Journal of Integrative Agriculture ›› 2016, Vol. 15 ›› Issue (3): 537-544.DOI: 10.1016/S2095-3119(15)61182-0

• 论文 • 上一篇    下一篇

Charactering protein fraction concentrations as influenced by nitrogen application in low-glutelin rice cultivars

 LI Gang-hua, CHEN Yi-lu, DING Yan-feng, GENG Chun-miao, LI Quan, LIU Zheng-hui, WANG Shao-hua, TANG She   

  1. Jiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.China
  • 收稿日期:2015-03-31 出版日期:2016-03-07 发布日期:2016-03-09
  • 通讯作者: DING Yan-feng, Tel/Fax: +86-25-84396475,E-mail: dingyf@njau.edu.cn
  • 作者简介:LI Gang-hua, Tel/Fax: +86-25-84396475, E-mail: lgh@njau.edu.cn;
  • 基金资助:

    Funding was provided by the Key Technologies R&D Program of China during the 12th Five-Year Plan period (2011BAD16B14, 2012BAD20B05, 2012BAD04B08).

Charactering protein fraction concentrations as influenced by nitrogen application in low-glutelin rice cultivars

 LI Gang-hua, CHEN Yi-lu, DING Yan-feng, GENG Chun-miao, LI Quan, LIU Zheng-hui, WANG Shao-hua, TANG She   

  1. Jiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.China
  • Received:2015-03-31 Online:2016-03-07 Published:2016-03-09
  • Contact: DING Yan-feng, Tel/Fax: +86-25-84396475,E-mail: dingyf@njau.edu.cn
  • About author:LI Gang-hua, Tel/Fax: +86-25-84396475, E-mail: lgh@njau.edu.cn;
  • Supported by:

    Funding was provided by the Key Technologies R&D Program of China during the 12th Five-Year Plan period (2011BAD16B14, 2012BAD20B05, 2012BAD04B08).

摘要: To optimize both grain yield and quality of low-glutelin rice cultivars under N-fertilizer strategies, two-year field experiments involving three low-glutelin rice cultivars (W1240, W1721, W025) and an ordinary rice cultivar (H9405) with five N treatments were carried out to determine the effects of N application rate and genotype on protein fractions contents and Glutelin/Prolamin ratio (Glu/Pro). The difference of protein fraction concentrations affected by N application rate existed in genotypes. Ordinary rice cultivar had a larger increase in glutlein concentration affected by N application rate than low-glutelin rice cultivars did. Glutelin in H9405 had a increase of 30.6 and 41.0% under the N4 treatment (360 kg N ha–1) when compared with N0 treatment (no fertilizer N) in 2010 and 2011 respectively, while all the low-glutelin rice cultivars showed relatively smaller increases for two years. Variance analysis showed no significant effect of N application rate on glutelin in W1240 and W025 while the effects on albumin, globulin and prolamin were significant in low-glutelin rice. What’s more, N treatment had no significant influence on Glu/Pro ratios in low-glutelin rice cultivars while a significant increase in Glu/Pro ratio was observed in ordinary rice cultivar. So low-gultelin rice cultivars showed a different pattern from ordinary rice cultivars when influenced by N application rate.

关键词: low-glutelin rice , nitrogen , protein fractions , Glu/Pro

Abstract: To optimize both grain yield and quality of low-glutelin rice cultivars under N-fertilizer strategies, two-year field experiments involving three low-glutelin rice cultivars (W1240, W1721, W025) and an ordinary rice cultivar (H9405) with five N treatments were carried out to determine the effects of N application rate and genotype on protein fractions contents and Glutelin/Prolamin ratio (Glu/Pro). The difference of protein fraction concentrations affected by N application rate existed in genotypes. Ordinary rice cultivar had a larger increase in glutlein concentration affected by N application rate than low-glutelin rice cultivars did. Glutelin in H9405 had a increase of 30.6 and 41.0% under the N4 treatment (360 kg N ha–1) when compared with N0 treatment (no fertilizer N) in 2010 and 2011 respectively, while all the low-glutelin rice cultivars showed relatively smaller increases for two years. Variance analysis showed no significant effect of N application rate on glutelin in W1240 and W025 while the effects on albumin, globulin and prolamin were significant in low-glutelin rice. What’s more, N treatment had no significant influence on Glu/Pro ratios in low-glutelin rice cultivars while a significant increase in Glu/Pro ratio was observed in ordinary rice cultivar. So low-gultelin rice cultivars showed a different pattern from ordinary rice cultivars when influenced by N application rate.

Key words: low-glutelin rice , nitrogen , protein fractions , Glu/Pro