【摘要】 通过对一年生野生大豆、半野生大豆,栽培大豆的形态解剖学研究,结果发现髓的发育是从无到有的过程,它的发育是符合Zimmer mann的向基移位理论.更多还原

【Abstract】 Throngh the studies on form anatomy of annual natural, seminaturaland cultivated soybean, the authors find that the pith grows out of nothing and itsdevelopment accords with Zimmer mann’s basipetal shift theory.更多还原