ACTA AGRICULTURAE BOREALI-SINICA ›› 2003, Vol. 18 ›› Issue (4): 16-18. doi: 10.3321/j.issn:1000-7091.2003.04.005

Special Issue: Wheat

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Changes in Activities of Key Enzymes of Starch Synthesis During Grain Filling Stage of Winter Wheat Cultivars with Different Gluten Content

GAO Song-jie, GUO Tian-cai, LUO-Yi   

  1. National Engineering Research Center for Wheat, Henan Agricultural University, Zhengzhou450002, China
  • Received:2003-04-10 Published:2003-12-28

Abstract: Changes in activities of three key enzymes AGPP,SSS and SBE associated with starch synthesis were studied during grain filling of three winter wheat cultivars with strong,middle and weak gluten force on the condition of pond culture.The results indicated that AGPP and SBE activities of three cultivars and SSS activity of strong gluten cultivars had a single-peak curve in loam soil,their peak appeared in 20 d after anthesis,but SSS activity of middle and weak gluten cultivars came to be a double-peak curve,the peaks appeared in 10 d and 20 d after anthesis,respectively,and the second peak was much higher than that of the first.It showed that the substrate content of starch synthesis enzymes of strong gluten cultivars in kernel was higher and starch synthesis could be more active than that of middle and weak gluten cultivars,but amylopection synthesis of middle and weak gluten cultivars in kernel could be more active than that of strong gluten cultivars.

Key words: Winter wheat, Gluten, Starch, Synthesis enzyme

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Cite this article

GAO Song-jie, GUO Tian-cai, LUO-Yi. Changes in Activities of Key Enzymes of Starch Synthesis During Grain Filling Stage of Winter Wheat Cultivars with Different Gluten Content[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(4): 16-18. doi: 10.3321/j.issn:1000-7091.2003.04.005.

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