盐胁迫下油菜素内酯对番茄产量和品质的影响

Effect of Brassinolide on Yield and Quality of Tomato Under Salt Stress

以番茄"齐达利"为试材,对生殖期盐胁迫下植株用不同浓度油菜素内酯(0、0.05、0.1、0.2、0.4、0.8mg/L)诱导处理,研究油菜素内酯对盐胁迫下番茄产量和品质的影响。结果表明:油菜素内酯的最佳处理浓度为0.2mg/L;番茄的单果重以及单株产量都是随着处理浓度的增大而呈现出先递增后递减趋势;果形指数总体上随处理浓度增大而呈现递增趋势;番茄果实硬度、可溶性固形物含量、可溶性糖含量以及维生素C含量都随着处理浓度的增大而呈现出单峰曲线变化趋势,在0.2mg/L油菜素内酯处理达到最大值;番茄果实有机酸的含量随着处理浓度的增大呈现出不同的变化趋势。番茄红素在0.4mg/L油菜素内酯处理达到最大值;抗逆诱导物质提高了番茄果实的产量,改变了果实的硬度、可溶性固形物、有机酸的含量和糖酸比,影响了维生素C、番茄红素和果形指数的变化,从而引起番茄果实品质的变化。

＇Qidali＇ tomatoes were chosen as the test material,the effect of BR on the quality and yield of tomatoes under salt stress with different concentrations of BR（0,0.05,0.1,0.2,0.4,0.8 mg/L）were studied.The results showed that the effect under the 0.2 mg/L BR concentration treatment was the better.With the concentration increased,fruit weight and yield showed a decreasing trend after the first increment;fruit shape index showed a ascend trend;the firmness of fruit,the content of total soluble matter,fruit soluble sugar and vitamin C changed with a single apex curve with the concentration increased,all were up to the max in 0.2 mg/L BR concentration;organic acid content showed different trends when the BR concentration increasing;the content of lycopene was up to the max in 0.4 mg/L BR concentration;the yield of tomato fruit increased under resilience inducing substance;the firmness,the content of total soluble matter and organic acid in tomato fruit changed with the treatments,affected the change of vitamin C,lycopene and shape index which lead to changes of quality of tomato fruit.