WANG Ying,LI Xi-huan,ZHANG Cai-ying.Screening of Low-P Tolerant Soybean Landraces from Hebei Growing-areas[J].Soybean Science,2009,28(04):588-594.[doi:10.11861/j.issn.1000-9841.2009.04.0588]
河北大豆地方品种耐低磷种质筛选
- Title:
- Screening of Low-P Tolerant Soybean Landraces from Hebei Growing-areas
- 文章编号:
- 1000-9841(2009)03-0588-07
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 对97份河北省大豆地方品种在2个磷梯度下的苗期耐低磷特性分析表明,植株总生物量、地下部生物量、地上部生物量、地下部磷含量、地上部磷含量、总磷含量和根冠比7个指标的相对值存在较大的基因型差异。经相关分析和逐步回归分析发现,相对总生物量和总磷含量与其它指标间存在显著相关关系,二者比值(植株磷效率)可作为磷胁迫下耐低磷大豆品种的筛选指标。以相对植株磷效率为指标进行聚类分析,将材料分为耐低磷、中间类型和不耐低磷3类,并筛选出“皮狐狸”和“本地黑” 2个高耐低磷大豆品种。
- Abstract:
- In China,soil area with phosphorus lack has reached 151.3 thousand ha,and more than 75% of soil in Hebei growing-areas is short of phosphorus.Soybean needs high phosphorus contents,especially,in seedling stage.Excessive usage of phosphate fertilizer,will aggravate shortage of P resources,destroy entironment and block the sustainable agriculture development.Landraces with better gene which can be used by people are provided with adaptability and diversity.Ninety-seven soybean landraces from Hebei growing-areas were identified for low-P tolerant characters at seedling stage with two phosphorous levels-in both suited P(0.001 molL1)and Low P(0 molL1)fertilizer levels.Screening the Low-P tolerant soybean landraces which adapt to Hebei growing-areas will provide the germplasm and theorical basis to breeding new Low-P tolerant soybean variety by cross-breeding and bio-techniques.Relative values were investigated about total biomass,biomass of roots,biomass of shoots,P contents of roots,P contents of shoots,P contents of whole plant and root-shoot ratio.The results showed that significant difference existed in relative values of the seven traits of 97 soybean landraces.The result of correlation analysis showed that relative value of total biomass and relative value of P contents of whole plant were significantly related to the others except root-shoot ratio.Moreover,the optimum regression equation was Y= 2.257+2.732X1-1737X6-3.556 X7(F= 24.78**,R= 0.645) by stepwise regression analysis,and partial correlation analysis indicated that relative value of total biomass and relative value of total P contents were significantly related.The ratio of the two relative values,i.e.the index of plant phosphorus efficiency,was suggested as reliable screening character to low-phosphorus stress.Furthermore,Relative value of plant phosphorus efficiency ratio (PPER)of soybean genotypes was significant and plant phosphorus efficiency ratio under low P levels are higher than them under suited P levels.All 97 entries could be classified into three groups based on the PPER and two better low-P tolerant soybean varieties,Pihuli and Bendihei,were selected
参考文献/References:
[1]Narang R A,Bruene A,Altmann T.Analysis of phosphate acquisition efficiency in different Arabidopsis accessions[J].Plant Physiology,2000,124:1786-1799.
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备注/Memo
基金项目:河北省自然科学基金资助项目(C2007000474);河北农业大学博士(博士后)、回国人员科研资助项目;转基因生物新品种培育重大专项课题(2009ZX08004-004B)。