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동위효소분석에 의한 테다소나무 ( Pinus taeda L . ) 클론의 식별
류장발,나천수 ( Jang Bak Ryu,Chun Soo Na ) 한국산림과학회 1987 한국산림과학회지 Vol.76 No.4
Megagametophyte tissues from seeds of 45 loblolly pine clones were subjected to horizontal starch-gel electrophoresis. The resulting gels were tested for activity of five enzyme systems (GOT, SDH, PGM, MDH, and AP). Isozymes observed were under control of 11 loci. All 45 clones could be identified with unique genotypes at above 10 loci.
포플러류의 식물체와 미토콘드리아의 동위효소 분석에 의한 몇 동위효소의 세포소기관적 (細胞小器管的) 위치
류장발,노은운,손두식 ( Jang Bal Ryu,Eun Woon Noh,Doo Sik Son ) 한국산림과학회 1991 한국산림과학회지 Vol.80 No.1
Subcellular location of five isozymes in Populus species was studied by isozyme analysis with plant and mitochondria. Isozymes analyzed were ADH, 6-PGD, MDH, PGI, and Diaptrorase. ADH seems to be cytosolic isozyme encoded with nuclear genes at one locus, while 6-PGD seems to be mitochondrial one. MDH showed three hands in cytosol and four other bands in mitochondria. Three cytosolic hands were showed for PGI. Diaphorase showed one mitochodrial band and two cytosofic bands which seemed to the encoded by nuclear genes at one locus.
우리나라에서의 임목육종에 (林木育種) 의한 생산성 증가
류장발,심상영 ( Jang Bal Ryu,Sang Yung Shim ) 한국산림과학회 1988 한국산림과학회지 Vol.77 No.4
Improvement of productivity by forest tree breeding work in Korea was estimated for a few important tree species. Progenies of 17 plus trees of red pine (Pines densiflora) outgrew by 57 percentage compared with progenies of unselected trees at age 15. If best three families are selected among the 17, more than double in volume grow-th is expected. The hybrid Pinus rigida × P. taeda showed more than double volume growth compare to P. rigida at a southern plantation at age 15. However, the superiority of the hybrid decreased at northern plantations, mainly because of low coldhardiness of the hybrid. At a northern plantation, the hybrid grew less than the P. rigida on upper hill, while the hybrid grew much better than the P. rigida on flat area. Another hybrid Populus alba × P. glandulosa grew faster than both parents by two to two and half times according to planting sites at age 10. Introduction of Pinus rigida also showed increased volume growth. Volume increase by selection of best five provenances among 45 at age 12 was estimated as 53 percent compare to progenies of plus trees in Korea, Additional 19 percent of volume increase was expected by selection of the best families within the best provenances. Annual production of chestnuts reached about 70,000 M/T by planting resistant clones to chestnut gall wasp (Dryocosmus kuriphilus), which killed almost all susceptible trees. Although polyploid trees and mutants have been produced by colchicine treatments in over 10 tree species, none of them is economically important Remarkable improvement of productivity is expected by biotechnology in future through selection, hybridization, introduction of foreign genes at cell, cell organelle and gene level, and gene transformation. At present, mass propagation of superior planting materials by tissue culture will increase the productivity.
침엽의 수지구 (樹脂溝) 위치에 의한 우리나라 소나무의 이입교잡현상 (移入交雜現象) 연구
류장발,홍성호,정헌관 ( Jang Bal Ryu,Sung Ho Hong,Hun Gwan Chung ) 한국산림과학회 1985 한국산림과학회지 Vol.69 No.1
Introgressive hybridization of Pinus densiflora in Korea was investigated by examining the position of resin ducts in 4,992 trees from 67 populations. Judging that P. densiflora has only external resin ducts, P. thunbergii only medial resin ducts, and any tree which has even one needle with external and medial resin ducts is hybrid, hybrids are found at all populations investigated. As variation in position of resin ducts was found among needles on a tree, the number of needles investigated from a tree affects judgment of the tree`s hybridity. Therefore, hybridity seems to be judged by many traits rather than by the single trait, position of resin ducts. Seed production by artificial pollination between P. densiflora and P. thunbergii was very poor, i.e. one full seed from five female flowers or from two mature cones. This poor seed production, in addition to the low hybrid vigor, if any, seems to make the artificial pollination between the two species for mass-production of seeds for planting impractical.