【摘 要】
：
In angiosperms,double fertilization of an egg cell and a central cell with two sperm cells results in the formation of a seed containing a diploid embryo an
【机 构】
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University of Warwick,Warwick HRI,Wellesbourne U.K.
【出 处】
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2007年国际多倍体杂种优势及表观遗传学大会
论文部分内容阅读
In angiosperms,double fertilization of an egg cell and a central cell with two sperm cells results in the formation of a seed containing a diploid embryo and a triploid endosperm.The extent to which the embryo sac and/or maternally contributed post-fertilization factors control the development of the seed remains largely unknown.We have identified novel gametophytic maternal-effect maize mutants that exclusively exhibit defects during early endosperm development.In particular,the spatial expression of basal endosperm-specific transcripts (BET) in these mutants is altered during free-nuclear and cellular endosperm development.
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