A Y-linked Inheritance of Asynapsis in Rumex Acetosa

Abstract

GENICALLY inherited a synapsis is sometimes met with in a number of plant species, according to observations made by various workers during the last ten years. The most remarkable cases were recently reviewed by Prakken¹. In a number of the oases observed it was, however, not possible to say with any certainty if the lack of chiasmata at meiosis really was genically determined or not. One of these uncertain cases was observed by Yamamoto² in a Japanese male plant of Rumex Acetosa, but in Rumex angiocarpus I observed³ asynapsis, which most possibly is of the modificatory type.