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Changes of Root Bleeding Sap Weight and Its Correlation with Biomass of Above-ground Organs in Soybean Cultivars Released in Different Years(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2012年04期
Page:
579-583
Research Field:
Publishing date:

Info

Title:
Changes of Root Bleeding Sap Weight and Its Correlation with Biomass of Above-ground Organs in Soybean Cultivars Released in Different Years
Author(s):
SUN biaoSUN Miao-miaoXU Ke-zhangLI Da-yongZHANG Zhi-anWU Zhi-hai
Agronomy College,Jilin Agricultural University,Changchun 130118,Jilin,China
Keywords:
SoybeanBiomassRootBleeding sap
PACS:
S565.1
DOI:
10.3969/j.issn.1000-9841.2012.04.013
Abstract:
We chose 22 popular soybean cultivars released from 1923 to 2004 in Jilin province and investigated the changes of root bleeding sap weight(RBSW) and biomass of above-ground organs(BAGO)during flowering(R2),pod setting(R4) and seed filling(R6) in 2009 and 2010.RBSW and BAGO varied significantly with varieties and both showed increasing trend with released years.A significant positive relationship between RBSW and BAGO was found,suggesting the genetic improvement of soybean cultivars increased the biomass of above-ground organs,at the same time,improved root activities.RBSW at R2,R4 and R6 positively correlated with BAGO,and reached significant level at R4.In addition,RBSW also significant positively correlated with biomass of leaf and stem at R4.The ratio of above-ground biomass to RBSW had no significant changes at different growth stages,suggesting that root and above-ground parts had coordinate evolution trend in genetic improvement of soybean cultivars.

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Last Update: 2014-08-18