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在研究梅花花芽分化过程以及花原基形成前后体内细胞分裂素和赤霉素变化的基础上,作者又进一步研究了花芽分化临界期木质部液、成花短枝及其叶片内氨基酸含量的变化。结果表明:进入花芽分化临界期后,木质部液中氨基酸含量出现高峰;而后,成花短枝及其叶片中的氨基酸含量也依次出现高峰,木质部液中单个氨基酸含量的变化相差较大。短枝及其叶片中单个氨基酸的变化动态大多数基本相似,仅短枝中天门冬氨酸、精氨酸,叶片中天门冬氨酸、赖氨酸、半胱氨酸和蛋氨酸的变化较特殊。我们认为成花短枝及其叶片中这几种氨基酸和木质部液中氨基酸含量的变化与梅花花芽生理分化的关系值得进一步探讨。此外,本文对通过施氮肥促梅花开花的可能性进行了讨论。
On the basis of studying the flower bud differentiation process and the changes of cytokinin and gibberellin before and after the formation of flower primordium, the author further studied the changes of amino acid content in the flower buds, the flower spurs and their leaves in the critical stage of floral bud differentiation. The results showed that the content of amino acids in the xylem fluid peaked after entering the critical stage of flower bud differentiation, and the amino acid content of the short shoots and their leaves also appeared the peak in turn, while the content of single amino acids in the xylem fluid varied greatly. Most of the changes of single amino acids in spur and its leaves were mostly similar, only the changes of aspartate, arginine and aspartate, lysine, cysteine and methionine in the short branches were special . In our opinion, the relationship between the changes of amino acids in these amino acids and xylem liquor and the physiological differentiation of plum flower buds may be worth further study. In addition, the paper discussed the possibility of promoting flowering of plum blossom by applying nitrogen fertilizer.