Protein content of grains on tillers at each nodal position in wheat [Triticum aestivum] plants
2002
Sato, H. (Fukuoka-ken. Agricultural Research Center, Chikushino (Japan)) | Uchimura, Y. | Matsue, Y.
The protein content of wheat grains on the productive tillers at each nodal position and order were investigated to establish the cultivation technique for improvement of the crude protein content of wheat grains. Protein content of the grains widely varied with the position of tillers in the plant. The protein content of the grains on the secondary productive tillers was higher than that on the primary productive tillers. Grains on higher nodal tillers generally contained a larger amount of protein. In ""Norin 61"",""Chikugoizumi"" and ""Iwainodaichi"", the content of crude protein positively correlated with heading date and negatively correlated with the weight of head. The weight of head negatively correlated with heading date. Therefore, it is concluded that the protein content of the grains varies with the nodal position the tiller due to difference in the degree of grain filling, which is closely related with the heading date and the order of tillers. The protein content of the grains produced on the plants by early sowing was lower than that by standard sowing and the difference in the protein content between standard and late sowing was not significant. The degree of increase in protein content caused by top dressing of nitrogen was greater in the grains on the secondary productive tillers and on higher nodal position.
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