Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Fruit wall anatomy of the genus Krigia (Asteraceae, Lactuceae) and their taxonomic implications

Krigia속의 과피의 해부학적 구조와 분류학적 의미

  • Lee, Bok Won (Department of Biology, Graduate School, Kyungpook National University) ;
  • Park, Ji Kuk (Department of Biology, Graduate School, Kyungpook National University) ;
  • Pak, Jae-Hong (Department of Biology, Graduate School, Kyungpook National University)
  • 이복원 (경북대학교 자연과학대학 생물학과) ;
  • 박지극 (경북대학교 자연과학대학 생물학과) ;
  • 박재홍 (경북대학교 자연과학대학 생물학과)
  • Received : 2004.10.21
  • Accepted : 2004.12.07
  • Published : 2004.12.30
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Abstract

We researched fruit wall anatomical characters about the seven taxa of Krigia and the nearest one relative, Nothocalais cuspidata by making use of the fruit wall anatomy, and inferred systematical similarity. Among these characters, all species of the genus Krigia has identical characters in the shape of fruit and the number of rib, but showed specific differences in the shape of costa, the numbers of libriform fiber cell layers and fiber-sclereid cell layers in mesocarp, and development degree in these characters. Krigia biflora, K. cespitosa, K. occidentalis and K. wrightii have well developed libriform fiber cell, but K. dandelion, K. montana and K. virginica have undeveloped libriform fiber cell, and mostly consist of fiber-sclereid cell layers. According to the fruit wall anatomical characters, K. biflora which belonged to sect. Krigia in the previous classification system is more similar to sect. Cymbia than sect. Krigia.

Krigia속 7종 모두와 근연속인 Nothocalais cuspidata 1종에 대해 과피 해부학적 형질을 조사하여 분류학적 유연관계를 추론하였다. 과피 해부학적 형질 중 과피의 모양, 늑의 수는 Krigia속 모든 종이 같은 형질을 공유하고 있으나, costa 의 모양, costa와 intercosta에서 중과피를 이루는 libriform 섬유세포와 fiber-sclereid 세포층의 수와 이들 세포층의 발달정도가 종간에서 차이점이 나타났다. Krigia biflora, K. cespitosa, K. occidentalis와 K. wrightii는 costa와 intercosta에서 libriform 섬유세포가 잘 발달되어있는 반면에 K. dandelion, K. montana와 K. virginica는 잘 발달되어있지 않고, 대부분 fiber-sclereid 세포로 이루어져있다. 이전 분류체계에서 Krigia 절에 속했던 K. biflora는 과피 해부학적 형질상의 차이로 볼 때 Cymbia절에 더 많은 유사성을 가지고 있다.

Keywords

Acknowledgement

Supported by : 환경부

References

  1. Chinnappa, C. C. 1981. Cytological studies in Krigia (Asteraceae). Can. J. Genet. Cytol. 23: https://doi.org/10.1139/g81-073
  2. Kim, K. J. 1989. A systematic study of the genus Krigia (Asteraceae: Lactuceae). Ph. D. dissertation, The University of Texas at Austin
  3. Kim, K. J. and B. L. Turner. 1992. Systematic overview of Krigia (Asteraceae-Lactuceae). New York Bot. Gard. Brittonia, 44: 173-198
  4. Kim, K.J. and R. K. Jansen. 1994. Comparisons of phylogenetic hypotheses among different data sets in dwarf dandelions (Krigia, Asteraceae): additional information from internal transcribed spacer sequences of nuclear ribosomal DNA. Pl. Syst. Evol. 190: 157-185 https://doi.org/10.1007/BF00986191
  5. Kim, K. J. and T. J. Mabry. 1991. Phylogenetic and evolutionary implications of nuclear ribosomal DNA variation in dwarf dandelion (Krigia, Lactuceae, Asteraceae). Pl. Syst. Evol. 177: 53-69 https://doi.org/10.1007/BF00937826
  6. Linnaeus, C. 1753. Tragopogon, Leontodon, and Hyoseris. In Species Plantarum 2:789-790, 798-790, and 808-810
  7. Pak, J. H. and S. Kawano. 1990. Biosystematic studies on the genus Ixeris (Compositae-Lactuceae). I. Fruit wall anatomy and its taxonomic implications. Acta Phytotax. Geobot. 41: 43-60
  8. Pak, J. H., J. K., Park. S. S. Whang. 2001. Systematic Implications of Fruit wall anatomy and surface sculpturing of Microseris(Asteraceae, Lactuceae) and Relatives. Int. Jour. Plant Sci. 162: 209-220 https://doi.org/10.1086/317917
  9. Shinners, L. H. 1947. Revision of the genus Krigia Schreber. Wrightia 1: 187-206
  10. Simpson, B. V. 1973. The genera of Lactuceae (Compositae) in the Southeastern United States. J. Arnold Arbor. 54: 42-93 https://doi.org/10.5962/bhl.part.4823
  11. Stebbins, G. L., J. A. Jenkins and M. S. Walters. 1953. Chromosomes and phylogeny in Compositae, tribe Cichoneae. Univ. Calif. Publ. Bot. 26: 401-430
  12. Tomb, S., K. I. Chambers, D. W. Kyhos, A. M. Powell and P. H. Raven. 1978. Chromosome numbers in the Compositae XIV. Lactuceae. Amer. J. Bot. 65:717-712 https://doi.org/10.2307/2442146