สืบค้นงานวิจัย
Timber Production and Wood Quality Parameter Of High Yielding RRII 400 Series Clones of Hevea Brasiliensis Muell. Arg.
T. Meenakum - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Timber Production and Wood Quality Parameter Of High Yielding RRII 400 Series Clones of Hevea Brasiliensis Muell. Arg.
ผู้แต่ง / หัวหน้าโครงการ (EN): T. Meenakum
บทคัดย่อ (EN): Worlds’ supply of non renewable resources is becoming increasingly critical day by day. Wood, a renewable energy source, its availability is fast diminishing. In this context, research and technological improvements in rubber wood as a plantation timber source assumes significance in the years to come. A by-product of rubber plantations, there is a continuous supply of rubber wood in every replanting cycle of 25-30 years. In India, in the earlier years. Rubber Research Institute of India (RRII) have produced many successful clones with a multi fold increase in latex yield. With the recent interest in rubber wood, emphasis is now given to breeding and selection of fast growing clones with high latex yield and timber production. A source of fire wood in olden days, rubber wood is today used in value added products in the form of furniture, furniture components, treated and processed wood etc. Thus the quality of timber is also a crucial factor and information on wood quality parameters of popular clones is essential to augment the rubber wood processing and product development sector for various end uses. Accordingly, development of latex-timber clones and identifying clones with good quality timber traits is a priority area of research of the RRII, Hence a comprehensive study was under taken on the clonal variability among certain newly released high yielding clones of RRII 400 series and their parents with the objective of identifying clones with high timber yield and quality in terms of physical, mechanical and anatomical properties in a holistic manner. Five clones of the RRII 400 series viz., RRII 414, RRII 417, RRII 422, RRII 429 and RRII 430 along with their parents RRII 105 and RRIC 100 were selected for the study. Six trees each of these seven clones, 23 years after planting were clear felled. Wood discs were prepared for physical (basic density and moisture content), mechanical (Modulus of Rupture, Modulus of Elasticity and volumetric shrinkage) and anatomical (pore size and fibre characters) properties according to standard procedures. Clonal variability was analysed following standard procedures. Timber volume of all the 400 series clones in general, was found greater than both the parental clones viz. RRII 105 and RRIC 100, RRII 430 recorded the highest wood density (670 kg/m3) followed by RRII 417 (662 kg/m3). Among the controls, RRII 105 showed better strength properties with that of RRII 105. Volumetric shrinkage values viz., green to air dry (G-AD) and green to oven dry (G-OD) conditions of RRII 400 series clones was higher than that of the parental clones. However the shrinkage values from air dry to oven dry condition (AD-OD) were on par with that of parental clones. This is a good indication of the suitability of the wood of these clones for various value added industrial applications. Porosity in terms of number of pores (vessel elements), total pore area and average cross sectional area of pores are certain desirable traits in terms of enhancing chemical impregnation during processing. The structural properties of test clones were comparable with that of the parents. RRII 430 exhibited relatively higher frequency of pores with lower pore area. Incidence of tylosis is yet another indicator of porosity. Clonal variability was observed for this trait also. RII 400 series clones recorded shorter fibre length and higher fibre width compared to RRII 105, indicating their faster rate of growth. The clone RRII 422 was relatively inferior with respect to timber output as well as quality parameters. The higher timber output and quality traits comparable with that of RRII 105 make the RRII 400 series clones good candidates as Latex Timber Clones. This study is the first report on the wood features of RRII 400 series clones.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): yielding
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

การอ้างอิง

T. Meenakum. "Timber Production and Wood Quality Parameter Of High Yielding RRII 400 Series Clones of Hevea Brasiliensis Muell. Arg.". ไม่ระบุหน่วยงาน. ม.ป.ป.

T. Meenakum. "Timber Production and Wood Quality Parameter Of High Yielding RRII 400 Series Clones of Hevea Brasiliensis Muell. Arg.". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Timber Production and Wood Quality Parameter Of High Yielding RRII 400 Series Clones of Hevea Brasiliensis Muell. Arg.
T. Meenakum
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
Promising latex timber clones of Hevea brasiliensis evolved by ortet selection Studies on Cold Tolerance of Hevea brasiliensis (Muell. Arg.) Clones under Controlled Environmental Conditions ผลของโอโซนต่อการสังเคราะห์ด้วยแสงของยางพารา Hevea brasiliensis Muell.Arg Development and Promotion of Rubber (Hevea brasiliensis Muell Arg.) Towards Commercialization in Oriental and Occidental Mindoro Multiple Protective roles of the Berberine Bridge Enzyme Gene HbBBE1 in Hevea brasiliensis Muell. Arg. Some Considerations Concerning the Yield Potential of Some Clones (Hevea brasiliensis) ความหลากหลายทางพันธุกรรมของเชื้อรา Phytophthora spp. สาเหตุโรคของยางพารา (Hevea brasiliensis Muell.Arg.) ในพื้นที่เพาะปลูกจังหวัดสุราษฎร์ธานี Functional analysis of HbMlo12 in powdery mildew infection and stress response in the rubber tree Hevea brasiliensis Muell Arg. SUDDEN DIEBACK OF YOUNG BUDDED RUBBER (Hevea brasiliensis Muell. Arg.) PLANTS AT NURSERY STAGE UNDER HOT AND DRY CLIMATIC CONDITIONS Identification of Resistance of Hevea brasiliensis Clones to Corynespora Leaf Fall Disease
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