【摘要】 为了研究不同浓度锗胁迫对不同基因型水稻幼苗生长的影响及在幼苗中的积累状况 ,在 2 5℃恒温培养室内 ,将萌芽的 3个品种的水稻种子浸在含锗量为 0 0 0 ,0 0 5 ,0 1 0 ,0 5 0 ,1 0 0mg L的营养液中培养 ,长至二叶龄幼苗时采样 ,用锗—苏木色精—钒 (Ⅳ )催化波极谱法测定样品中的锗 ,检测下限为 8 6 3× 1 0 - 4 μg mL,回收率为 94 %～ 98%。结果表明 :锗对不同基因型水稻幼苗的根长、苗高和干物质积累量有不同程度的影响。低浓度的锗对幼苗的生长有促进作用 ,高浓度的锗则有抑制作用。同一浓度的锗在不同品种水稻幼苗中的积累量不同更多还原

【Abstract】 To study the effect of the seedlings development of solutions with different concentration of germanium and the accumulation of germanium in seedlings, four kinds of germinating rice seeds were grown in solutions with different germanium concentrations of 0.00, 0.05, 0.10, 0.50, 1.00 mg/L in growth cabinet of constant temperature of 25℃. When the germinating seeds grew into two-leaf seedlings, collected them and made catalytic polarographic determination of germanium by use of the Hematoxylin (C 16H 14O 6·3H 2O)-Ammonium Meta Vanadate (NH 4VO 3) system. The detection limit for germanium is 8.63×10 -4 μg/mL. The recovery rate is between 94% and 98%. The results showed that the effect of germanium in culture solution on the root-length?seedling-height and dry material accumulation changed with the different of the gene. Low concentration of germanium in culture solution increased the growth, yet high concentration of germanium inhibited. The accumulation of germanium in different seedlings changed with the gene.更多还原