<FONT face="Verdana">Effects of Grain Protein Content Selection on Protein Content and  Key  Enzymes   Activities for Nitrogen Metabolism in Rice Hybrid Progenies</FONT>

HUANG Xing,LI Xiao-guang, LIU  Hong-liang, XU  Mei-lan, ZHANG  Feng-zhuan,ZHANG Zhong-chen,JIN Zheng-xun*

doi:10.3969/j.issn.1001-7216.2009.06.16

2009 , Vol. 23 >Issue 6: 657 - 660

DOI: https://doi.org/10.3969/j.issn.1001-7216.2009.06.16

研究简报

Effects of Grain Protein Content Selection on Protein Content and Key Enzymes Activities for Nitrogen Metabolism in Rice Hybrid Progenies

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Agricultural College, Northeast Agricultural University，Harbin 150030， China; *Corresponding author, E-mail: zxjin326@hotmail.com

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2009-11-10

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Abstract

The japonica parents (Tong 769 and Xixuan 1) and their hybrid progenies, significantly differed in protein content in grains, were investigated to reveal the activities of protease in leaves and glutamine synthetase in grains and the dynamic alteration of soluble protein content in grains during grain filling. The results showed that the protein content in rice of the parents was near to each other, however, hybrid progenies with different contents of protein in grains and higher or lower activities of protease in leaves and glutamine synthetase in grains were acquired by consecutively directed selection of the grain protein content in their hybrid progenies. Moreover, the enzyme activity and protein content in grains exceled their parents during grain filling. The content of protein in rice and the activitiy of protease in leaves were positively related, and the content of soluble protein and activity of glutamine synthetase in grains were negatively related to some extent.

Key words： rice; hybrid progeny; protein content; nitrogen metabolism

Cite this article

HUANG Xing,LI Xiao-guang, LIU Hong-liang, XU Mei-lan, ZHANG Feng-zhuan,ZHANG Zhong-chen,JIN Zheng-xun* . Effects of Grain Protein Content Selection on Protein Content and Key Enzymes Activities for Nitrogen Metabolism in Rice Hybrid Progenies[J]. Chinese Journal OF Rice Science, 2009 , 23(6) : 657 -660 . DOI: 10.3969/j.issn.1001-7216.2009.06.16

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