• Korean Journal of Plant Taxonomy
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• v.42 no.1
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• pp.24-39
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• 2012

The palynological study of 31 taxa of Korean Artemisia L. was carried out to evaluate their taxonomic characteristics and to determine the relationships among the taxa. The size and shape of the pollen are not used as characteristics to classify the taxa of Korean Artemisia L., but the granule distribution ands pinule connection on the exine were useful for an interspecific classification and for reflecting the relationship between some taxa. It is considered that Artemisia pollen has evolved from a connected spinule and a nearly psilate surface into 1) a connected spinule and a granule surface, 2) a disconnected spinule and a granule surface, 3) a disconnected spinule and a dense granule surface. These pollen characteristics with external morphological characteristics, a geographical distribution and a somatic chromosome number are considered to be good characteristics for distinguishing the relationship of some taxa, such as the A. japonica group (A. hallaisanensis, A. angustissima, A. littoricola) and the A. sacrorum group (A. sacrorum var. sacrorum, A. sacrorum var. incana, A. sacrorum var. iwayomogi).

• Journal of the Korean Applied Science and Technology
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• v.32 no.1
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• pp.93-99
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• 2015

The aim of this study was to analyze nutritional compositions of rapeseed pollen granules and to determine the possible usage of pollen granules as a yeast culture medium. Rapeseed pollen granules (per 100 g) were consisted of carbohydrate 58.9 g, protein 20.8 g, fat 4.1 g, ash 2.5 g and water 13.7 g. And fructose (13.7 g), glucose (11.1 g), and sucrose (6.6 g) of sugars and K (606.7 mg) and P (603.3 mg) of minerals were highly contained. In addition, free amino acids such as glutamic acid (2,482.4 mg), aspartic acid (2,136.5 mg), lysine (1,648.3 mg), and leucine (1,631.1 mg) were present at a higher level. When liquid medium, which was made from cracked pollen granules (5, 10, 15, 20, 25, 30, and 40 g/L), was tested for yeast culture, liquid medium containing pollen granules over 15 g/L showed higher yeast growth than YPD medium (control). Liquid medium containing both cracked pollen granules (15 g/L) and NaCl (1 ~ 20 g/L) improved yeast growth than the liquid medium without NaCl. In addition, when yeast growth was tested on solid medium made from pollen granules (15 g/L) at $30^{\circ}C$ for 2 days, yeast colonies were equally well-formed like those grown on YPD medium. Overall, rapeseed pollen granules have potential properties on yeast growth and could be used as a primary source for yeast culture.