The results showed that microspore development of medicago truncatula could be divided into three periods : early-or mid uninucleate , late-uninucleate and binucleate . A significant correlation could be found between development stages of microspore and buds morphology .

结果表明：蒺藜苜蓿小孢子发育可分为单核早中期、单核靠边期和双核期,不同时期的小孢子与花蕾外部形态具有明显相关性。