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GrainGenes Reference Report: SAS-37-1076

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Reference	SAS-37-1076
Title	Effects of different types of nitrogen fertilizer on leaf N metabolism and grain protein of wheat cultivars with specialized end-uses
Journal	Scientia Agricultura Sinica
Year	2004
Volume	37
Pages	1076-1080
Author	Ma X Wang Z Wang X Li L
Abstract	The effects of NO3--N, NH4+-N and urea (NH2-N) on leaf N metabolism and protein content of wheat cultivars Yumai34 (strong gluten), Yumai49 (medium gluten) and Yumai50 (weak gluten) were studied in a pot experiment. The application of urea to Yumai34 increased NR (nitrate reductase) activity in leaves at the flowering stage, N content, glutenin/gliadin ratio, processing quality and nutritive value, and resulted in the highest grain protein and albumin contents in this cultivar. The grain protein content, albumin content and glutenin/gliadin ratio of Yumai49 were highest with NH4+; this treatment also enhanced the processing quality and nutritive value of this cultivar. Yumai50 recorded the lowest grain protein content, albumin content and glutenin/gliadin ratio, but showed good processing quality when treated with NH4+. Grain protein content was closely related to the N content of leaves at the flowering stage but not to NR activity
Keyword	[ Hide all but 1 of 27 ] albumin ammonium nitrogen cereal grains chemical composition cropgrowth stage cultivar enzyme enzyme activity flowering gliadin glutenin metabolism nitrate nitrate nitrogen nitrate reductase nitrogen nitrogen content nitrogen fertilizer nitrogen metabolism nutritive value plant composition processing processing quality protein content quality urea varietal reactions

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