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Classification of the Genus Lilium Native to Korea by Pollen Size  

Nam, yukyeong (Dept. of Environmental Landscape, Sangmyeong University)
Park, Ki-Bae (Center for Research Facilities, Hankyong National University)
Lee, Jin Hee (Dept. of Environmental Landscape, Sangmyeong University)
Publication Information
FLOWER RESEARCH JOURNAL / v.18, no.1, 2010 , pp. 62-65 More about this Journal
Abstract
This study was carried out to estimate the size and exine pattern of pollen grains in seven species of the genus Lilium by using scanning electron microscope. Exine of pollen grains, which were all monad, took the prolate forms with a pollen aperture. However, there were various L/W ratio between length (L) and width (W) of pollen grains among selected Lilium species. The pollen of L. distichum was oblong shape which had the highest L/W ratio of 2.59. On the other hand, that of L. concolor var. partheneion was broadly elliptical shape close to circle which had the lowest L/W ratio of 1.82. The surface patterns of exine were reticulate in all Lilium species that have showed diverse forms in their lumina. Pollen length and width in L. lancifolium had the greatest value, 115.90 and $46.54{\mu}m$, respectively, in comparison with those of L. tsingtauense, 70.33 and $38.72{\mu}m$, respectively. Except L. distichum and L. leichtlinii var. maximowiczii which had a similar pollen length within standard errors, the others in Lilium species showed different sizes, respectively. Therefore, these results indicated that pollen length could be a better standard for the classification of Lilium species than exine surface patterns or pollen dissection area.
Keywords
exine; pollen dissection area; pollen length; pollen width;
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