According to the function, the wheat roots could be divided into 3 groups: primary root group, lower secondary root group and upper secondary root group.

依照各单位根的功能，小麦根可分为3组：初生根组、次生根下位组和次生根上位组。

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According to the function, the wheat roots could be divided into 3 groups: primary root group, lower secondary root group and upper secondary root group.

依照各单位根的功能，小麦根可分为3组：初生根组、次生根下位组和次生根上位组。

youdao