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| 題 名 | Cotton(Gossypium spp.)Leaf Burn Syndrome: A New Cotton Plant Disorder=「棉花葉燒病」病徵和發病環境的分析 |
|---|---|
| 作 者 | 朱昌祺; | 書刊名 | 中華農學會報 |
| 卷 期 | 166 1994.06[民83.06] |
| 頁 次 | 頁76-93 |
| 分類號 | 434.618 |
| 關鍵詞 | 「棉花葉燒病」; 葉片溫度; 葉片水份含量; 蒸散量; 棉花產量; Aldicarb; |
| 語 文 | 英文(English) |
| 中文摘要 | 1989年美國南加州皇帝谷棉田在七月中旬植株普遍發生一種新的生長異常現象,初期病徵為葉片中心部分出現棕色斑點,七到十天後棕色斑點合併擴大成棕色的病塊;葉脉顏色轉淡,但其輸送水分和營養的功能似乎未受影響。四、五天後,病塊變焦,有時有穿洞的現象,病塊周圍出現銀色細圈,無病徵部分的葉片仍呈綠色,但顏色較正常者為淡。本文分析發病期間各種環境因素、植物生理的變化,討論各種假說,井報告這種異常現象對產量的影響。在病因未證實前,作者暫時命名這種異常生育現象為「棉花葉燒病」。 |
| 英文摘要 | Cotton "leaf burn" syndrome occurred widespread throughout the Imperial Valley, Califormia in 1989. The symptoms first appear in mid-July on leaves in most cases located on the exterior of the plant canopy. The first visible indication was small brownish areas in the palms of leaves. These areas enlarge and merge to dried necrotic areas surrounded by silvery rings. Prior to the appearance of "leaf burn" symptoms, the dark green color of leaves often fades to a paler green. Stomata conductance and leaf transpiration of affected leaves were lowered, and leaf water potentials and leaf temperatures were abnormally high in affected plants. Lint yields were reduced by an average of 30%. To data, cause(s) of the cotton "leaf burn" syndrome are unknown. However, soil applications of aldicarb [2-methyl-2- (methylthio) propionaldehyde-O- (methyl-carbamoyl) oxime] alleviate the symptoms and increase cotton yields. |
本系統中英文摘要資訊取自各篇刊載內容。