不同施磷条件下大豆植株农艺性状与磷效率的关系  

The Relationship Between Agronomic Characters of Soybean Plant and the Phosphorus Efficiency at Different Phosphorus Level Condition

作　　者：张彦丽[1] 谷思玉[1] 许景钢[1] 

机构地区：[1]东北农业大学资源与环境学院,黑龙江哈尔滨150030

出　　处：《中国农学通报》2008年第3期142-146,共5页Chinese Agricultural Science Bulletin

基　　金：黑龙江省教育厅资助项目"大豆基因型适应低磷土壤的根生物学基础"(10551033)

摘　　要：【研究目的】为了寻找直观、简便、可靠的用于磷效率筛选的农艺性状指标,探讨大豆植株农艺性状与磷效率的关系,【方法】试验选用3个"磷低效"大豆基因型HND3、HND17和HND18及"磷高效"大豆基因型HND34、HND37和HND38,采用高、低磷土壤盆栽试验,对大豆基因型磷效率与植株农艺性状的关系进行了研究。【结果】结果表明,在相关分析中,低磷(-P)和高磷(+P)处理的x1(株高)、x4(单株荚数)、x5(单株粒数)、x8(地上部干重)和x9(根干重),(-P)处理x3(节数)和(+P)处理x2(分枝数)与磷效率(籽粒产量)均达到了显著或极显著水平。经逐步回归分析,建立了回归方程:(-P)处理:y=391.629+9.271x1-2.674x2+7.236x4+76.932x9;(+P)处理:y=699.882+3.572x1+22.956x4-191.103x6。在通径分析中,各农艺性状对籽粒产量的重要性依次为:(-P)处理:株高(0.456)>单株荚数(0.360)>根干重(0.267)>分枝数(-0.021);(+P)处理:单株荚数(0.845)>株高(0.126)>每荚粒数(-0.117)。【结论】研究表明,在磷高效大豆基因型筛选中,应该考虑高、低磷条件下株高、单株荚数和根干重的综合表现。[OBJECTIVE]In order to search visual, simple, credible agronomic characters adapted to screen P efficiency, relationship between P efficiency of soybean genotypes and agronomic characters of plant, [METHOD]The three low P efficiency genotypes of soybean, HND3, HND17 and HND18, and three P-high efficiency genotypes of soybean, HND34, HND37, HND38, were selected in the experiment. In pot-plant experiment, high P soil and low P soil were used. It was studied to the relationship between P efficiency of soybean genotypes and agronomic characters of plant. [RESULTS]The result showed that x1（plant height）, x4 （pods per plant）,x5 （the number of grain per plant）,x8 （dry weight per plant）and x9（dry weight of root ） in （- P） and （＋P） treatment and x3 （nod number）in （-P） treatment and x2 （branches）in （＋P） treatment arrived at significant level with P efficiency with correlation analysis method. By analyzing with stepwise regression method, the equation was built as follow： （-P） treatment： y=391.629＋9.27 1x1-2.674x2＋7.236x4＋76.932xg, （＋P） treatment： y=699.882＋3,572x1＋22.956 x4-191.103x6. In Pathway analysis, the importance of agronomic characters to grain yield was： （-P） treatment： plant height （0.456）〉 pods per plant （0.360）〉 dry weight of root （0.267）〉 branches （-0.021）, （＋P） treatment： pods per plant （0.845）〉 plant height （0.126）〉 number of seeds per pot （-0.117）. [CONCLUSION]In the study, the integrated representation among plant height, pods per plant and dry weight of root under high P level and low P level should be considered when screening high P efficiency genotype of soybean.

关 键 词：大豆 低磷胁迫 农艺性状 磷效率 

分 类 号：S513.024[农业科学—作物学]