The absorption and distribution of nitrogen after floret initiation in wheat

摘要: The pattern of absorption and distribution nitrogen after floret initiation in wheat was examined with the aid labelled a view to determining importance sterile tillers as source for fertile parts plant. Tertiary were found be no direct importers from growth medium; by these almost entirely via roots main stem primary tillers. In conditions high supply tertiary continued receive tillers, but low plants starved soon senesced. When sterile, died there remobilization most their nitrogen, apparently (main stem, some secondary tillers) plant, small quantity also lost nutrient solution. It is concluded that although act temporary reservoir plant parts, they are fact little or value may well regarded useless vestige perenniality