|Table of Contents|

Changes of Root Bleeding Sap Weight and Its Correlation with Leaf Net Photosynthetic Rate of Soybean Cultivars Released in Different Years(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2011年05期
Page:
795-799
Research Field:
Publishing date:

Info

Title:
Changes of Root Bleeding Sap Weight and Its Correlation with Leaf Net Photosynthetic Rate of Soybean Cultivars Released in Different Years
Author(s):
SUN Miao-miaoDENG Hong-zhongXU Ke-zhangZHANG Zhi-anLI Da-yongXU Zhong-weiYUAN Ye
Agronomy College,Jilin Agricultural University,Changchun 130118,Jilin,China
Keywords:
SoybeanRootBleeding sap weightNet photosynthetic rate
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2011.05.0795
Abstract:
In order to understand the changes of root bleeding sap weight(BSW)and the correlation between root activities and leaf net photosynthesis during the genetic improvement,root BSW and leaf net photosynthetic rate(Pn)were measured at flowering(R2),pod bearing(R4)and seed filling(R6) stage with 22 soybean varieties bred in Jilin province from 1923 to 2004.The results showed that BSW was significantly or very significantly positive correlated with released years at R2,R4 and R6 stage in 2010,while didn’t reach the significant level in 2009.Two years average of BSW showed significant positive correlation with released year at R4 stage.The genetic improvement of soybean cultivars had resulted in the increase of root BSW.The maximum and minimum root BSW was determined at R4 and R6 stage,respectively.Root BSW were positive correlated with net photosynthetic rate(Pn)significantly at R2 and R4 stage during the two years.The results suggested that root BSW at R2 and R4 stage could be as an reference index of leaf Pn.

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Last Update: 2014-08-16