Embryo sac development in some representatives of the tribe Cynodonteae (Poaceae)

Abstract

Chloris virgata Sw., Cynodon dactylon (L.) Pers., Harpochloa falx (L. f.) Kuntze, and Tragus berteronianus Schult. have a Polygonum type of embryo sac development. Unreduced embryo sacs were found in Eustachys paspaloides (Vahl) Lanza & Mattei, Harpochloa falx, and Rendlia altera (Rendle) Chiov. Both facultative and obligate apomixis were observed. The Hieracium type of embryo sac development was observed in the aposporic specimens.

Keywords

• apomixis
• apospory
• Chloridoideae
• Cynodonteae
• embryo sac development
• Poaceae