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Effect of NaCl Treatment on Absorption of Inorganic Nutrient and Growth in Rice  

정진일 (호남농업시험장)
고종철 (호남농업시험장)
이승엽 (원광대학교 생명자원과학대학)
권태오 (원광대학교 생명자원과학대학)
이동진 (단국대학교 생명자원과학대학)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.48, no.6, 2003 , pp. 465-468 More about this Journal
Abstract
In order to find out the basic information for salt tolerance in vice (Oryza sativa L.), effects of NaCl treatment on absorption of inorganic components and growth were investigated in 6 japonica and 5 tongil varieties and compared to the salt tolerance variety, Annapurna. The absorption of N and $\textrm{P}_2\textrm{O}_5$ was less repressed than that of $\textrm{K}_2\textrm{O}$, MgO, CaO, and $\textrm{Si}\textrm{O}_2$ which were a little affected by NaCl treatment. $\textrm{K}_2\textrm{O}$ was the most highly repressed component in the absorption of inorganic components, followed by MgO, CaO, total-N, $\textrm{P}_2\textrm{O}_5$ and $\textrm{Si}\textrm{O}_2$. $\textrm{Na}_2\textrm{O}$ content was increased about twenty times to the control at 30days after NaCl treatment, and tonsil varieties more than absorbed japonica ones. Dry weight of japonica varieties by NaCl treatment was less reduced than that of tonsil varieties, followed by Seomjinbyeo, Sinseonchalbyeo, Nakdongbyeo, Daechoungbyeo, Dongjinbyeo and Chuchoungbyeo in japonica group, and Milyang30, Gayeabyeo, Jangseongbyeo, Chilseongbyeo and Taebackbyeo in tonsil group. The relationship between dry weight reduction and Na/K ratio showed positively significant correlation in rice.
Keywords
inorganic components; growth; NaCl; rice; salt tolerance;
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