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Water Uptake and Germination of Soybean Seed as Affected by Soaking Condition  

배경근 (㈜풀무원기술연구소)
남승우 (경북대학교 농업생명과학대학식물생명과학부)
김경남 (㈜풀무원기술연구소)
신상진 (㈜풀무원기술연구소)
황영현 (경북대학교 농업생명과학대학식물생명과학부)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.47, no.3, 2002 , pp. 244-249 More about this Journal
Abstract
Varietal difference in seed shape and size, water absorption rate, and soybean sprouts was compared. In general, soybean seeds of yellow seed-coat and spherical shape with 100 seeds of 9.0$\pm$2g were evaluated as the best ones; Pungsannamulkong out of tested varieties was considered to be the best one in these respect. Varietal difference in water absorption yale depending on the soaking duration and temperature was recognized; Jungeri and Jillin 3 showed higher water absorption rate at higher temperature but it was completely vice versa for Pungsannamulkong. It took about 15 hours(soaking at 2$0^{\circ}C$) for seed shape of size to grow to 10mm in length. Maximum enlargement in thickness of soybean seeds was made right after the completion of repeated soaking-drying treatment but three hours and nine hours soaking were needed for one time-soaking and non-soaking treatment, respectively. Varietal difference in germination rate was recognized between one hour's soaking at 2$0^{\circ}C$ and two hour's soaking at 15$^{\circ}C$ The growth rate for Jillin 3 was excellent at all soaking methods and temperatures while three hours of soaking was the best for Jungeril and Pungsannamulkong, regardless of soaking temperatures. The growth of hypocotyl length showed somewhat faster in repeated soaking-drying than one time-soaking and non-soaking while the increase of hypocotyl thicknes was better in one-time soaking than repeated soaking-drying.
Keywords
soybean; sprout; water absorption rate; soaking duration; soaking temperature; soaking-drying treatment;
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