Calycanthus chinensis is a critically endangered species.There exist only two natural populations in eastern China.The p......

夏蜡梅传粉后，花粉管８ｄ到达胚囊，１０－１３ｄ实现双受精，为珠孔受精。胚乳为核型胚乳。初生胚乳核经短暂休眠进行分裂，１８ｄ胚完全细胞化，呈单鲁细胞，随后细......