[Bouquet arrest and its consequences for asynaptic meiosis in cereals--haploids and wide hybrids F1].

: Arrest of chromosomes at bouquet configuration at zygothene leads to meiotic restitution in some haploids and allohaploids in cereals: univalents are transported preferentially to one spindle pole in bipolar spindle because of their oriented position in the beginning of prometaphase.