สืบค้นงานวิจัย
Water-deficit tolerance in sweet potato [Ipomoea batatas (L.) Lam.] by foliar application of paclobutrazol: Role of soluble sugar and free proline
Yooyongwech S. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Water-deficit tolerance in sweet potato [Ipomoea batatas (L.) Lam.] by foliar application of paclobutrazol: Role of soluble sugar and free proline
ผู้แต่ง / หัวหน้าโครงการ (EN): Yooyongwech S.
บทคัดย่อ (EN): The objective of this study was to elevate water deficit tolerance by improving soluble sugar and free proline accumulation, photosynthetic pigment stabilization, photosynthetic abilities, growth performance and storage root yield in sweet potato cv. ‘Tainung 57’ using a foliar application of paclobutrazol (PBZ). The experiment followed a Completely Randomized Block Design with four concentrations of PBZ: 0 (control), 17, 34, and 51 µM before exposure to 47.5% (well irrigation), 32.3% (mild water deficit) or 17.5% (severe water deficit) soil water content. A sweet potato cultivar, ‘Japanese Yellow’, with water deficit tolerance attributes was the positive check in this study. Total soluble sugar content (sucrose, glucose, and fructose) increased by 3.96-folds in ‘Tainung 57’ plants treated with 34 µM PBZ grown under 32.3% soil water content (SWC) compared to the untreated plants, adjusting osmotic potential in the leaves and controlling stomatal closure (represented by stomatal conductance and transpiration rate). In addition, under the same treatment, free proline content (2.15 µmol g−1 FW) increased by 3.84-folds when exposed to 17.5% SWC. PBZ had an improved effect on leaf size, vine length, photosynthetic pigment stability, chlorophyll fluorescence, and net photosynthetic rate; hence, delaying wilting symptoms and maintaining storage root yield (26.93 g plant−1) at the harvesting stage. A positive relationship between photon yield of PSII (ΦPSII) and net photosynthetic rate was demonstrated (r2 = 0.73). The study concludes that soluble sugar and free proline enrichment in PBZ-pretreated plants may play a critical role as major osmoprotectant to control leaf osmotic potential and stomatal closure when plants were subjected to low soil water content, therefore, maintaining the physiological and morphological characters as well as storage root yield. © 2017 Yooyongwech, Samphumphuang, Tisarum, Theerawitaya and Cha-um.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027676615&doi=10.3389%2ffpls.2017.01400&partnerID=40&md5=082134bb86d7c77f0f047ebd9d08e308
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Water deficit
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Yooyongwech S.. "Water-deficit tolerance in sweet potato [Ipomoea batatas (L.) Lam.] by foliar application of paclobutrazol: Role of soluble sugar and free proline". ไม่ระบุหน่วยงาน. ม.ป.ป.

Yooyongwech S.. "Water-deficit tolerance in sweet potato [Ipomoea batatas (L.) Lam.] by foliar application of paclobutrazol: Role of soluble sugar and free proline". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Water-deficit tolerance in sweet potato [Ipomoea batatas (L.) Lam.] by foliar application of paclobutrazol: Role of soluble sugar and free proline
Yooyongwech S.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
Arbuscular mycorrhizal fungi (AMF) improved water deficit tolerance in two different sweet potato genotypes involves osmotic adjustments via soluble sugar and free proline 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 Selection of Potato Trial Varieties in Northern Thailand Physiological, morphological changes and storage root yield of sweetpotato [Ipomoea batatas (L.) Lam.] under PEG-induced water stress LW7 marker application for sweet sorghum breeding in BC3F2 CPPU elevates photosynthetic abilities, growth performances and yield traits in salt stressed rice (Oryza sativa L. spp. indica) via free proline and sugar accumulation Comparison in Hydraulic Response to Water Stress Tolerance of Two Rubber Clones Nano Silver Doped Water Soluble Hyperbranched Polyesters for Coating Applications Aplication of osmoregulator substances to improve rubber plants tolerance to water stress
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