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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 |
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 |
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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.
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.
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Received: 31 March 2015
Accepted:
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Fund: Funding was provided by the Key Technologies R&D Program of China during the 12th Five-Year Plan period (2011BAD16B14, 2012BAD20B05, 2012BAD04B08). |
Corresponding Authors:
DING Yan-feng, Tel/Fax: +86-25-84396475,E-mail: dingyf@njau.edu.cn
E-mail: dingyf@njau.edu.cn
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About author: LI Gang-hua, Tel/Fax: +86-25-84396475, E-mail: lgh@njau.edu.cn; |
Cite this article:
LI Gang-hua, CHEN Yi-lu, DING Yan-feng, GENG Chun-miao, LI Quan, LIU Zheng-hui, WANG Shao-hua, TANG She.
2016.
Charactering protein fraction concentrations as influenced by nitrogen application in low-glutelin rice cultivars. Journal of Integrative Agriculture, 15(3): 537-544.
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