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 Researcherดร. สรรพสิทธิ แปลงแก้ว, อาจารย์ที่ทำงาน:ภาควิชาเกษตรและทรัพยากร คณะทรัพยากรธรรมชาติและอุตสาหกรรมเกษตร สาขาที่สนใจ:Swine genetics, Genomic evaluation, Genomic selection, Genome-wide association study Resume |
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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Respiration Rate and a Two-component Model of Growth
and Maintenance Respiration in Leaves of Rubber
(Hevea brasiliensis Muell. Arg.)) ผู้เขียน: Krissada Sangsing,  ดร.พูนพิภพ เกษมทรัพย์, รองศาสตราจารย์ , ดร.ศรปราชญ์ ธไนศวรรยางกูร, รองศาสตราจารย์ , Eric Gohet, Philippe Thaler สื่อสิ่งพิมพ์:pdf AbstractThe future information of leaf selection for studies on respiration rate and leaf greenness, and
position variations of different rubber clones was investigated. Respiration rate and greenness were nonsignificantly
different between leaf position (leaf No. 1, 2 and 3) and leaflet position (left, middle and
right), but they were significantly different among clones. During leaf expansion, respiration rate per unit
leaf area declined with leaf age, but the differences were not obviously detected among clones. Leaf
expansion rate was sigmoid shaped curves, and increased with leaf age. Relative growth rate on an area
basis (RGRarea) of leaf declined with age. At fully expanded leaf of PB 235, RRIM 600, PB 260 and GT
1 clones, the greatest leaf area was found in PB 235, and the least in GT 1. For crop growth model
development and environmental response studies, a two- component model of growth and maintenance
respiration was used in leaves of rubber. Growth respiration coefficients were non-significantly different
(ranging from 4.928 ? 105 to 5.678 ? 105 mmolCO2 m-2) among 4 rubber clones. While, the greatest
maintenance coefficients were in RRIM 600, PB 60, GT 1, the least was in PB 235. In particular, strong
positive correlation between respiration rate and RGRarea was found for all clones. Maintenance
respiration was weakly related with leaf temperature, but growth respiration was not significantly related
with leaf temperature. |
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