สืบค้นงานวิจัย
A MODIFIED STIMULATION METHOD IN HEVEA BRASILIENSIS FOR REDUCING OXIDATIVE STRESS
R. Krishnakumar - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): A MODIFIED STIMULATION METHOD IN HEVEA BRASILIENSIS FOR REDUCING OXIDATIVE STRESS
ผู้แต่ง / หัวหน้าโครงการ (EN): R. Krishnakumar
บทคัดย่อ (EN): Stimulating Hevea trees using yield stimulants such as ethephon is a common practice in rubber estates for harvesting more latex by extending the duration of latex flow. Wounding rubber trees by conventional tapping will trigger ethylene biosynthesis in the bark tissue. Earlier studies indicated that a single dose of stimulant application triggered stress responses in the tapping panel of Hevea trees, while over-stimulation induces physiological disorders like tapping panel dryness (TPD) (Krishnakumar et al., 2009, 2010). The high ethylene level in the bark tissues of the ethephon treated trees may eventually result in oxidative stress leading to irreversible damage of the laticiferous tissue, ultimately leading to the inhibition of rubber biosynthesis, thereby limiting the crop productivity. Therefore, minimizing stress responses with optimum stimulation methods is very essential to keep the health of rubber trees with sustainable yield. A study has been carried out to assess yield enhancement and magnitude of stress responses in Hevea trees using different stimulation methods as follows. Mature Hevea trees (clone RRII 105) were stimulated in five different treatments viz. (A) 150cm above the bud union, (B) on the bud union, (C) both A and B treatments together, (D) standard stimulation practice and (E) unstimulated control. The trees were observed for a period of one month before and two months after the stimulation for latex yield and stress components were analyzed in each group among the treatments and unstimulated control. Treatment c resulted in maximum yield and minimum stress responses. In this group, the latex yield was significantly higher (88.7 g/t/t) than trees stimulated with the standard method (half spiral, panel application) (60.26 g/t/t) probably due to the increased drainage area impacted by the stimulant. Stress response in the tapping panel was studied by analyzing components like hydrogen peroxide (H2O2), peroxidase, cyanide (CN), β-Cyanoalanine synthase (βCAS) and malondialdehyde (MDA) which have shown variations with treatments. Compared to the standard stimulation method, stress response was minimum in trees stimulated with the modified method C. By adopting this method the direct local effect of ethylene on the tapping panel which is harmful for the tree could be avoided and this is being investigated.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): Stimulation methods.
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

การอ้างอิง

R. Krishnakumar. "A MODIFIED STIMULATION METHOD IN HEVEA BRASILIENSIS FOR REDUCING OXIDATIVE STRESS". ไม่ระบุหน่วยงาน. ม.ป.ป.

R. Krishnakumar. "A MODIFIED STIMULATION METHOD IN HEVEA BRASILIENSIS FOR REDUCING OXIDATIVE STRESS". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



TARR Wordcloud:
A MODIFIED STIMULATION METHOD IN HEVEA BRASILIENSIS FOR REDUCING OXIDATIVE STRESS
R. Krishnakumar
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
Plant Hormones and Oxidative Stress in Hevea brasiliensis Identification of Signalling Factors involved in the Regulation of Laticifer Metabolism by Tapping and Ethephon Stimulation in Hevea brasiliensis Phloic Rays in Hevea brasiliensis with Reference to Tapping Panel Dryness and Yield Stimulation Cloning and expression of HbACO2 of Hevea brasiliensis Localization of Peroxidase Enzyme in the Bark of Hevea brasiliensis Effect of Temperature Constraints on Photosynthesis of Rubber (Hevea brasiliensis) Rapid Molecular Identification and Detection of Corynespora cassiicola of Hevea brasiliensis Association of a Viroid with Tapping Panel Dryness of Hevea brasiliensis and its Molecular Characterization Response of Several IRR Series Hevea Clone to Tapping System with Stimulation Drought Tolerance in Transgenic MsSOD Hevea brasiliensis in A Dry Humid Environment
คัดลอก URL
กระทู้ของฉัน
ผลการสืบค้นทั้งหมด โพสต์     เรียงลำดับจาก
พัฒนาระบบโดยศูนย์ความรู้เฉพาะด้านวิศวกรรมความรู้และวิศวกรรมภาษาDeveloped by Center of Excellence for Unified Knowledge and Language Engineering
สนับสนุนโดยสำนักงานพัฒนาการวิจัยการเกษตร (องค์การมหาชน)Supported by the Agricultural Research Development Agency (Public Organization)
แบบสำรวจความพึงพอใจQuestionair