頁籤選單縮合
題名 | 臺灣高粱麥角病之研究 |
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作者 | 林俊義; | 書刊名 | 臺中區農業改良場研究彙報 |
卷期 | 40 1993.09[民82.09] |
頁次 | 頁17-28 |
分類號 | 434.158 |
關鍵詞 | 高粱麥角病; Claviceps sorghi; Ergot; Sorghum; |
語文 | 中文(Chinese) |
中文摘要 | 高粱台中五號於民國79年秋作,在嘉義六腳、布袋地區及台中縣,省 種苗場繁殖的高梁採種田部份田區發生麥角病,平均罹病度為19.1%,宿根高粱 採種田於六腳地區80年春作進行,麥角病比前期作更趨嚴重,罹病度44.9%。 一般採種田以母本發病嚴重,而父本較輕微,但仍可發現淚滴狀蜜露之產生。目 前本省尚未發現有性世代,僅由穗部的蜜露中採到無性世代的大孢子、小孢子及 次生孢子三種形態。若用PDA培養,菌絲生長緩慢,一個月才長直徑1.5cm之 菌落。利用單胞或病組織分離方法,以M43培養基培養時可產生大量菌絲,而 M102及SE培養基則可產生菌絲及孢子。至於篩選拌種用藥劑,選取得23% Folicur乳劑對分生胞子有抑制發芽作用但屬靜菌作用,而80% TMTD可濕性粉 劑則為殺菌作用,兩者均可提高種子的發芽率。 |
英文摘要 | The F1 seed production field of ratoon sorghum (Taichung No. 5) cultivated at Chai-yi & Taichung area was found to be more seriously infected by the ergot pathogen: Claviceps sorghi (disease percentage 44.9%) than those of normal sorghum (disease percentage 19.1%) during autumn in 1980. The female parents of sorghum which were male-sterility were usually more susceptible than the male parents to the pathogen. The honeydew-like sign of Claviceps sorghi appearred on the infected panicle of female parents was easily observed by nake eye. Under microscopic examination, the pathogen produced three types of conidica: macroconidica, microconidia and secondary conidica. Culturing the mycelium of Claviceps sorghi on PDA medium, found the colony grew slowly. It reached only 1.5 cm in diameter after one month. However, the pathogen could produced a bunch of mycelium on M43 and condia on M102 or SE liquid medium. Some of useful fungicides had been screenned and found that 23% Folicur E. C. fungistatically inhibited the germination of condidia, 80% TMTD W. P. fungicidally inhibited the germination of conidia. Both of these two fungicides could increase the seed germination of sorghum. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。