WANG Dong-mei,ZHANG Yan-dong,FENG Xiao-fei,et al.Evaluation and Analysis of Resistance to Anthracnose ofGrafted Seedlings of 11 Walnut Cultivars[J].HEILONGJIANG AGRICULTURAL SCIENCES,2022,(10):55-61.[doi:10.11942/j.issn1002-2767.2022.10.0055]
11个核桃品种嫁接苗对炭疽病的抗性评价与分析
- Title:
- Evaluation and Analysis of Resistance to Anthracnose ofGrafted Seedlings of 11 Walnut Cultivars
- 文献标志码:
- A
- 摘要:
- 筛选出云南地区抗炭疽病的优良核桃品种,以11个云南主栽核桃品种1 年生苗(嫁接苗)为研究对象,采用田间活体叶片接种的方法,研究了11个核桃品种对胶孢炭疽菌的抗性。结果表明,接种后第8天,‘圆菠萝’和‘大泡’品种病斑面积较小,分别为0.42和0.55 mm2,且发病率均小于10%;‘云新14’和‘铁核桃’病斑面积较大,分别为3.53和3.23 mm2,二者发病率均大于75%。通过抗性分级和聚类分析,将11个核桃品种划分为2个抗病品种、2个中抗品种、3个中感品种、4个感病品种,即‘圆菠萝’和‘大泡’为抗病品种,‘新疆核桃’和‘桐子果’为中抗品种,‘三台’‘龙佳’和‘娘青’为中感品种,‘云新227’‘云新306’‘云新14’和‘铁核桃’为感病品种。
- Abstract:
- In order to screen excellent walnut cultivars resistant to anthracnose in Yunan, the 1-year-old seedlings (grafted seedlings) of 11 main walnut cultivars in Yunnan were used as research objects, the disease resistance of 11 walnut cultivars to Colletotrichum gloeosporioides was studied by inoculating leaves in the field. The results showed that the disease spot areas of ‘Yuanboluo’ and ‘Dapao’ were smaller,which were 0.42 and 055 mm2 respectively on the 8th day after inocalation, and the incidence rates were both less than 10%; Meanwhile, the lesion areas of ‘Yunxin 14’ and ‘Iron Walnut’ were larger, which were 3.53 and 3.23 mm2 respectively, the incidence of both were greater than 75%. The mean area of disease spot was analyzed by resistance classification and cluster analysis, 11 walnut cultivars were divided into 2 resistant cultivars, 2 moderately resistant cultivars, 3 moderately susceptible cultivars and 4 susceptible cultivars, namely, ‘Yuanboluo’ and ‘Dapao’ are resistant, ‘Xinjiang Walnut’ and ‘Tongziguo’ are moderately resistant, ‘Santai’ ‘Longjia’ and ‘Niangqing’ are moderately susceptible, and ‘Yunxin 227’‘Yunxin 306’‘Yunxin 14’ and ‘Iron Walnut’ are the susceptible cultivars.
参考文献/References:
[1]时丕坤,宗殿龙.核桃炭疽病发生规律及防治措施[J].河北果树,2017(5):35.
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备注/Memo
收稿日期:2022-08-01