不同品种甘薯地上部生长特性及干物质积累分配特性研究

摘要

Explored the relationship between aboveground growth characteristics and the accumulation and distribution of dry matter of the different sweet potato. The results showed that, the number of branches in the high-yielding varieties was high-er than the low-yielding varieties at the early growth period. The stem diameter and the average stem length of sweep potato had no relevance with the yield of sweet potato. High-yield varieties of T/R value was significantly less than the low yielding varieties. Low yield of varieties of aboveground thrive,causing the photosynthetic product shipped to the root of the less,was one of the reasons for the low root yield.%探究不同产量潜力甘薯品种的地上部生长特性与干物质积累分配的关系，结果表明，在甘薯生长前期，高产品种的分枝数高于低产品种；在甘薯生长的整个生育期，甘薯的基部茎粗与平均茎长与产量的高低并无直接相关性。高产品种的T/R值要明显小于低产品种。低产品种的地上部生长旺盛，导致光合产物运向块根的较少，是块根产量较低的原因之一。