สืบค้นงานวิจัย
Physiological, morphological changes and storage root yield of sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-induced water stress
Yooyongwech S. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Physiological, morphological changes and storage root yield of sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-induced water stress
ผู้แต่ง / หัวหน้าโครงการ (EN): Yooyongwech S.
บทคัดย่อ (EN): 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.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020238845&doi=10.15835%2fnbha45110651&partnerID=40&md5=ba36f321900bb806720082bdfa724c2d
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Total soluble sugar
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Yooyongwech S.. "Physiological, morphological changes and storage root yield of sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-induced water stress". ไม่ระบุหน่วยงาน. ม.ป.ป.

Yooyongwech S.. "Physiological, morphological changes and storage root yield of sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-induced water stress". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Physiological, morphological changes and storage root yield of sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-induced water stress
Yooyongwech S.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
Ipomoea cambodiensis Gagnep. & Courchet (Convolvulaceae) recharacterised with notes on its distribution and ecology Physio-morphological responses of sweet potato [Ipomoea batatas (L.) Lam.] genotypes to water-deficit stress Phenotypic variation of cassava root traits and their responses to drought Water-deficit tolerance in sweet potato [Ipomoea batatas (L.) Lam.] by foliar application of paclobutrazol: Role of soluble sugar and free proline Fast and efficient removal of hexavalent chromium from water by iron oxide particles Arbuscular mycorrhizal fungi (AMF) improved water deficit tolerance in two different sweet potato genotypes involves osmotic adjustments via soluble sugar and free proline Cassava root membrane proteome reveals activities during storage root maturation Cadmium removal from water and soil by a cadmium-resistant rhizobacterium and its effect on plant root elongation Impacts of Water Stress on Gas Exchange, Water Relations and Chlorophyll Content in Five Hevea brasilensis Clones Effects of heat stress on physiological index in cultivated strawberries
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