摘要
为了提高海洋拮抗酵母Rhodosporidium paludigenum的生防效果,研究该酵母与不同浓度碳酸氢钠(NaHCO3)和尼泊金酯钠盐配合使用对冬枣果实采后黑斑病(Alternaria alternata)的防治效果,以及碳酸氢钠和尼泊金酯钠盐对R.paludigenum酵母生长的影响.体内(invivo)、体外(invitro)试验结果表明,不同浓度的碳酸氢钠和尼泊金酯钠盐对R.paludigenum的生长均没有影响.同时,碳酸氢钠和尼泊金酯钠盐对酵母菌在冬枣果实伤口上的生长也没有抑制作用.但当R.paludigenum与0.3%NaHCO3、0.012‰(W/V)尼泊金乙酯钠或尼泊金丁酯钠溶液结合使用时可显著抑制冬枣果实黑斑病的发生;其中,R.paludigenum与0.3%NaHCO3合用对控制冬枣果实黑斑病的效果最好.说明R.paludigenum与某些食品添加剂结合使用在控制冬枣果实采后病害方面具有潜在的应用价值.
Biocontrol efficacy of antagonistic yeast Rhodosporidium paludigenurn in combination with different concentrations of sodium bicarbonate （SBC） and sodium paraben against postharvest disease caused by Alternaria alternata in jujube （Zizyphus jujuba cv. Dongzao） was investigated. Meanwhile, the effect of SBC and sodium paraben on the capability of growth of R. paludigenum was tested. The results of in vivo and in vitro tests indicate that the combination of R. paludigenum with 0.3% NaHCO3, 0. 012‰（W/V） sodium butyl paraben or sodium ethyl paraben could enhance the inhibition for jujube black rot caused by A. alternata. 0.3 % NaHCO3 was the most consistent in improving biocontrol activity. In addition, the growth of R. paludigenum was not inhibited by SBC and sodium paraben in the wounds of jujube fruit. Therefore, R. paludigenum in combination with some food additives might have great potential against postharvest fungal diseases of jujube fruit.
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2009年第2期158-164,共7页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
国家自然科学基金资助项目(30771514)
国家高技术研究发展计划"863"资助项目(2006AA10Z348)
关键词
海洋酵母拮抗菌
生物防治
采后病害
食品添加剂
冬枣
antagonistic marine yeast
biocontrol
postharvest diseases
food additives
jujube
