论文部分内容阅读
为进一步探讨李生长发育规律，提高李的产量和品质，以５～６年生毛桃砧李为材料，采用石蜡切片法观察花芽分化进程，同时测定体内某些物质含量的相应变化．结果表明：李花芽分化始于６月上旬，止于１１月中旬，并可分为未分化期、生理分化期、花原基分化期、萼片分化期、花瓣分化期、雄蕊分化期和雌蕊分化期７个时期．在生理分化期，体内含水量降低，可溶性糖、全氮、游离氨基酸和内源亚精胺等代谢产物含量出现高峰，内源腐胺、精胺代谢产物含量出现低峰，一旦进入形态分化盛期，则大量消耗各类营养物质，使物质积累水平下降，而腐胺、精胺含量变幅不大
In order to further explore the law of the growth and development of jackfruit and improve the yield and quality of the jackfruit, 5 to 6 year-old peach anvil and plum were used as the materials. The flower bud differentiation process was observed by paraffin section method and the corresponding changes of some substances in the body were also determined. The results showed that flower bud differentiation began in early June and stopped in mid-November, and could be divided into undifferentiated stage, physiological differentiation stage, floral primordium differentiation stage, sepal differentiation stage, petal differentiation stage, stamen differentiation stage and pistil differentiation Period of seven periods. During physiological differentiation, the body water content decreased, the content of soluble sugar, total nitrogen, free amino acids and endogenous spermidine and other metabolites peaked, the content of endogenous putrescine and spermine metabolites showed a low peak, once entered the morphological differentiation Sheng Period, a large number of consumption of various nutrients, so that the level of material accumulation decreased, and putrescine, spermine content range is not large