曲霉及穗霉侵染对银杏种子采后生理的影响  

Effects on Post-Harvest Patho-Physiology of Ginkgo biloba Seed Infected with Aspergillus spp. and Spicaria sp.

作　　者：于新[1] 冯彤[1] 余小林[2] 张百超[3] 庞杰[3] 

机构地区：[1]仲恺农业技术学院食品科学系,广东广州510225 [2]华南农业大学食品科学系,广东广州510642 [3]西南农业大学食品科学学院,重庆400716

出　　处：《华南农业大学学报》2001年第4期48-51,共4页Journal of South China Agricultural University

基　　金：广东省自然科学基金资助项目 (96 0 5 2 2 ) ;广东省"百项工程"资助项目 (99B0 5 90 3X) ;广东省教育厅自然科学重点资助项目 (96 330 3)

摘　　要：研究了常温贮藏过程中 ,曲霉 (Aspergillusspp .)及穗霉 (Spicariasp .)侵染对银杏 (GinkgobilobaL .)种子采后生理的影响 .结果表明 :在 2 5℃ ,RH85 %的条件下 ,接种侵染的银杏种子的病害症状各不相同 .接种第 18d ,与CK组比较 ,各接种组的呼吸强度 (RI)增加了 198.4～ 5 6 4.7mg/ (kg·h) ,相对电导率 (REC)增加了 8.91%～ 18.5 5 % ,失水率增加 32 .0～ 2 12 .6g/kg ,达到极显著差异水平 (P <0 .0 1) .Spicariasp .组的RI、膜透性和失水率均大于Aspergillusspp .组 .上述 3项生理指标上升的快慢是不同步的 ,因不同病原菌而异 .接种 12或 15d时 ,接种组淀粉和蛋白质相对含量均高于CK组 ,并达到显著差异水平 (P <0 .0 5 ) .Effects of infection with pathogenic fungi, Aspergillus spp. and Spicaria sp., on post harvest physiology of Ginkgo biloba seed were studied at 25 ℃ and RH85%. The result showed different symptoms of various diseases on inoculated seeds. Compared to normal seeds(CK), the respiratory intensity( RI ) of infected seeds was increased 198.4～ 564.7 mg/(kg·h), the relative electric conductivity( REC ) and the rate of water lose were 8.91%～18.55%, 32.0～212.6 g/kg higher than that of CK respectively after 18 days inoculation. The above physiologic indices of the seeds inoculated with Spicaria sp. were higher than those of the seeds inoculated with Aspergillus spp. The differences between the above mentioned indices of inoculated groups and CK were significant at 0.01 level ( P <0.01), and their development was asynchronous and depended on the specific pathogenic fungi. The relative contents of starch and protein of inoculated seeds were higher than those of CK and their differences were significant at 0.05 level ( P <0.05) on 12 or 15 d after inoculation.

关 键 词：银杏 曲霉 种子 穗霉 采后生理 呼吸强度 膜透性 失水率 蛋白质代谢 淀粉 

分 类 号：S436.64[农业科学—农业昆虫与害虫防治]