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Effects of Seed Size on the Rate of Germination, Early Growth and Winter Survival in Four Oaks Species  

Shin, Jeong-Hoon (Department of Biology, Kongju National University)
You, Young-Han (Department of Biology, Kongju National University)
Publication Information
Korean Journal of Environmental Biology / v.29, no.4, 2011 , pp. 274-279 More about this Journal
Abstract
In order to know the effect of seed size on the early plant life history, we measured the rate of germination, early growth and winter survival of four oak species with different acorn size (large, medium and small). The mean germination rate was higher in the larger seed species ($Q.$ $acutissima$ and ($Q.$ $variabilis$) than those of the smaller seed species ($Q.$ $aliena$ and $Q.$ $serrata$). Within $Q.$ $variabilis$, the germination rate decreased with larger acorn size class but that of rest other species was not significantly affected by the acorn size. The early mean growth rate decreased with acorn size in the order of $Q.$ $acutissima$, $Q.$ $variabilis$, $Q.$ $aliena$ and $Q.$ $serrata$. The early mean growth rate was higher in large or medium size than in small size of $Q.$ $acutissima$ and $Q.$ $variabilis$, but it showed no difference with acorn size in $Q.$ $aliena$ and $Q.$ $serrata$. Survival rate in winter was the highest in the medium acorn size among 4 oak species, the seedling of $Q.$ $serrata$ and $Q.$ $variabilis$ did not survive in both large and small acorn size. These results indicate that seed size influences a different effect on the early plant life history stage.
Keywords
Quercus; acorn; weight; seedling; low temperature;
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Times Cited By KSCI : 6  (Citation Analysis)
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