Because the mature tissue of velvetleaf contains lots of secondary metabolites such as alkaloid and phenolic, it is difficult to obtain high purity DNA from mature tissue of velvetleaf.
熟组织中酚类、黄酮类等次生代谢物较多，从中提取出高纯度的DNA比较困难。
Because the mature tissue of velvetleaf contains lots of secondary metabolites such as alkaloid and phenolic, it is difficult to obtain high purity DNA from mature tissue of velvetleaf.
熟组织中酚类、黄酮类等次生代谢物较多，从中提取出高纯度的DNA比较困难。
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