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Han Miao ,. Tian Guowei Search articles by 'Tian Guowei'. Tian Guowei ,. Shen Jiaheng Search articles by 'Shen Jiaheng'. Shen Jiaheng. Affiliations All authors 1. Department of Biology,Harbin Normal University. Harbin ,Heilongjiang;China. Share this article Share with email Share with twitter Share with linkedin Share with facebook. A micropylar haustorium is differentiate at eight-celle endosperm stage and a-chalazal haustorium at sixteen-celled endosperm stage.
A large amount of wall ingrowths interweaved network, dense cytoplasm with abundant mitochondria, ER and dictyosomes, and marked large nuclei and nucleoli are found in the haustorial cells connected endosperm cells with numerous plasmodesmata.
Two cuticular layers are observed between the integumentary typetum and embryo sac, which enclose the embryo sac from all sides but leave an apture at each pole where a edosperm haustorium is formed. The main role of endosperm haustoria is to absorb and transport nutrients to endosperm from sporophyte during its development.
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