查詢結果分析
來源資料
頁籤選單縮合
題名 | Infection of Canola Pollen by Sclerotinia Sclerotiorum=菌核病菌侵害油菜花粉之研究 |
---|---|
作者 | 黃鴻章; Huang, Hung Chang; Kokko,Eric Gerard; Erickson,Russell Scott; Hynes,Russell K.; |
期刊 | 植物病理學會刊 |
出版日期 | 19980600 |
卷期 | 7:2 1998.06[民87.06] |
頁次 | 頁71-77 |
分類號 | 435.24 |
語文 | eng |
關鍵詞 | 油菜; 花粉; 菌核病菌; Canola pollen; Sclerotinia sclerotiorum; Brassica napus; |
中文摘要 | 由影像分析研究顯示新鮮風乾之油菜( Conola )花粉粒多呈橢圓形,經吸水後 則轉變為圓形而且容積增大約 5.2%。 花粉粒置於無菌水中可以促進菌核病菌( Sclerotinia sclerotiorum )的子囊孢子( ascospores )之發芽與菌絲之生長。 用顯微 鏡檢查孢子與花粉混合培養 5 天的材料,可以觀察到很多圓形花粉粒受子囊孢子侵染, 所 有為害方式都是由菌絲尖端直接穿透花粉細胞璧, 而未有經由特殊入侵器( Infection cushion )或附著器( appressoria )才造成入侵的現象。 一般菌絲經由花粉粒之發芽孔 入侵較為常見,而由其他花粉部位入侵則較為罕見。菌絲入侵後可導致花粉粒細胞原生質分 離,細胞質融解以至於細胞璧破碎等現象。 |
英文摘要 | The shape of mature pollen grains of canola (Brassica napus L.), cv. Westar, is ellipsoidal when air-dried but is spheroidal when moistened. Data from image analysis showed that the water-imbibed spheroidal pollen grains had a small (5.2%) increase in volume compared to the air-dried, ellipsoidal pollen. Ascospores of Sclerotinia sclerotiorum germinated in sterile water with or without canola pollen grains. The germ tubes of ascospores grew slowly and remained short in water in the absence of pollen but they grew rapidly and developed into branched mycelia in 48 h in the presence of pollen. Examination of 5-dayold ascospore-pollen mixtures revealed that pollen grains were susceptible to infection by S. sclerotiorum. Infection occurred by direct hyphal penetration was more commonly observed through the germinative pores than other parts of the pollen walls. Plasmolysis and disintegration of the pollen cytoplasm occurred as a result of hyphal ramifications within the infected pollen grains. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。