茭白膨大前后源库关系的研究

CHANGE OF THE DRY WEIGHT, FRESH WEIGHT AND STARCH CONTENT IN THE UP-GROUND PARTS OF ZIZANIA LATIFOLIA

植株的干重经历了上升—迅速上升—下降的过程 ,鲜重则持续上升 ,淀粉含量在孕茭期达最大值 ,以后快速下降 ;孕茭膨大后 ,短缩茎的干、鲜重显著下降 ,淀粉含量大幅下降 ;而肉质茎干、鲜重迅速增加 ,淀粉含量在刚膨大时最高 ,短缩茎与肉质茎之间存在着明显的养分转运关系 .

The dry weight of the plant went through a course of ascending-ascending rapidly-descending slightly. The fresh weight kept on ascending. The starch content peaked in the pregnant period, and then it descended rapidly. After pregnant period, the dry weight, fresh weight and starch content of the culm reduced massively while the dry weight, fresh weight and starch content of Zizania gall kept on increasing, and the starch content peaked when Zizania gall began expanding. This indicated that there existed source\|transport relationship between Zizania gall and culm.