Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.15835/nbha45110651 |
Physiological, Morphological Changes and Storage Root Yield of Sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-Induced Water Stress | |
Yooyongwech, Suravoot1; Samphumphung, Thapanee2; Tisaram, Rujira2; Theerawitaya, Cattarin2; Cha-Um, Suriyan2 | |
通讯作者 | Cha-Um, Suriyan |
来源期刊 | NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA
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ISSN | 0255-965X |
EISSN | 1842-4309 |
出版年 | 2017 |
卷号 | 45期号:1页码:164-171 |
英文摘要 | Sweetpotato is an important tuberous root crop rich in nutrients such as vitamins and carbohydrates, and can grow well in arid regions with less water consuming crop. The aim of this research was to evaluate the storage root yields, physiological, biochemical and morphological traits in sweetpotato cv. ’Japanese Yellow’ subjected to polyethylene glycol (PEG)-induced water deficit. At harvest (4 months after planting) the number of storage roots per plant and storage root fresh weight in sweetpotato treated with 5% PEG (-0.54 MPa) in nutrient solution of hydroponic culture declined by 20.0% and 47.4% compared to the control without PEG, respectively. Leaf area and leaf dry weight significantly decreased by 85.6% and 95.3%, respectively when exposed to water deficit stress. Sucrose content (114.7 mg g(-1) dry weight; DW) in storage roots of sweetpotato grown under PEG-induced water deficit conditions was enriched by 2.2 fold of control (52.5 mg g(-1) DW) and was greater than in storage roots derived from soil culture (70.3 mg g(-1) DW). Total soluble sugar in the root and storage root tissues was enriched and may play a key role as osmotic adjustment (OA) in PEG-induced water stressed plants. Free proline and sucrose contents were also dominated in the leaf tissues to maintain the leaf osmotic potential in water stressed plants. In addition, chlorophyll degradation, chlorophyll fluorescence diminution and stomatal closure were found in plants grown under PEG-induced water deficit conditions, leading to reduction in net photosynthetic rate (Pn) and subsequently lesser amounts of glucose and fructose contents in the leaf tissues. Sucrose and free proline in the roots of sweetpotato play a key role as major osmotic adjustment when subjected to PEG-induced water deficit condition. Basic knowledge gained from this research will further be investigated the drought defense mechanism in sweetpotato via osmoregulation system. |
英文关键词 | net photosynthetic rate osmotic adjustment polyethylene glycol (PEG) sucrose total soluble sugar |
类型 | Article |
语种 | 英语 |
国家 | Thailand |
收录类别 | SCI-E |
WOS记录号 | WOS:000403394200022 |
WOS关键词 | INDUCED OSMOTIC-STRESS ; INDUCED DROUGHT STRESS ; X ENVIRONMENT INTERACTION ; SOIL-MOISTURE DEFICIT ; LINEAR GROWTH-RATE ; DAILY LIGHT PERIOD ; POLYETHYLENE-GLYCOL ; CHLOROPHYLL FLUORESCENCE ; SOLUTE ACCUMULATION ; GAS-EXCHANGE |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/201262 |
作者单位 | 1.Mahidol Univ, Div Agr Sci, Kanchanaburi Campus, Kanchanaburi 71150, Thailand; 2.NSTDA, Natl Ctr Genet Engn & Biotechnol BIOTEC, Pathum Thani 12120, Thailand |
推荐引用方式 GB/T 7714 | Yooyongwech, Suravoot,Samphumphung, Thapanee,Tisaram, Rujira,et al. Physiological, Morphological Changes and Storage Root Yield of Sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-Induced Water Stress[J],2017,45(1):164-171. |
APA | Yooyongwech, Suravoot,Samphumphung, Thapanee,Tisaram, Rujira,Theerawitaya, Cattarin,&Cha-Um, Suriyan.(2017).Physiological, Morphological Changes and Storage Root Yield of Sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-Induced Water Stress.NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA,45(1),164-171. |
MLA | Yooyongwech, Suravoot,et al."Physiological, Morphological Changes and Storage Root Yield of Sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-Induced Water Stress".NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA 45.1(2017):164-171. |
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