变态茎

茭白变态茎膨大的早期阶段主要表现为茭白重量的快速增加，但体积增加相对较小；

The results are as follows : The stem weight increased sharply with a slow rise in volume at early swelling phase ;

在变态茎膨大的早期阶段，可溶性蛋白质和不溶性蛋白质的含量呈上升态势，在膨大的第6天含量最高，然后又开始下降。

An increase in the contents of soluble protein and insoluble protein was observed with the stem swelling , which attained their peak values at day 6 of swelling , then decreased .

木质素和纤维素在变态茎膨大的早期含量较高，随着茎的膨大，其含量持续下降，至膨大的第8天其含量最低，然后，二者的含量又明显上升。

The contents of lignin and cellulose exhibited the following trend : both of them declined with stem swelling , reached a lowest levels at day 8 of swelling , then they start to rise .

而淀粉的含量变化与蛋白质不同，其含量在变态茎膨大过程中一直上升，当蛋白质含量下降时，其含量大幅上升。这个结果说明蛋白质和淀粉的合成之间可能存在竞争关系。

While the change in starch level showed a contrast trend compared to protein , it rose with the swelling of stem , and a sharp rise was recorded when the protein started to decline , suggesting that a possible competition in synthesis substrate between the protein and starch existed .