单子叶植物的主根出生后不久就停止生长或死亡，在胚轴和茎基部的节上生出许多粗细相等的不定根，再由不定根上生成侧根，整个根系外形呈絮状，所以把它称做须根系。
不定根组成了禾本类作物的须根系，对水分和养分的吸收起着关键的作用。
Adventitious roots are vital for water and nutrient assimilation by cereal crops because they comprise the bulk of the fibrous root system.
冠状根是须根系的主要组成，对作物的固着和养分、水分吸收有着重要意义。
Crown roots are main components of the fibrous root system and important for crops to anchor and absorb water and nutrition.
谷类作物的须根系主要由不定根组成，在营养物质和水分吸收中发挥重要作用。
The fibrous root system in cereals comprises primarily adventitious roots (ARs), which play important roles in nutrient and water uptake.
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