寒地玉米自交系抗瘤黑粉病精准鉴定及抗性遗传分析

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关键词玉米自交系；瘤黑粉病；精准鉴定；抗性评价；遗传分析

中图分类号S513文献标识码A

文章编号 0517-6611（2025）17-0010-04

doi：10.3969/j.issn.0517-6611.2025.17. 003

开放科学（资源服务）标识码（OSID）：

Precise Identification of Maize Inbred Lines in Cold Region Resistance to Common Smut and Analysis of Resistance Genetics

JU Hong-feng，CHENG Shan-bin，LIHua-qing etal（Biocentury Transgene（China）Co.，Ltd.，Shenzhen，Guangdong 518017）

AbstractObjective]Toexplorethetrueresistanceofmaizegermplasmresources tocommonsmut.[Method]Newmaize inbredlinswere preciselydentifidandevaluatedforresistancetocommonsutbyusingartfialinoulationmetodsforonsecutiveyearsTeeticlaw of resistance of highly resistant materials was preliminarily analyzed through the segregation ratio analysis of the F2 population and adaptability testsof indialsistantdsitieplatResul]totalofstaeateasfaidlsresreedig for 62.5% ofthetotalidentifiedmaterials，mong which，6materalswerehighlyresistant，9materalswre mediumresistantand5materials were resistant to common smut. A total of 12 sensitive materials were screened，accounting for 37.5% of the total identified materials.Genetic analysisfresistaceofglsistaeateralstecomonsutsdutaoingtoeseparationratiodsabiltyf resistant and susceptible plants by using F2 population. The results showed that resistance of Z17HEB-82、Z17HEB-93、Z17HEB-100 and Z17HEB-07ibredlinestoUstlgozeaemaybecontroledbyonepairofdominantsinglegene.Conclusion]heresultscanprovidepor tant references forthe introduction and utilization of maize common smut resistant germplasm inthe future in China.

Key WordsMaize inbred line;Common smut;Precision identification;Resistance evaluation;Genetic analysis

玉米瘤黑粉病在世界各玉米产区均有不同程度的发生，其病原为玉蜀黍黑粉菌［Ustilago zeae（Beckm.）unger]，可通过土壤、气流和种子传播。（剩余9129字）