗性，并结合2019和2020年连续2年的田间自然发病情况，对349个月季品种进行灰霉病抗性评价；结合349个月季品种花色、花径、茎皮刺量、花香和花瓣数5个表型性状，进行月季灰霉病抗性与表型性状的相关分析；选择抗病性品种进行聚类分析。【结果】通过连续2年田间调查结合花瓣人工接种结果，发现不同月季资源的抗病性存在较大差异，供试材料中未发现对灰霉病完全免疫的材料，大部分材料为感病品种。人工接种的抗病性结果与田间调查结果存在差异，349个品种中有187个品种评价结果一致，占53.58%，其中爱、费加罗夫人和帕蒂坦8个品种的人工接种结果与田间调查结果均为高抗，其病斑平均面积为22.9 mm2，病情指数（DI）均在15.6以下。月季资源的灰霉病病情指数与花色、花径、花瓣数和花香不存在显著相关关系（P>0.05），与茎皮刺量呈显著负相关（P<0.05）；聚类分析将107个抗病品种分为4大类群，第Ⅰ和第Ⅱ类群具有抗病性和花大、瓣型丰满等特征，具有较高的利用潜力。【结论】月季灰霉病抗性与茎皮刺量呈负相关，大部分供试月季资源易感灰霉病。筛选出朱红女王、黑巴克、金色星光、桔魅（朱红女王）、费加罗夫人、帕蒂坦、爱和辉煌8个高抗品种，可作为抗病育种优异备选材料。
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| 关 键 词： | 月季 灰霉病 抗性评价 表型性状 |
| 收稿时间： | 2021-12-13 |
Identification of gray mold resistance in different rose varieties and phenotype correlation analysis |
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| LI Si-si,HAN Yang-lin,YUAN Wen-bin,YANG Jia,LI Xue,WU Hong-zhi.Identification of gray mold resistance in different rose varieties and phenotype correlation analysis[J].Journal of Southern Agriculture,2022,53(7):1925-1934. |
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| Authors: | LI Si-si HAN Yang-lin YUAN Wen-bin YANG Jia LI Xue WU Hong-zhi |
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| Affiliation: | 1 College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, Yunnan 650201, China;2 College of Animal and Technology, Yunnan Agricultural University, Kunming, Yunnan 650201, Chin |
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| Abstract: | 【Objective】To identify the gray mold resistance of different rose resources, and to analyze the correlation between gray mold resistance and phenotypic traits of rose, so as to provide support for evaluating the gray mold resistance of rose resources and breeding new gray-mold-resistant varieties.【Method】Taking 349 main cultivated rose varieties as the research materials, the resistance of different rose varieties to gray mold was identified by petal inoculation and resistance evaluation of 349 rose varieties was conduct according to the natural incidence of gray mold in the field in 2019 and 2020. Five phenotypic traits including flower color, flower diameter, number of prickle thorns, floral fragrance and number of petals were investigated in 349 rose materials to carry out correlation analysis on rose gray mold resistance and phenotypic traits, and cluster analysis of the gray-mold-resistant varieties were conducted.【Result】Based on the results of two-year field investigation and petal inoculation, it was found that the disease resistance of different rose varieties was quite different, and no variety was completely immune to gray mold in the tested materials, and most of the varieties were susceptible. The resistance of the inoculated ones was different that field investigation:among the 349 varieties, the results of 187 varieties from both the artificial inoculation and field investigation was consistent, accounting for 53.58%, and they were 8 varieties such as Love, Madame Figaro, Perdita were with high resistance, and the average area of the disease lesion was 22.9 mm2, and the disease index(DI) was below 15.6. There was no significant correlation between the gray mold disease index of rose resources and flower color, flower diameter, number of petals, and floral fragrance (P>0.05), but a significant negative correlation with the number of prickle thorns(P<0.05);cluster analysis showed that 107 high-resistant varieties were divided into 4 major groups, and the varieties in group Ⅰ and group Ⅱ were potential for application because of their high resistance, large and full flowers.【Conclusion】The resistance of rose to gray mold is negatively correlated with the amount of stem bark. Most of the tested rose resources are susceptible to gray mold. Through a combination of field investigation and pathogen inoculation, 8 varieties with high resistance to gray mold, Scarlet queen Elizabeth, Black Bark, Golden starlight, Jumei, Madame Figaro, Perdita, Love and glory, were selected, which will be an important support for breeding new varieties with high resistance. |
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