Anatomy and Morphology of Two Hawaiian Endemic Portulaca Species
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
In this study, the vegetative and reproductive morphology and anatomy of two Hawaiian endemic Portulaca species were examined. Specifically, P. molokiniensis and P. sclerocarpa were compared to closely related species in the genus. The comparisons were both qualitative and quantitative, using characteristics of leaves, stems, roots, and fruits. Tissue organizations of vegetative and reproductive parts of the plants were assessed using microtechnique procedures, statistical analysis, and scanning electron microscopy. The most notable features of these two species were (1) the size and frequency of stomata in P. molokiniensis, and (2) the large number of sclerenchymatous cell layers in the thickest fruit walls of P. sclerocarpa. These findings may imply that stomata development in P. molokiniensis and thick fruit wall development in P. sclerocarpa are evolved features of survival. In particular, the development of thickened walls in indehiscent fruits likely has evolutionary implications of ecological tolerance for better adaptation.
Abstract
In this study, the vegetative and reproductive morphology and anatomy of two Hawaiian endemic Portulaca species were examined. Specifically, P. molokiniensis and P. sclerocarpa were compared to closely related species in the genus. The comparisons were both qualitative and quantitative, using characteristics of leaves, stems, roots, and fruits. Tissue organizations of vegetative and reproductive parts of the plants were assessed using microtechnique procedures, statistical analysis, and scanning electron microscopy. The most notable features of these two species were (1) the size and frequency of stomata in P. molokiniensis, and (2) the large number of sclerenchymatous cell layers in the thickest fruit walls of P. sclerocarpa. These findings may imply that stomata development in P. molokiniensis and thick fruit wall development in P. sclerocarpa are evolved features of survival. In particular, the development of thickened walls in indehiscent fruits likely has evolutionary implications of ecological tolerance for better adaptation.
참고문헌 (17)
- Baldwin B G, "Hawaiian angiosperm radiations of North American origin", Ann. Bot, 105, pp.849~879 (2010)
- Carolin R, "A review of the family Portulacaceae", Aust. J. Bot, 35, pp.383~412 (1987)
- Cutler D F, "Plant Anatomy: An Applied Approach", pp.170~191 (2008), Blackwell Publishing
- Evert R F, "Esau’s Plant Anatomy", pp.225~230 (2006), John Wiley & Sons Inc.
- 김인선, "Anatomical and Morphological Features of Seeds in Portulaca", 한국현미경학회지, 42(4), pp.194~199 (2012), 한국현미경학회
- 김인선, "Morphological Features of Pollen Grains in Portulaca", 한국현미경학회지, 43(2), pp.75~80 (2013), 한국현미경학회
- Kim I, "Cytogenetics and hybridization of Portulaca in Hawaii", Syst. Bot, pp.370~377 (1990)
- Kim I, "Reproductive biology and uniform culture of Portulaca in Hawaii", Pac. Sci, 44, pp.123~129 (1990)
- Kim I, "Structural aspects of the leaves of seven species of Portulaca growing in Hawaii", Can. J. Bot, 68, pp.1803~1811 (1990)
- Lee K, "Plant Morphology", pp.83~84 (2012), Life Science Publishing Co.
- Matthews J F, "The systematic significance of seed morphology in Portulaca (Portulacaceae) under scanning electron microscopy", Syst. Bot, 11, pp.302~308 (1986)
- Matthews J F, "The reevaluation of Portulaca pilosa and P. mundula (Portulacaceae)", Sida, 15, pp.71~89 (1992)
- Matthews J F, "The seed surface morphology and cytology of six species of Portulaca (Portulacaceae)", Castanea, 59, pp.331~337 (1994)
- Plaza L, "Micromorphological studies on seeds of Orobanche species from the Iberian Peninsula and the Balearic Islands, and their systematic significance", Ann. Bot, 94, pp.167~178 (2004)
- Stace C A, "Plant Taxonomy and Biosystematics", pp.69~85 (2000), University of Cambridge Press
- Wagner W L, "Manual of the Flowering Plants of Hawaii. Vol. 2.", pp.1070~1075 (1999), University of Hawaii Press
- Yun I K, "Biosystematics and ultrastructure of Portulaca in Hawaii", 박사, pp.1989