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首页> 外文期刊>农业科学学报（英文版） >Photosynthesis, Carbohydrate Storage and Remobilization During Grain Filling as Affected by Sulphur Application in Winter Wheat
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Photosynthesis, Carbohydrate Storage and Remobilization During Grain Filling as Affected by Sulphur Application in Winter Wheat

机译：硫在冬小麦灌浆过程中的光合作用，碳水化合物的储存和转运

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摘要

Photosynthesis and carbohydrate storage and remobilization was investigated during grain filling of winter wheat (Triticum aestivum L., cv. Lumai 22) in sulphur application experiments where the available sulphur (S) content in the soil of 0-20 cm soil layer was 5.84 mg kg-1. Two levels of S were applied as S0 (0 kg S ha-1) and S1 (67.5 kg S ha-1). The results showed that net photosynthetic rate of flag leaf of S1 treatment was significantly higher than S0 treatment, and it increased gradually from anthesis to 35 DAA. Sucrose-phosphate synthase (SPS) activity and sucrose content of S1 treatment were significantly higher than those of S0 treatment. The contents of total soluble sugar, sucrose, fructose, glucose, DP3 and DP ≥ 4fructan in stem and sheath of S1 treatment were significantly higher than those of S0 treatment also. The amount of total soluble sugar and fructans remobilization from stem and sheath and the starch accumulating rate in grain of S1 treatment was significantly higher than those of S0 treatment. It is suggested that sulphur application increase photosynthate remobilization from stem and sheath to grain at later filling stage.
机译：在硫肥施用实验中，调查了冬小麦（Triticum aestivum L.，cv。Lumai 22）的籽粒灌浆过程中的光合作用和碳水化合物的储存和迁移，其中0-20厘米土壤层的土壤中有效硫（S）含量为5.84 mg公斤-1。施用了两个水平的S，分别为S0（0 kg S ha-1）和S1（67.5 kg S ha-1）。结果表明，S1处理的旗叶净光合速率明显高于S0处理，并且从花期到35DAA逐渐增加。 S1处理的蔗糖-磷酸合酶（SPS）活性和蔗糖含量显着高于S0处理。 S1处理的茎和鞘中总可溶性糖，蔗糖，果糖，葡萄糖，DP3和DP≥4果糖的含量也显着高于S0处理。 S1处理后谷粒中茎和鞘中总可溶性糖和果聚糖的迁移量和淀粉积累速率显着高于S0处理。建议在后期灌装阶段，硫的施用增加了光合产物从茎，鞘到谷物的转运。

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