El-Sheikh A M, Broyer T C, Ulrich A
Department of Soils and Plant Nutrition, University of California, Berkeley, California 94720.
Plant Physiol. 1971 May;47(5):709-12. doi: 10.1104/pp.47.5.709.
This study concerns the selective absorption of K and Rb or of K and Na by intact sugar beet (Beta vulgaris) plants from modified conventional nutrient solutions over an extended period of plant growth. Long term results agreed with those of short term experiments by other investigators using excised root systems and simple salt solutions. Potassium and Rb were mutually competitive in their absorption. High selectivity of K relative to Na absorption was observed. Sodium was excluded during the early growth period of sugar beets.
本研究关注完整甜菜(Beta vulgaris)植株在较长的生长周期内,从改良的常规营养液中对钾和铷或钾和钠的选择性吸收。长期结果与其他研究人员使用离体根系和简单盐溶液进行的短期实验结果一致。钾和铷在吸收过程中相互竞争。观察到钾相对于钠的吸收具有高选择性。在甜菜生长早期,钠被排除在外。