1. After the early uninucleate stage, nearly all of Peiai 64S microspores possessed malfunctional exine that was deviod of electron transparent region between sexine and nexine, and no intine was established.
早期小孢子形成之后，几乎所有小孢子外壁均发育异常，表层与里层之间界限不清，缺少中间透明带，同时内壁没有形成。
nexine是什么意思
2. The microspore with very thick nexine;
小孢子具很厚的外壁内层；