Studies on the salt injury in rice plant : III Researches on the uptake of water, NaCl and the symptoms of salt injury in rice seedlings grown with culture solution of various concentrations of NaCl

[摘要] (1) Investigations were made of the absorption of water, NaCl, and the symptoms of its injury in rice seedlings, cultured with nutrient solutions containing various amount s of NaCl. (2) The quantity of absorption and the growth in height showed on the whole the same tendency. In the section of concentration 0 %∼0.1 %, both the absorption and the growth were normal. In the section of 1.0 %∼2.0 %, the absorption was restricted and the growth was hardly detectable. In the section of 0.3 %∼0.7 %, the results lay between those cases. (3) The symptoms of salt injury on the leaf blades indicated the same tendency as the above-mentioned aspects. In the section of 1.0 %∼2.0 %, the whole blades wilted. (4) In each section of investigations, the lost in amount of the salt in the nutrient solution was almost the same as the amount of the salt contained in the blades. That is to say, during the investigation the salt absorbed by the plant mostly accumulated in its leaf blades.

[学科分类] 农业科学（综合）