钙胁迫对不同基因型花生品种生长发育的影响

采用砂培方法,在高钙200m g/L和低钙40m g/L处理条件下,对12个不同基因型花生品种的根系、植株生长和产量进行观察测定,筛选出耐低钙胁迫的花生品种。结果表明,与高钙处理相比,钙胁迫条件下,大部分花生品种的主茎高、干物重、单株果数、主根长、根干重、单株产量等均明显降低,且不同花生品种间降低幅度具有明显差异。初步筛选出两个耐低钙能力较强的花生品种:汕油21和汕油27;花生荚果产量、植株地上部干物重和根干重可作为鉴别花生品种耐低钙能力的有效指标。

Effects of calcium stress on the growth and development of peanut varieties with different genotypes

As treated with 200mg/L and 40mg/L calcium in sand culture,the root,plant growth and yield of 12 different genotypes of peanut varieties were studied to choose the varieties tolerance to low calcium.The results showed that with the lower calcium treatment of 40mg/L,the height of main stem,dry matter weight,pods of per plant,length of main root,dry weight of root and yield per plant were obviously decreased and the difference of decreasing range among different varieties were obvious,as compared with the higher calcium treatment of 200mg/L.Moreover,it is concluded that two peanut varieties Shanyou 21 and Shanyou 27 were of stronger tolerance to lower calcium,and the yield of pod,dry matter weight of above-ground plant part and dry weight of root could be used as the indexes to evaluate the ability of tolerance to low calcium for peanut varieties.