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題 名 | Effect of Waterlogging on Seed Production of Sudangrass (Sorghum sudanense Stapf)=淹水對蘇丹草種子生產之影響 |
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作 者 | 林正斌; 張世融; 梁玉玲; 許福星; | 書刊名 | 中華農藝 |
卷 期 | 13:4 2003.12[民92.12] |
頁 次 | 頁253-259 |
分類號 | 434.43 |
關鍵詞 | 蘇丹草; 淹水; 種子生產; Sorghum sudanense; Waterlogging; Seed production; |
語 文 | 英文(English) |
中文摘要 | 蘇丹草(Sorghum sudanense Stapf)台畜草一號為一種短期芻科作物。為探討淹水對蘇丹草種子生產之影響,本試驗以蘇丹草臺畜草一號為材料,於四葉、八葉、孕穗及開花期等不同生育期分別淹水3天,並以不淹水處理為對照。木顯示,春作時不同生育期淹水3天對植物鮮重、株高、根長、分蘗和根數等均較對照組為低,而所有處理之種子產量則達顯著差異。秋作時於8葉期淹水其總葉面積及種子千粒重均比其他時期淹水處理者鶿低,達顯著性差異,經由偏光顯微鏡觀察,顯示8葉期淹水後種子胚乳內澱粉之充實將受影響。在春作及秋作不同時期淹水對黃熟期之植體成分之影響,並未達顯著性差異。綜合上述,不同時期淹水於春作影響不大,但秋作若於8葉期淹水3天將影響枯葉數、鮮葉數、總葉面積、種子千粒重及發芽率。在偏光顯微鏡下觀察結果,於8葉期水的蘇丹草種子胚乳內澱粉充實不完全,而春作及秋作黃熟期收穫的植株,其化學成分則不受淹水處理之影響。 |
英文摘要 | Sudangrass (Sorghum sudanense Stapf cv. Taishi No.1) is a forage species with a short-period growth. The objective of this experiment was to determine the effect of waterlogging on seed production of sudangrass. The plants were waterlogged at 4th leaf, 8th leaf, booting and flowering stages for 3 days, respectively. In the spring crop, the fresh weight per plant, plant height, root length, tiller and root numbers decreased after waterlogging treatment (CK). No significant difference was observed for the above mentioned traits and seed yield components among the treatment. In the fall corp, the significant effects of waterlogging on total leaf area, 1000 seed weight and germination percentage of sudangrass were observed. The chemical compositions of sudangreass plant were not affected by watrelogging treatment when the plants were harvested at yellow stage both in spring and fall crops. The starch in the endosperm of sudangrass seeds was not completely filled as observed by polarizing microscope. However, the chemical compositions of the plant were not affected when it was harvested at yellow stage both in spring and fall crops. |
本系統中英文摘要資訊取自各篇刊載內容。