สืบค้นงานวิจัย
Carbohydrate Variation of Hevea Induced by Tapping Systems
P. Chantuma - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Carbohydrate Variation of Hevea Induced by Tapping Systems
ผู้แต่ง / หัวหน้าโครงการ (EN): P. Chantuma
บทคัดย่อ (EN): Trees rely on carbohydrate reserves stored in parenchyma when the current level of carbohydrates produced by photosynthesis is not enough to meet the demand for maintenance, growth or metabolism. However, an increased C demand does not necessarily result in a depletion of carbohydrate concentration in wood, additional sink created by tapping or harvesting resulted not in a decrease, but an increase in total carbohydrate reserves. In the present study, the dynamic response of C reserves to tapping was further investigated regarding compartmentalization and chemical fractions. Three tapping systems were compared to the untapped control for 2 years. Soluble sugars and starch were analyzed in bark and wood on both sides of the trunk, from 50 cm to 200 cm from ground. We confirmed that variations in non-structural carbohydrate (NSC) relied mainly on starch and that tapped trees had higher starch and NSC than controls. Moreover, a double cut alternative system (DCA), which produced a higher yield than conventional systems tapped on one side only, lead to even higher carbohydrate concentrations. Whereas the tapped side had lower starch concentration than the untapped in conventional systems, DCA-treated trees exhibited high starch concentration in both sides. SS was higher in bark, where latex regeneration occurs, than in wood, whereas it was the contrary for starch and NSC. From seasonal dynamics and differences between the 2 sides of the trunk in response to tapping, we concluded that starch in wood behaved as the long-term reserve compartment acting at the whole plant level, whereas starch in bark and SS behaved more like intermediate, ready-to-use compartments. Finally, the dynamics of carbohydrate reserves appears to be a relevant parameter to assess long term performance of tapping systems.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): sugar
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

การอ้างอิง

P. Chantuma. "Carbohydrate Variation of Hevea Induced by Tapping Systems". ไม่ระบุหน่วยงาน. ม.ป.ป.

P. Chantuma. "Carbohydrate Variation of Hevea Induced by Tapping Systems". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Carbohydrate Variation of Hevea Induced by Tapping Systems
P. Chantuma
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
IMPROVEMENT AND APPLICATION OF THE TECHNIQUE OF MINI-SEEDLING BUDDING OF HEVEA BRASILIENSIS Rubber Particles Proteins and Sensitivity to the Tapping Panel Dryness at Hevea brasiliensis Association of a Viroid with Tapping Panel Dryness of Hevea brasiliensis and its Molecular Characterization Assessment of Low Frequency Tapping Systems with Stimulation on Hevea in Southern Thailand Preliminary Yield Potential Comparison on ½ S d/3 and ½ S d/4 Tapping Systems of Some Hevea Clones in Cambodia Phloic Rays in Hevea brasiliensis with Reference to Tapping Panel Dryness and Yield Stimulation Effects of drought and tapping for latex production on water relations of Hevea brasiliensis trees Impact of The Reduction of The Tapping Frequency On the Agronomic and Physiological Parameters of Clone PB 260 of Hevea brasiliensis in the Centre West of Cote D’ ivoire in Order to Make Up For The Sh A MODIFIED STIMULATION METHOD IN HEVEA BRASILIENSIS FOR REDUCING OXIDATIVE STRESS Identification of Signalling Factors involved in the Regulation of Laticifer Metabolism by Tapping and Ethephon Stimulation in Hevea brasiliensis
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