CAJ | 학술논문

研究了甜瓜枯萎病菌的生物学特性,并对防治药剂进行了室内初步筛选.结果表明:菌丝生长的适宜温度范围为5～35 ℃,最适温度30 ℃,菌丝和孢子的致死温度为58 ℃;光暗交替条件下产孢量最大.生理生化特性测定结果表明:甜瓜枯萎病菌对孔雀石绿不敏感,对淀粉和硝态氮的利用能力强.采用生长速率法测定了9种杀菌剂对病菌的抑制作用,其中多菌灵和氟硅唑的毒力较高,EC_(50)分别为2.2671 mg/L和13.3418 mg/L.
연구료첨과고위병균적생물학특성,병대방치약제진행료실내초보사선.결과표명:균사생장적괄의온도범위위5～35 ℃,최괄온도30 ℃,균사화포자적치사온도위58 ℃;광암교체조건하산포량최대.생리생화특성측정결과표명:첨과고위병균대공작석록불민감,대정분화초태담적이용능력강.채용생장속솔법측정료9충살균제대병균적억제작용,기중다균령화불규서적독력교고,EC_(50)분별위2.2671 mg/L화13.3418 mg/L.
The biological characteristics of muskmelon fusarium pathogen were studied and the preliminary screening of fungicides was conducted in a laboratory.The results showed that the suitable temperature for the mycelial growth was 5～35 ℃ and the best was 30 ℃.The thermal death temperature of the mycelia and conidia was 58 ℃.Alternation of light and dark could promote the spore production.The tests for the biochemical characteristics showed that Fusarium oxysporum(Schl.)f.sp.melonis was insensitive to malachite green and could utilize starch and nitrate nitrogen.The tests for the inhibiting effects of 9 fungicides on F.oxysporum f.sp.melonis indicated that carbendazim and flusilazole were the highest in toxicity and their EC_(50) was 2.2671 mg/L and 13.3418 mg/L,respectively.