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1、觀賞南瓜病毒病抗性鑒定及抗源材料篩選摘要:以觀賞南瓜詁種迷彩果(CucurbitapepoL.var.kintogaMak.cv.Micaiguo)為研究對(duì)象,釆用苗期人工接種方法,研究了接種時(shí)期、接種量、培養(yǎng)溫度、接種方法等因素對(duì)觀賞南瓜病毒病發(fā)病情況的影響,確定觀賞南瓜病毒病苗期抗性鑒定的最適條件。結(jié)果表明,接種時(shí)期為1片真葉期、接種量為1mg/L.培養(yǎng)溫度為30°C、接種方法為汁液摩擦接種法時(shí)可獲得最高的病情指數(shù),接種效果最佳;采用上述最佳接種條件對(duì)11個(gè)觀賞南瓜品種進(jìn)行了苗期病毒病抗性鑒定,篩選出了高抗品種太陽(yáng)果(C.pepovar.kintogacv.T
2、aiyangguo)>抗病品種紅栗瓜(CucurbitamaximaDuch.cv.liongligua)和大鈴鐺(C?pepovar.kintogacv.Dalingdang)3份抗源材料。關(guān)鍵詞:觀賞南瓜;病毒病;抗性鑒定;抗源篩選中圖分類號(hào):S642.1;S432.4+2;S432.2文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):0439-8114(2013)12-2836-03ResistanceIdentificationandSelectionofResistantMaterialsAgainstVirusDiseaseofOrnamentalPumpkinFUHong-b
3、ing,ZHAOYin-ping(DepartmentofLifeSciences,Xi'anUniversityofArtsandScience,Xi'an710065,China)Abstract:TakingornamentalpumpkinvarietyCucurbitapepoL.var.kintogaMak.cv.Micaiguoasresearchmaterial,effectsofinoculationperiod,inoculumdensity,inoculationtemperatureandinoculationmethodsontheinc
4、idenceofornamentalpumpkinvirusdiseasewerestudiedbyartificialinoculationatseedlingstagetoobtaintheoptimalconditionsforresistanceidentificationofornamentalpumpkinagainstvirusdisease.Theresultsshowedthatthehighestdiseaseindexandbestinoculationeffectofvirusdiseasecouldbeobtainedifvaccinat
5、ionwasatone-leafperiod;inoculumdensitywas1mg/L;inoculationtemperaturewas30°C;andinoculationmethodwasjuicefrictioninoculation.Usingtheinoculationconditions,seedlingresistanceidentificationof11ornamentalpumpkinvarietiesagainstvirusdiseasewasconducted.Asaresult,3resistantmaterialsagainst
6、virusdiseasewerescreenedout,amongwhichC.pepovar.kintogacv.Taiyangguowasidentifiedashighresistance;whileC.maximaDuch?cv.HongliguaandC.pepovar.kintogacv.Dalingdangwereidentifiedasdisease-resistantvarieties.Keywords:ornamentalpumpkin;virusdisease;resistanceidentification;selectionofresis
7、tantmaterials觀賞南瓜屬葫蘆科(Cucurbitaceae)南瓜屬(CucurbitaL.)一年生蔓生草本植物,是南瓜屬中一個(gè)特殊類群[1],主要包括3種植物,①中國(guó)南瓜(C.moschataDuch.exPoir),又名倭瓜;②印度南瓜(C.maximaDuch.),又名筍瓜;③美洲南瓜(C.pepoL.),又名西葫蘆;以美洲南瓜居多,所以觀賞南瓜的學(xué)名以CucurbitapepoL.var.kintogaMak.表述而多見(jiàn)。觀賞南瓜屬于栽培南瓜的變種,是以果實(shí)器官作為觀賞對(duì)象的,其果實(shí)大多色彩艷麗,有白、黃、橙、綠等多種顏色,同一果實(shí)其至還可表現(xiàn)出
8、雙色和多色