Growing environment in Suaeda japonica at different distributed areas
2004
Noguchi, S. (Saga Univ. (Japan). Faculty of Agriculture) | Tsutsumi, K. | Tanaka, A. | Tanimoto, S.
Suaeda japonica, a member of the family Chenopodiaceae, is a halophyte that grows at the shore of the Ariake Sea in Japan. This plant presumably possesses high salt resistant nature, thus, we examined the mechanisms of salt tolerance and tried to create salt-resistant crops. The most widely distributed area in S. japonica is the conservation area at Higashiyoka, Saga Prefecture in Japan, the seeds may be carried out at high tide to the offing tidak flat and middle reaches of Hattae River (point A). In the present study, using S. japonica plants grown at 3 points, we examined chlorophyll (chl) contents, seed germination under salt stress. And we analysed various ion contents in plants, soil and water. The highest chl content was exhibited in the plants grown at point A, and the seed germination was suppressed by salt stress in the seeds from plants grown at the A. The Na* contents in plants, water and soil were lowest at the A. Furthermore, the contents of K+, PO43-, NO2- and NO3- were analysed. According to these examinations, many knowledges seemed to accumulated for original physiological and/or ecological nature of the halophyte S. japonica, and for molecular ecological researches of salt tolerant nature.
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