지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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The anatomy and morphology of seeds from 10 Hawaiian Portulaca taxa were examined to explore patterns of variation among the taxa, and to evaluate their phylogenetic relationships. Features of seeds were assessed employing microtechnique procedures,statistical analysis, and scanning electron microscopy (SEM). Anatomically, the orientation of embryo was consistent across taxa, and all seeds examined had central nutritive tissue and integuments comprising the peripheral embryo. Seeds were generally small, circular to ovoid in shape, and either smooth or rough-surfaced, with tubercules. Variation in seed size was noted, although minimal within small seeded group. The size of seeds ranged from 0.50~1.26 mm in length, and 0.55~1.34 mm in width, with similar weights. Seeds were distinguished by the sculpture and arrangement of the testa epidermis and the way in which their stellulate-tessellate cells uniquely fi t together. Using a multiple range test (ANOVA), two groups were established by seed characteristics. The SEM also demonstrated morphological differences in testa sculpturing. The results obtained confi rm the usefulness of seed characteristics in the identifi cation of the species examined, and furthermore, allow for the separation of the Hawaiian Portulaca into two groups.
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참고문헌 (19)
참고문헌 신청
Atwater B R / 1980 / Germination, dormancy and morphology of the seeds of herbaceous ornamental plants / Seed Sci. Technol 8 : 523 ~ 573
Baldwin B G / 2010 / Hawaiian angiosperm radiations of North American origin / Ann. Bot 105 : 849 ~ 879
Carolin R / 1987 / A review of the family Portulacaceae / Aust. J. Bot 35 : 383 ~ 412
Chamorro S / 2012 / Pollination patterns and plant breeding systems in the Galapagos: a review / Ann. Bot 110 : 1489 ~ 1501
Kim I / 1990 / Cytogenetics and hybridization of Portulaca in Hawaii / Syst. Bot 15 : 370 ~ 377
Baldwin B G / 2010 / Hawaiian angiosperm radiations of North American origin / Ann. Bot 105 : 849 ~ 879
Carolin R / 1987 / A review of the family Portulacaceae / Aust. J. Bot 35 : 383 ~ 412
Chamorro S / 2012 / Pollination patterns and plant breeding systems in the Galapagos: a review / Ann. Bot 110 : 1489 ~ 1501
Kim I / 1990 / Cytogenetics and hybridization of Portulaca in Hawaii / Syst. Bot 15 : 370 ~ 377
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