Isozyme variation in Monochoria korsakowii Regel et Maack and M. vaginalis (Burm. f.) Kunth (Pontederiaceae)
Isozyme analysis by starch gel electrophoresis was used to quantify the genetic variability within and among Japanese populations of M. korsakowii and M. vaginalis. Ten populations of M. korsakowii and fifty populations of M. vaginalis were investigated. Of the three enzyme systems examined, six loc...
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| Published in | Journal of Weed Science and Technology Vol. 41; no. 3; pp. 255 - 263 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | Japanese |
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The Weed Science Society of Japan
25.10.1996
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| Abstract | Isozyme analysis by starch gel electrophoresis was used to quantify the genetic variability within and among Japanese populations of M. korsakowii and M. vaginalis. Ten populations of M. korsakowii and fifty populations of M. vaginalis were investigated. Of the three enzyme systems examined, six loci were identified in the two species. One locus was monomorphic and five loci were polymorphic in M. korsakowii. Two loci were monomorphic and four loci were polymorphic in M. vaginalis (Fig. 1 and Table 5). Genetic variability was larger in M. korsakowii populations than in the M. vaginalis ones. M. korsakowii exhibited a higher total genetic diversity (HT=0.333) and higher intrapopulational genetic diversity (HS=0.227) than other outcrossing species reported by Loveless and Hamrick. It is assumed that factors such as breeding systems and local environmental conditions, individually or together, can affect the degree of genetic variability in populations of M. korsakowii and M. vaginalis. |
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| AbstractList | Isozyme analysis by starch gel electrophoresis was used to quantify the genetic variability within and among Japanese populations of M. korsakowii and M. vaginalis. Ten populations of M. korsakowii and fifty populations of M. vaginalis were investigated. Of the three enzyme systems examined, six loci were identified in the two species. One locus was monomorphic and five loci were polymorphic in M. korsakowii. Two loci were monomorphic and four loci were polymorphic in M. vaginalis (Fig. 1 and Table 5). Genetic variability was larger in M. korsakowii populations than in the M. vaginalis ones. M. korsakowii exhibited a higher total genetic diversity (HT=0.333) and higher intrapopulational genetic diversity (HS=0.227) than other outcrossing species reported by Loveless and Hamrick. It is assumed that factors such as breeding systems and local environmental conditions, individually or together, can affect the degree of genetic variability in populations of M. korsakowii and M. vaginalis. |
| Author | Itoh, K Kusanagi, T Wang, G. (Kyoto Univ. (Japan). Coll. of Agriculture) |
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| References | 9) Morishima, H. and J. C. Glaszmann 1991. Current status of isozyme gene symbols. Rice Genet. Newslt. 7, 50-57. 12) 内田萬二 1955. コナギの自花交合受粉. 採集と飼育 17, 34-37. 11) Nei, M. 1978. Estimation of average heterozygosity and genetic distance from a small number of individuals. Genetics 89, 583-590. 6) 小荒井晃・森田弘彦 1996. 採種地を異にするコナギでのベンスルフロンメチル感受性の差異. 雑草研究 41 (別号 I), 124-125. 2) 五條堀孝・斉藤成也共訳 1990. 分子進化遺伝学. 培風館, 東京. 16) Wang, G. X., Y. Yamasue, T. Kusanagi and K. Itoh 1996. Determinants of outcrossing rate in two paddy weeds. Monochoria korsakowii and M. vaginalis (Pontederiaceae). Abstracts. The 10th Anniversary of SSSB, International Symposium: Differentiation Patterns of Plant Populations and Adaptive Mechanisms p. 41. 10) Nei, M. 1973. Analysis of gene diversity in subdivided populations. Proc. Natl. Acad. Sci. U. S. A. 70, 3321-3323. 15) Wang, G. X., R. Miura and T. Kusanagi 1995. The enantiostyly and the pollination biology of Monochoria korsakowii (Pontederiaceae). Acta Phytotax. Geobot. 46, 55-65. 3) Hamrick, J. L., Y. B. Linhart and J. B. Mitton 1979. Relationships between life history characteristics and electrophoretically detectable genetic variation in plant. Ann. Rev. Ecol. Syst. 10, 173-220. 4) 石川隆二 1994. イネのアイソザイムに関する遺伝育種学的研究. 弘前大学農学部学術報告 57, 105-180. 7) 古原洋・山下英雄・山崎信弘 1996. 北海道における水田雑草ミズアオイのスルホニルウレア系除草剤抵抗性. 雑草研究 41 (別号 I), 236-237. 14) 汪光煕・草薙得一・伊藤一幸 1996. ミズアオイとコナギの開花特性. 雑草研究 41 (別号 I), 186-187. 8) Loveless, M. D. and J. L. Hamrick 1984. Ecological determinants of genetic structure in plant populations. Ann. Rev. Ecol. Syst. 15, 65-69. 5) 河野昭一・野口順子・中山修一 1985. スズメノカタビラの生態型分化 I. 北陸地方の集団解析. 雑草研究 30 (別号 I), 87-88. 1) Glaszmann, J. C., B. G. de los Reyes and G. S. Khush 1988. Electrophoretic Variation of Isozymes in Plumules of Rice (Oryza sativa L.) -A Key to the Identification of 76 Alleles at 24 Loci. IRRI Research Paper Series No. 134, 2-14. 13) 汪光煕 1996. ミズアオイ属植物の分類と雑草生物学的研究. 京都大学博士学位論文. |
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| SubjectTerms | ANATOMIA DE LA PLANTA ANATOMIE VEGETALE genetic variability GENETIC VARIATION ISOENZIMAS ISOENZYME ISOENZYMES isozyme analysis M. vaginalis Monochoria koysakowii PLANT ANATOMY polymorphism PONTEDERIACEAE VARIACION GENETICA VARIATION GENETIQUE |
| Title | Isozyme variation in Monochoria korsakowii Regel et Maack and M. vaginalis (Burm. f.) Kunth (Pontederiaceae) |
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