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題 名 | Effects of Waterlogging Stages on Growth and Forage Quality of Sudangrass (Sorghum sudanense Stapf)=不同淹水期對蘇丹草生長及品質之影響 |
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作 者 | 林正斌; 張世融; 許福星; | 書刊名 | 中華農學會報 |
卷 期 | 2:3 2001.06[民90.06] |
頁 次 | 頁277-285 |
分類號 | 434.4 |
關鍵詞 | 蘇丹草; 淹水; 生長; 牧草品質; Sorghum sudanense; Waterlogging; Growth; Forage quality; |
語 文 | 英文(English) |
中文摘要 | 蘇丹草(Sorghum sudanense Stapf.)臺畜草一號為新育成之牧草品種,是一種短期芻料作物,為探討淹水對蘇丹草生長及芻料品質之影響,本試驗以蘇丹草臺畜草一號為材料,於四葉、八葉及孕穗期等不同生育期分別淹水1-3天。結果顯示,在春作於不同生育期淹水處理1-3天的單株鮮重、分?、株高、根長、根數、氣孔導度及代表根部活力之triphenyl tetrazolium chloride (TTC)呈色反應均顯示,淹水處理低於不淹水處理者,且有些達顯著性差異;秋作淹水之影響則較不明顯。不同生育期淹水後種子發育至乳熟期時收穫,結果顯示淹水對植體化學成分之影響差異並不顯著。以石蠟切片觀察根組織亦顯示,淹水造成根組織差異。綜合上述,蘇丹草對於淹水逆境造成的傷害具有恢復力,所以淹水雖然對農藝及生理性狀有影響,但對乳熟期收穫之蘇丹草植體成分等雛料品質差異並不明顯。 |
英文摘要 | Sudangrass (Sorghum sudanense Stapf) Cv. Taishi No. 1 is a forage species with short-period growth. The objective of the experiment was to determine the effects of waterlogging stages on plant growth and forage quality of sudangrass CV. Taishi No. 1. The plants were waterlogged at 4th leaf, 8th leaf and booting stages for 1 to 3 days, respectively. In spring crop, the fresh weight per plant, plant height, root length , tiller, root numbers, stomatal conductance and root activity of sudangrass were decreased after waterlogging at any growth stages and perios as compared to control plants, while the effects of waterlogging on plant growth of sudangrass were not clear in fall crop. The effects of waterlooging on the chemical compositions of sudangrass harvested at milk stage were not significant. Some differences were observed in the transverse section of root tissues in waterlogged and controlled plants. However, no significant effect due to waterlogging treatment was observed on the plant growth and physiological response of sudangrass in spring crop. The results showed that the agronomic traits and the chemical compositions of sudangrass were not affected when harvested at milk stage. This indicated that sudangrass could recover to grow fast after waterlogging stress. |
本系統中英文摘要資訊取自各篇刊載內容。