The Effects of Flooding and Drought Stresses on the Antioxidant Constituents in Sweet Potato Leaves

文化大學機構典藏 CCUR > 環境規劃暨生物資源學院 > 農學院 > 園藝暨生物技術學系 > 期刊論文 > Item 987654321/34632

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题名:	The Effects of Flooding and Drought Stresses on the Antioxidant Constituents in Sweet Potato Leaves 淹水與乾旱逆境對甘藷葉片抗氧化物組成份之影響
作者:	林冠宏趙璧玉楊棋明鄭文菁羅筱鳳張粲如
贡献者:	園生系
关键词:	淹水逆境乾旱逆境抗氧化功效甘藷 Antioxidative activity Drought stresses Flooding stress Sweet potato
日期:	2006-10
上传时间:	2016-10-28 09:00:41 (UTC+8)
摘要:	環境逆境使植物產生活化氧族，並造成氧化逆鏡。本研究探討3個甘藷品種桃園2號、西蒙1號與徐藷18號受淹水與乾旱逆境時葉片之抗氧化系統，試驗採完全逢機裂區設計，取每株完全開之嫩葉測定抗氧化活性，不同品種之??、多酚與類黃酮含量、以及還原力、掃除二苯基-苦味基團(DHHP)游離基與超氧陰離子之能力各有不同，逆境下三品種之多酚含量與掃除超氧陰離子百分比皆顯著降低，而共□雙烯(conjugated dienes)抑制百分比顯著升高，可做為甘藷淹水與乾旱耐受性之指標，並緩和淹水與乾旱效應。 Environment stress results in generation of reactive oxygen species in plants and causes oxidative stress. The aim of this work was to study the changes to the antioxidative system in the leaves of three sweet potato varieties, Taoyuan 2, Simon 1, and Sushu 18 as affected flooding and drought stresses. The experimental design was completely randomized with a split plot arrangement of treatments. Young, fully expended leaves from each plant were clipped for antioxidant activity measurement. We concluded that genotypes exhibited their abilities and specificities on porphyrins, polyphenol, flavonoids, reduction power and scavenging DPPH radical and superoxide anion. The polyhenol content and scavenging superoxide anion percentage of the three sweet potato varieties under the stresses declined significantly. However, the conjugated dienes inhibition percentage increased markedly under the stresses. Inhibiting the conjugated dienes could mitigate flooding and drought stress effects and be useful as a flooding and drought-tolerant index.
關聯:	Botanical Studies 47:4 民95.10 頁417-426
显示于类别:	[園藝暨生物技術學系] 期刊論文

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