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http://dx.doi.org/10.14578/jkfs.2013.102.1.136

Optimal Condition for Pollen Germination of Rare and Endangered Forsythia saxatilis  

Han, Sim-Hee (Department of Forest Genetic Resources, Korea Forest Research Institute)
Kang, Hye Jin (Department of Forest Genetic Resources, Korea Forest Research Institute)
Kim, Gil Nam (Department of Forest Genetic Resources, Korea Forest Research Institute)
Kim, Du Hyun (Department of Forest Genetic Resources, Korea Forest Research Institute)
Publication Information
Journal of Korean Society of Forest Science / v.102, no.1, 2013 , pp. 136-142 More about this Journal
Abstract
Optimal condition for pollen germination was suggested as a basic research of flowering physiology in order to identify the characteristics of flowering and seed setting of rare and endangered Forsythia saxatilis Nakai. Pollen samples were collected during flowering time from the end of March to the beginning of April. First, a suitable germination temperature, medium sucrose concentration and germination time were determined for pollen germination and pollen tube elongation in vitro, and then an optimal pH of culture medium. Pollen germination and tube elongation were significantly different among the levels of germination temperature, sucrose concentration and germination time. Interactive effects were observed between germination temperature and time, germination temperature and sucrose concentration, germination time and sucrose concentration. Pollen germination was the highest at $10^{\circ}C$ and increased with the increase of sucrose concentration, whereas it had no relation with germination time. In addition, pollen germination and tube elongation did not increase at more than 15% of sucrose concentration and 24 hours later. Pollen germination was the highest at pH 5 (20.8%) and the lowest at pH 6 (3.8%). In conclusion, $10^{\circ}C$, 15% sucrose and pH 5 were proposed as the optimal condition for pollen germination 24 hours later of pollen culture.
Keywords
pollen germination; pollen tube elongation; germination temperature; sucrose concentration; Forsythia saxatilis;
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Times Cited By KSCI : 6  (Citation Analysis)
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