芒果花芽调控期不同部位淀粉含量变化初探

Study on the change of starch content in different parts of mango flower bud regulation period

以元江云龙新村的贵妃芒果(Mangifera indica L.)为试材,短截初花期结果枝后树冠喷施尿素、磷酸二氢钾、多元微肥,研究花芽分化过程中剪口芽、韧皮部和叶片内淀粉含量的变化。结果表明,芽内淀粉含量喷施磷酸二氢钾后最高,于3月7日达到最大值(15.47 mg/g),比喷施尿素、多元微肥和对照的最大值分别高1.94、1.60、1.00 mg/g;韧皮部淀粉含量喷施尿素后最高,于3月7日达到最大值(15.65 mg/g),比喷施尿素、多元微肥和对照的最大值分别高0.68、2.83、5.96 mg/g。叶内淀粉含量对照最高,于3月7日达到最大值(14.47 mg/g),比喷施磷酸二氢钾、尿素和多元微肥的最大值分别高2.18、2.93、1.73 mg/g。

Mangifera indica L.from Yunlong village,Yuanjiang was used to study the changes of starch content in buds,phloem and leaves during flower bud differentiation by spraying urea,potassium dihydrogen phosphate and multiple microfertilizer on the crown af⁃ter fruit bearing branches at short flowering stage.The results showed that the starch content in buds was the highest after the applica⁃tion of potassium dihydrogen phosphate,and reached the maximum value(15.47 mg/g)on March 7,which was 1.94,1.60 and 1.00 mg/g higher than that of urea,multi-microfertilizer and control,respectively.The content of starch in phloem was the highest after the application of urea,and reached the maximum value(15.65 mg/g)on March 7,which was 0.68,2.83 and 5.96 mg/g higher than that of urea,multivariate microfertilizer and the control,respectively.The content of starch in leaves was the highest in the control group and reached the maximum value(14.47 mg/g)on March 7,which was 2.18,2.93 and 1.73 mg/g higher than that of potassium dihydrogen phosphate,urea and multi-microfertilizer,respectively.