有研究表明,紫花苜蓿根中淀粉和糖的积累与多年生牧草的抗寒性有关[1-2]。加拿大的研究学者指出,抗寒性越强的苜蓿品种在秋季积累的糖水平越高。在低温冷胁迫条件下,光合作用不足以维持根中的糖水平;因此,抗性强的品种分解根中淀粉用以维持高糖浓度水平。可见,主根内非结构性碳水化合物 Studies have shown that alfalfa root starch and sugar accumulation and perennial grass cold resistance [1-2]. Canadian researchers point out that the harder cold-resistant alfalfa varieties accumulate higher levels of sugar in the fall. Under low temperature cold stress, photosynthesis is not sufficient to maintain sugar levels in roots; therefore, resistant varieties break down starch in the roots to maintain high sugar levels. Can be seen, the main root of non-structural carbohydrates