摘要
将耐低钾基因型94065-2和不耐低钾基因型95137,以4个水平钾浓度的水培方法对其钾效率进行对照研究.结果表明:低钾条件下,94065-2在部分根系形态参数、根系活性及生物学产量方面均显著优于95137;从钾吸收效率(以吸钾量为标准)来看,两基因型间存在极显著差异,而钾利用效率方面差异则不显著.相对于不耐低钾基因型95137,耐低钾基因型94065-2对缺钾的抗性则主要表现在低钾条件下,有较强的钾吸收能力.
Potassium efficiency of soybean genotypes 94065-2 (tolerance of low potassium) and 95137 (sensitive to low potassium) was studied in solution culture with 4 different potassium concentrations. Some root morphological parameters, root activity and yield of 94065-2 were superior to those of 95137 under low K stress. There was significant difference in efficiency of potassium uptaken between the two soybean genotypes, but no remarkable difference in potassium utilization ratio. The high potassium efficiency of 94065-2 might be attributed to its stronger ability to absorb potassium.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2005年第1期7-10,共4页
Journal of South China Agricultural University
基金
国家973项目资助(G1999011700)
