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Facultative apomixis means that apomixis does not always occur ie sexual reproduction can also happen it appears likely that all apomixis in plants is facultative in other words that obligate apomixis is an artifact of insufficient observation missing uncommon sexual reproduction apogamy and apospory in non flowering plantsin this review we focus on the initiation and progression of apomixis in plants that naturally express the trait since 1993 there has been a growing understanding of the complexity that underlies apomixis some contentious issues have been resolved and others raisedapomixis in plants presents a comprehensive review of different aspects of asexual seed formation in plants this is important in plant research since apomixis could greatly facilitate breeding in important crops it is also interesting theoretically because it carries problems related to genetic variation and evolution to its extremeapomixis is relatively common in the polyploid species of pennisetum especially those in the tertiary gene pool apomixis has been reported in polyploids triploid and higher of both the x 8 and x 9 chromosome groups only x 7 chromosome species have been reported in the primary and secondary gene pools and all are sexualapomixis derived from two greek words apo away from and mixed the act of mixing or mingling it refers to the occurrence of an asexual reproductive process in the place of normal sexual processes involving reduction division and fertilization

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