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 ที่มา:Provenance and Properties of Gems and Geo-Materials 2010หัวเรื่อง:Surface evolution of synthetic ruby produced by heat treatments |
ที่มา:Provenance and Propoties of Gems and Geo-Materials 2010หัวเรื่อง:Atomic force microscope images of untreated and high pressure high temperature treated diamond samples |
ที่มา:Provenance and Properties of Gems and Geo-Materials 2010หัวเรื่อง:characteristics of alexandrites from different geographic origins |
ที่มา:Provenance and Propoties if Gems and Geo-Materials 2010หัวเรื่อง:Micro-nano scaled surface features of synthetic ruby at different orientations before and after annealing |
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ที่มา:Provenance and Properties of Gems and Geo-Materials Proceedings of the VI. International Symposium Hanoiหัวเรื่อง:Geophysical Approaches to Identify Gemstone Deposit in Different Resources of Thailand |
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ที่มา:"Provenance and Properties of Gems and Geo-Materials
Proceedings of the VI. International Symposium Hanoiหัวเรื่อง:- |
 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Provenance Variation in Seed Morphometric Traits and Growth Performance of Senna siamea (Lam.) Erwin et Barneby at Lad Krating Plantation, Chachoengsao Province, Thailand) ผู้เขียน: ชาคริต ณ ตะกั่วทุ่ง,  ดร.ดำรง พิพัฒนวัฒนากุล, ผู้ช่วยศาสตราจารย์ , นายสุรีย์ ภูมิภมร, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractGenetic variation patterns of Khilek (Senna siamea (Lam.) Erwin et Barneby) an indigenous species with potential as a source of wood energy, were evaluated at the population level. Seed samples were collected from nine provenances throughout Thailand and examined for variations in seed morphometric traits and growth performance in provenance trials in the Lad Krating plantation. Analysis of variance revealed signifi cant differences among provenances in all the study traits except the relative growth rate in some stages of development. The provenance effect as determined by broad sense heritability was 50–83% for seed morphometric traits, 53–85% for height, 33–62% for diameter at ground level, 14–67% for the height relative growth rate and 11–50% for the diameter at ground level relative growth rate. Signifi cant correlations were found within seed mophometric traits and growth characters while the inter-character correlations between seed and growth characters were very weak. At this early stage, it is recommended that the top three most suitable provenances for planting are Potaram (Ratchaburi-seed lot 2002), Muang (Kanchanaburi), and Muaklek (Saraburi). The observed patterns of variation will have important implications for gene conservation and the tree improvement program of the species. |
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