ACTA AGRICULTURAE BOREALI-SINICA ›› 1996, Vol. 11 ›› Issue (3): 57-62. doi: 10.3321/j.issn:1000-7091.1996.03.011

Special Issue: Wheat

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Accumulation and Distribution of Carbohydrate and Nitrogen and Their Relationships to Grain Protein Content in Wheat

Zhang Qingjiang1, Zhang Liyan2, Bi Huanwu2   

  1. 1. Cereal and Oil Crops Institute, Hebei Academy of Agricultural and Forestry Sciences, Shijiazhuang 050031;
    2. Department of Agronomy, Hebei Agricultural University, Baoding
  • Received:1994-12-16 Published:1996-09-28

Abstract: A field trial was conducted to study the relationship between protein content and accumulation and distribution of carbohydrate(C)and nitrogen(N)by using “high”and “low”protein wheat varieties with N fertilizer application.The results indicated that N was mainly accumulated in leaves before anthesis,and after that in grains.Grain N for the low protein variety “Jing Hua 1”was mainly redistributed from N that accumulated in vegetative parts in earlier stage,for the high protein varieties“Jing 771”and “Jimai 23”,however,not only the former,but also continuous absorption and assimilation of N after anthesis.Concentration of N in grain as a percentage of dry matter was high initially,then declined,and again showed a rise until maturity,but the change of concentration of C in grain was just opposite.“S”curve of grain N accumulation was observed.Changes of accumulation of C and N in the grain of “high”protein varieties were relatively parallel,but for “low”protein varieties were not.Both grain yield and protein content were affected by N fertilizer.They were enhanced simultaneously at appropriate N fertilizer application.

Key words: Wheat, Accumulation and distribution of N and C, Protein content

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Cite this article

Zhang Qingjiang, Zhang Liyan, Bi Huanwu. Accumulation and Distribution of Carbohydrate and Nitrogen and Their Relationships to Grain Protein Content in Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1996, 11(3): 57-62. doi: 10.3321/j.issn:1000-7091.1996.03.011.

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