The pattern of the secondary growth of the soybean root is similar to that of most dicots . 大豆根次生生长的类型和多数双子叶植物相似。
2.
Moreover the pf40 gene was ubiquity distributed in cereal crop genome . dicots such as tobacco and tomato do not have the pf40 homolog gene , but we found its homolog gene maybe present in arabidopsis genome 用该基因与玉米、小麦、水稻主要禾本科作物的基因组dna杂交，结果表明pf40基因及其同源基因普遍存在于禾谷类植物中，同时在拟南芥基因组中也有pf40基因的同源序列。
