1 材料与方法
1.1 植物材料和培养条件
1.2 方法
1.3 数据统计
2 结果与分析
2.1 低磷胁迫对王草植株干重和根系内源总ACP活性的动态影响
图1 低磷胁迫下王草植株干重和根系内源总ACP活性A:植株干重;B:根系内源总ACP活性。*表示t-检验-P与+P处理之间差异显著(P<0.05)。 Fig. 1 Plant dry weight and total internal-ACP activity in roots of King grass during Pi starvation A: plant dry weight; B: total internal-ACP activity. *indicates significant differences between -Ptreatment and +P treatment in t-test (P<0.05). |
2.2 不同有机磷处理对王草植株干重和全磷含量的影响
2.3 不同有机磷处理对王草根系总ACP活性的影响
图3 王草在不同磷源处理下的根系总ACP活性A:根系内源总ACP活性;B:根系分泌总ACP活性。不同小写字母表示差异显著(P<0.05)。 Fig. 3 Total ACP activity in roots of King grass under different P treatments A: Total internal-ACP activity of roots; B: Total secreted-ACP activity of roots. Different lowercase letters indicate significant differences (P<0.05). |
图4 王草对不同有机磷利用能力与根系总ACP活性的相关性分析A:植株干重与根系内源总ACP活性的相关性;B:植株干重与根系分泌总ACP活性的相关性。R表示相关系数,N.S.表示无显著相关性(P>0.05)。 Fig. 4 Correlation analysis between root total ACP activity and capacity of organic P utilization in King grass A: Correlation between plant dry weight and total internal-ACP activity in roots; B: Correlation between plant dry weight and total secreted-ACP activity in roots. R represents correlation coefficients, N.S. indicates no significant correlation(P>0.05). |
2.4 不同有机磷处理对王草根系特异ACP活性的影响
图5 王草在不同有机磷处理下的根系特异ACP活性A:根系内源特异ACP活性;B:根系分泌特异ACP活性。不同小写字母表示差异显著(P<0.05)。 Fig. 5 Specific ACP activity in roots of King grass under different organic P treatments A: Specific internal-ACP activity of roots; B: Specific secreted-ACP activity of roots. Different lowercase letters indicate significant differences (P<0.05). |
图6 王草对不同有机磷利用能力与根系特异ACP活性的相关性分析A:植株干重与根系内源特异ACP活性的相关性;B:植株干重与根系分泌特异ACP活性的相关性。R表示相关系数,N.S.表示无显著相关性,*表示显著正相关(P<0.01)。 Fig. 6 Correlation analysis between root specific ACP activity and capacity of organic P utilization in King grass A: Correlation between plant dry weight and specific internal-ACP activity in roots; B: Correlation between plant dry weight and specific secreted- ACP activity in roots. R represents correlation coefficients, N.S. indicates no significant correlation, * indicates significant positive correlation. |
