CAJ | 학술논문

以2份高耐低磷和2份对低磷胁迫高度敏感的自交系为材料，采用河沙盆栽的方法，研究低磷胁迫对玉米地上部生物学性状及伤流性状的影响。结果表明，自交系的总体耐低磷能力为178＞511＞＞492＞9782。低磷胁迫下，植株伤流强度减小，伤流液中的磷、游离氨基酸和可溶性糖的浓度和转运速度都下降，且低磷胁迫对伤流成分转运速度的影响大于对浓度的影响。耐性自交系各性状受低磷胁迫的影响小于敏感自交系。相对伤流强度、伤流液中磷、游离氨基酸和可溶糖的相对转运速度与地上部生物学性状相对值极显著正相关，可以作为玉米耐低磷特性鉴定的生理指标。
이2빈고내저린화2빈대저린협박고도민감적자교계위재료，채용하사분재적방법，연구저린협박대옥미지상부생물학성상급상류성상적영향。결과표명，자교계적총체내저린능력위178＞511＞＞492＞9782。저린협박하，식주상류강도감소，상류액중적린、유리안기산화가용성당적농도화전운속도도하강，차저린협박대상류성분전운속도적영향대우대농도적영향。내성자교계각성상수저린협박적영향소우민감자교계。상대상류강도、상류액중린、유리안기산화가용당적상대전운속도여지상부생물학성상상대치겁현저정상관，가이작위옥미내저린특성감정적생리지표。
Maize inbred lines 511(HT),178(HT),492(HS) and 9782(HS) were potted in sand to study the low-P stress effect on shoot biological characteristics and bleeding traits .The results showed that ,the tolerance to low-P stress was 178>511>>492>9782.Under low-P stress,maize bleeding intensity ,concentration and transport speed of phosphorus ,free amino acid and soluble sugar in xylem sap all decreased ,and the transport speed of the ingredients decreased sharper than corresponding concentration .The influence of low-P stress on the HT lines was less than that of HS lines.The relative bleeding intensity ,relative transport speed of phosphorus ,free amino acid and soluble sugar were all highly significantly correlated with relative values of shoot biological characteristics ,therefore ,these bleeding traits could be taken as physiological index for maize tolerance to low -P stress identification .