小白菜抗黄曲条跳甲种质资源的抗虫性鉴定.pdf

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1、中国磨孝通报2015，31(16)：151—159ChineseAgriculturalScienceBulletin小白菜抗黄曲条跳甲种质资源的抗虫性鉴定周利琳，胡侦华，望勇，司升云，司越(武汉市蔬菜科学研究所，武汉430345)摘要：为了研究小白菜对黄曲条跳甲的抗虫性鉴定方法，采用田间自然鉴定法，参照小菜蛾危害分级标准，比较了黄曲条跳甲成虫为害48个品种小白菜的叶面积损失百分率。结果表明，现行的小菜蛾危害分级标准不适用于黄曲条跳甲成虫；进一步分析发现48个品种小白菜叶片的叶面积损失百分率与其叶片孔洞数显著正相关(0．354)，表明计数叶片受害孔洞

2、数可以用来鉴定小白菜对黄曲条跳甲成虫的抗虫性。为了创新小白菜对黄曲条跳甲的抗虫性种质资源，采用“叶片受害孔洞计数法”筛选了100个品种小白菜对黄曲条跳甲成虫的抗虫性，得到了5个相对抗虫品种(‘新矮青9’、‘新夏春3号’、‘918’、‘泰国种子一2’、‘夏冠’)和5个相对感虫品种(‘楚青325．6’、‘青优’、‘鸡毛菜’、‘12#耐抽苔青梗x668—1’、‘富士’)，5个相对抗虫品种孔洞数间均无差异，但均极显著低于5个相对感虫品种，这些材料为小白菜抗虫育种奠定了基础。关键词：小白菜；黄曲条跳甲；抗虫性中图分类号：$332．3文献标志码：A论文编号：20

3、14—2135InsectResistanceIdentificationofBrassicacampestrisL．ssp．chinens~GermplasmResourcestoPhyllotretastriolata(Fabricius)ZhouLilin，HuZhenhua，WangYong，SiShengyun，SiYue(WuhanInstituteofVegetablesScience，Wuhan430345)Abstract：InordertostudyinsectresistanceidentificationmethodofChi

4、nesecabbagetoPhyllotretastriolata(Fabricius)，basedonhazardclassificationstandardofdiamondbackmoth，te／／axylostella(L．)，thedefoliationpercentageof48Chinesecabbage[BrassicacampestrisL．ssp．chinensis(L．)Makino】varietiesinfectedbytheadultsofPstriolatawereestimatedbynaturalevaluationm

5、ethodinthefield．TheresultsshowedthatthecurrenthazardclassificationstandardofdiamondbackmothwasnotapplicabletoadultsofPstriolata．Furtheranalysisdemonstratedthatthedefoliationpercentageof48Chinesecabbagevarietieshadsignificantpositivecorelationwiththeholenumber(r=0。354)．Theseresu

6、ltssuggestedthatquantitystatisticsofinjuredholesincabbageleavescouldbeusedtoidentifyinsectresistanceofPstriolata．Moreover，inordertocultivateChinesecabbageanditsgermplasmresourceswithinsectresistance．100varietiesofChinesecabbagewereusedforidentificationofinsectresistancetoPstrio

7、lata．Fivekindsofcabbage(‘Xin’aiqing一9’，‘XinxiaehunNo．3’，918’，‘Thailandseed一2’，‘Xiaguan’1showedobviousresistanceandanotherfivekindsofcabbage(‘Chuqing325—6’，‘Qingyou’，‘Jimaocai’，‘12#boltingresistanceQinggeng×668一l’，‘Fuji’)wererelativelysusceptible．Nosignificantdifferencewasfounda

8、mongfiveresistantcabbagevarietiesonthenumbersofleaveho