YANG Guang,ZHANG Hui-jun,SONG Shu-hong,et al.Comparison on Some Root Related Traits of Super-High-Yielding Soybean[J].Soybean Science,2013,32(02):176-181.[doi:10.3969/j.issn.1000-9841.2013.02.008]
超高产大豆根系相关性状的比较研究
- Title:
- Comparison on Some Root Related Traits of Super-High-Yielding Soybean
- 文献标志码:
- A
- 摘要:
- 为明确大豆根系相关性状与产量的关系，为高产品种选育和栽培提供理论依据，在大田条件下，对超高产大豆品种和普通大豆品种的根系活力、根系伤流量、根系干重、产量及倒伏指数进行了比较研究。结果表明：R4～R6期根系活力、根系伤流量和根系干重均处于较高水平。R1～R6期超高产大豆品种根系活力、根系伤流量、根系干重均极显著高于普通大豆品种。V3～R4期施用适量或R6～R8期施用高量的磷酸二铵对3个根系性状具有显著促进作用，但施肥对大豆产量和倒伏指数影响不显著。R1～R6期根系活力、根系伤流量、根系干重三者间均呈显著正相关，且均与产量呈显著正相关，而与倒伏指数呈显著负相关。与普通大豆品种相比，在R1～R6期超高产大豆品种根系性状优势明显，这可能是其产量较高的原因之一。
- Abstract:
- Super-high-yielding soybean cultivar needs more nutrients and water than common cultivar to produce more biomass for high grain yield.The super highyielding soybean may have specific root morphology and function to coordinate root and shoot.However,fewer research have been done for the root related traits because of soil restrictions.For the purpose of understanding the relationship of soybean root traits and yield, provide basis for high yield breeding and cultivation,the comparative study on root activity,root bleeding sap,root dry weight,yield and lodging score of superhighyielding cultivar and common soybean cultivar was carried out under field condition.The results showed that soybean cultivars maintained higher root bleeding sap,root dry weight and root activity at R4 to R6 stage.From R1 to R6 stage,super-high-yielding soybean cultivar had a significantly higher root activity,root bleeding sap and root dry weight,compared with the common soybean cultivar.The medium and high levels of fertilization of diammonium phosphate significantly promoted the three measured root traits from V3 to R4 and R6 to R8,respectively,while fertilizer had no significant impact on yield and lodging score.Root activity,root bleeding sap and root dry weight from R1 to R6 stage showed a significant positive correlation.From R1 to R6 stage root activity,root bleeding sap,and root dry weight were significantly positively correlated with yield and negatively correlated with lodging score.Super-high-yielding soybean cultivar had a stronger root physiological activity than common cultivar at R1-R6 stages,which was one of reasons that super-high-yielding cultivar had a higher productivity.
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备注/Memo
?国家自然科学基金（31071355）；辽宁省科技厅攻关项目（2011201020）；国家“十一五”科技支撑计划（2011BAD35B06-2）。