中抗青枯病新品种云烟12的选育及特征特性

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中图分类号：S572.033

文献标识码：A

文章编号：1007-119（2026）01-0001-06

Abstract：Tenewflue-curedtobaccovarietyYunyanl25，whichismoderatelyresistant tobacterialwilt，wasbedwiththepriary objectiveofenhancingthisresistance，usingOxford2O7（resistanttobacterialwilt）asthepateralparentandYunyan97asthe maternalparent.This varietywasapprovedbytheNationalTbacco VarietyApprovalCommiteein024.Thevarietyexhiitsdark gren leaves， vigorous growth， and wel-expanded leaves.The average plant height after topping is 113.9cm ，with19.0harvestable leaves. The mid-leaves measure 74.1cm in length and 32.0cm in width. The stem circumference averages 9.9cm ，with an internode distance of 5.7cm .The average yield of Yunyan125 is 171.3kg/（666.7m2） ， with an output value of 4995.4yuan/（666.7m2） . The average price is29.1 yuan/kg. The proportion of high-grade leaf is 60.4% ，and the combined proportion of high- and medium-grade leaf is 91.6% It exhibitsmoderateresistancetobacterial wilt，black shank，androot-knotnematodedisease.Itsresistancelevel to bacterial wiltiscomparabletohatoftereferencevarietyK326.Inthefield，itsowslayeredyellowingandiseasytocure.The conventionalchemicalcomponentsofthecuredtobaccofallwithinthedesirablerange，demonstratingwell-balanced.Itscured tobacco appearance and sensoryquality are comparable to thoseof Yunyan87. Yunyan125is wel-suitedforcultivation in the southwestern tobacco regionofChina，and is particularlyrecommended for fields severelyafected bybacterial wilt.

Keywords： flue-cured tobacco; bacterial wilt; resistance

烟草青枯病（Bacterialwilt）是由青枯雷尔氏菌Ralstoniasolanacearum引起的土传病害[1]，1880 年首次发现于美国北卡罗来纳州，在世界上所有烤烟种植区几乎都有分布，在我国长江以南烟区普遍发生，为害较重的地区有广东、广西、福建、湖南、湖北、四川、贵州、云南等，个别年份暴发流行，

造成毁灭性损失[2]。（剩余7847字）