水竹和慈竹开花代谢关键因子主成分分析

开花是植物从营养生长向生殖生长的转换,是植物生存、繁衍和进化的途径.大多数植物开花需要经过某些特定条件的诱导,比如低温春化和光周期诱导(张云等,2003).竹类植物是典型的多年生一次开花植物,目前还没有迹象表明竹子的开花与日照长度和低温诱导有关.

Principal Component Analysis on the Key Metabolism Factors for Bloom of Phyllostachys heteroclada and Neosinocalamus affinis

The key metabolism factors for bloom of Phyllostachys heteroclada olive and Neosinocalamus affirm Keng were analyzed by using the principal component analysis method. The results showed that GA3, GA3 /ABA and starch were the most important factors related to bloom of the two bamboo species, followed by soluble sugar, activities of starch enzyme and glutaminase. GA3, starch and soluble sugar with a certain content, and GA/ABA were positively correlated to the bamboo blossom. However, ZT, ZT/ABA and starch enzyme activity had a clear link to bamboo flowering reversion of Phyllostachys heteroclada. In order to know bamboo flowering more clearly, a preliminary simulating model of bamboo flowering was constructed. The model shows that the bamboo flowering procedure is lengthy and complicated. Any influence and break in the procedure would probably accelerate or terminate growth and florescence course, which could be the reason why bamboo florescence is so variable.