查詢結果分析
相關文獻
- The Response of the Invasive Weed Mikania micrantha to Infection Density of the Obligate Parasite Cuscuta campestris and Its Implications for Biological Control of M. micrantha
- 遮陰對大葉楠與香楠苗木光合作用及生理之影響
- 大豆生殖生長期葉片光合作用能力與產量關係之研究
- 木荷苗木之葉綠素與可溶性蛋白質含量及光合作用速率受二氧化硫污染的影響
- Photosynthetic Capacity of Miscanthus Species at High and Low Elevations of Sub-Tropical Taiwan through Different Seasons and the Relationships with Chlorophyll Content and Stomatal Conductance
- 火鶴花採後光合作用速率對瓶插壽命之影響
- 氮肥對稉稻高供源與積存特性導入系之光合生理特徵影響
- 兩種速測法在果樹葉片葉綠素含量測定之應用
- 作物遭受降雨之生理反應
- Drought Stress Effects on Photosynthetic Rate and Leaf Gas Exchange of Wheat
頁籤選單縮合
題名 | The Response of the Invasive Weed Mikania micrantha to Infection Density of the Obligate Parasite Cuscuta campestris and Its Implications for Biological Control of M. micrantha=入侵雜草薇甘菊對寄生植物田野菟絲子不同寄生密度的回應及其對薇甘菊的生物控制的啟示 |
---|---|
作 者 | 沈浩; 洪嵐; 陳華; 葉萬輝; 曹洪麟; 王章明; | 書刊名 | Botanical Studies |
卷期 | 52:1 2011.01[民100.01] |
頁次 | 頁89-97 |
分類號 | 433.58 |
關鍵詞 | 生物控制; 葉綠素含量; 入侵雜草; 寄生植物; 光合作用; 可溶性蛋白; 雜草管理; Biological control; Chlorophyll content; Growth; Invasive weed; Parasitic plant; Photosynthesis; Soluble protein; Weed management; |
語文 | 英文(English) |
中文摘要 | 為了探求利用寄生植物田野菟絲子 (Cuscuta campestris Yuncker) 對入侵雜草薇甘菊 (Mikania micrantha H.B.K.,又名小花蔓澤蘭) 進行生物控制的有效措施,我們研究了薇甘菊對 0,1,2,4和 8棵田野菟絲子幼苗的寄生在生長、生物量分配、光合作用、葉綠素含量和可溶性蛋白。寄生後 30天,田野菟絲子顯著降低薇甘菊的生物量和第 8片成熟葉片的淨光合速率。這些負效應隨著田野菟絲子的寄生密度從 1到 4棵田野菟絲子 /株薇甘菊 (以下簡稱棵/株) 逐漸加劇,而在寄生密度為 4和 8棵 /株時無顯著差異。因此,在野外利用田野菟絲子控制薇甘菊的最理想寄生密度是 4棵 /株。同時,寄生也顯著降低了寄主的氣孔和蒸騰速率,但在寄生密度為 2,4,8之間對寄主的影響並不顯著;水分利用效率在寄生與對照間一直保持一個相似的水準。在 1,2,4和 8棵 /株的寄生密度下,寄主薇甘菊的地上部分分別在寄生後 83,62,50和 46天死亡。不同寄生密度下被寄生薇甘菊的葉片中的葉綠素含量 (包括葉綠素 a和 b) 均顯著降低, 1棵 /株以上的寄生密度導致薇甘菊可溶性蛋白的含量顯著降低。這些結果表明,田野菟絲子的寄生對薇甘菊的影響依賴於寄生密度,從而為利用田野菟絲子控制薇甘菊提供了理論基礎。 |
英文摘要 | The efficacy of a biological control agent depends upon the impact it has on the target species. We investigate the use of the obligate parasitic plant, Cuscuta campestris Yuncker as a biological control for the invasive weed Mikania micrantha H.B.K. In this experiment we test whether the impacts of the parasite on host growth, biomass allocation, photosynthesis, chlorophyll content, and soluble protein are affected by the density of the parasite. We examined the response of M. micrantha to infection densities of 0, 1, 2, 4 and 8 C. campestris seedlings per host plant. By day 30 after parasitization, C. campestris infection had significantly reduced M. micrantha biomass and the net photosynthetic rate of the 8th fully expanded leaf. These negative effects were greater as the number of parasites increased from 1 to 4 per host, but not from 4 to 8. Mikania micrantha stomatal conductance and transpiration rate were significantly reduced by C. campestris infection, but among 2, 4, 8 parasites per host there were no significant effects of infection densities on the host plants. Water use efficiency remained stable. The aerial parts of the infected M. micrantha plants at densities of 1, 2, 4 and 8 parasites per host died 83, 62, 50 and 46 d after parasitization on average, respectively. All infection densities decreased host chlorophyll content (a and b), and the infection by more than 1 parasite also significantly lowered soluble protein concentration. The results indicated that the effects of C. campestris infection on M. micrantha are density dependent, which provides a basis for refining the use of the parasite for biological control of M. micrantha. The optimal cost-effective number of parasites to control M. micrantha is 4 per host plant in the field. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。