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荔枝 (LitchichinensisSonn .)根尖直径 1～ 1.5mm ,长轴方向有根冠、分生区、伸长区和成熟区 4个分区 ,成熟区上有大量的根毛 ;根尖后部有许多侧根性质的细小瘤状根 ,瘤状根没有明显分化的伸长区 ,成熟区上无根毛 ,但皮层肥厚 ,维管柱相对较细 ,皮层和维管柱一道与根尖的皮层和维管柱有机相连。 30d苗龄的根尖和成年结果树根尖 2～ 3cm长根段以及瘤状根上都观察到了VA菌根的形成 ,但侵染率低 ,土壤中的AM真菌孢子密度也低。认为提高土壤中的AM真菌孢子数量和荔枝根系的VA菌根感染率 ,将是提高荔枝果实产量和质量的有效生物途径之一。
Litchi (LitchichinensisSonn.) Root tip diameter of 1 ~ 1.5mm, the long axis of the root crown, meristematic zone, elongation and mature zone 4 partition, mature area has a large number of root hair; Of the small nodular root, tumorous root no obvious differentiation of the elongation zone, no root hairs in the mature area, but the cortex hypertrophy, relatively thin column, the cortical and the vascular column with the apical cortex and the vascular column organic Connected. The formation of VA mycorrhizae was observed on root tips of adult seedlings aged from 2 days to 3 days and root segments of 2 cm to 3 cm, respectively. However, the infection rate was low and the spore density of AM fungi in soil was also low. It is considered that increasing the number of AM fungal spores in soil and the rate of VA mycorrhizal infection in litchi root will be one of the effective biological ways to improve the yield and quality of litchi fruit.