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편백 유영 인공림의 임영에 따른 물질생산 및 무기양료 분배
박인협(In Hyeop Park),임도형(Do Hyung Lim),유석봉(Suk Bong Ryu) 한국산림과학회 2000 한국산림과학회지 Vol.89 No.1
Four Chamaecyparis obtusa plantations of 6, 9, 14, and 20 years were studied to investigate biomass, net production and nutrient distribution. There was wide difference in DBH and height growth of the stands according to site and soil conditions. Total biomasses of the stands of 14 years and 20 years located in gentle slopes and good soil conditions were 96.2t/㏊ and 145.0t/㏊, and total net productions of those were 22.4t/㏊/yr and 23.5t/㏊/yr, respectively. Total biomasses of the stands of 6 years and 9 years located in steep slopes and poor soil conditions were 0.7t/㏊ and 14.0t/㏊, and total net productions of those were 0.3t/㏊/yr and 4.7t/㏊/yr, respectively. As stand age increased, the ratios of stem wood and branches to total biomass and total net production increased, while the ratios of leaves to total biomass and total net production and the ratios of roots to total biomass decreased. Concentrations of N, P, K and Mg were greatest in the leaf and concentration of Ca was greatest in the stem bark. As stand age increased, N concentrations of the stem bark, branch, dead branch and root and K concentration of the branch decreased, while Ca concentration of the stem bark increased. Nutrient contents of the whole tree were great in order of N, K, Ca, Mg and P.
꾸지뽕나무의 ITS 영역 염기서열 분석에 의한 유연관계 분석
오찬진 ( Chan Jin Oh ),이솔 ( Sol Lee ),권용석 ( Yong Seok Kwon ),유한춘 ( Han Choon You ),유석봉 ( Suk Bong Ryu ),위안진 ( Anjin Wi ) 전북대학교 농업과학기술연구소 2012 농업생명과학연구 Vol.43 No.2
The comparison of the internal transcribed spacer (ITS) sequences of nuclear rDNA of 8 distingushed male and female of Cudrania tricuspidata (Call.) Bureau were made for the genetic analysis. The length of total nuclear DNA was showed 717 nt and including 231 nt of ITS1 gene, 158 nt of 5.8S gene and 239 nt of ITS2 gene. Based on the sequence analysis of amplified ITS gene region, the homologies were showed 100% from male and female of Naju, male of Jinu, Hongseong, Boryeong and female of Goheung plant. However, these palnts showed 99.8% and 99.4% homologies with those of female of Gunsan, male of Sunchang and female of Sunchang plants, at nucleotide level, respectively. The female and male of Imsil plants showed 99.8% homologies. The homologies between Cudrania tricuspidata and Molrus alba (Genebank accession number FJ599759) palnts showed 66.7%. The results suggested that Cudrania tricuspidata were distinct from Molrus alba and showed very close relationship between Cudrania tricuspidata plants at the nucleotide level of ITS region.