Comparison on Some Root Related Traits of Super-High-Yielding Soybean(PDF)
《大豆科学》[ISSN:1000-9841/CN:23-1227/S]
- Issue:
- 2013年02期
- Page:
- 176-181
- Research Field:
- Publishing date:
Info
- Title:
- Comparison on Some Root Related Traits of Super-High-Yielding Soybean
- Author(s):
- YANG Guang1; ZHANG Hui-jun1; SONG Shu-hong2; WANG Wen-bin2; AO Xue1; XIE Fu-ti1
- Keywords:
- Super-high-yield soybean; Root activity; Root bleeding sap weight; Root dry weight
- PACS:
- -
- DOI:
- 10.3969/j.issn.1000-9841.2013.02.008
- 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.
Last Update: 2014-01-23