The translocation of C¹⁴‐assimilates in Eragrostis curvula : An autoradiographic survey

Abstract

In intact plants C¹⁴‐assimilates were translocated from the treated leaf on the primary tiller to young leaves on that tiller, to secondary tillers, and also to the roots. Plants defoliated after labelling revealed movement of materials from the storage organs to all the new leaves. Here these materials were used as a respiratory substrate and for the production of structural materials. Although initially after defoliation new leaves retained all their assimilates, presumably for their own growth, assimilates were soon translocated from these leaves to the roots.

UITTREKSEL

In ongesnyde plante is die C¹⁴‐assimilante verplaas vanaf die gemerkte blaar op die primere loot na die jong blare van daardie loot, na die sekondere lote, en ook na die wortels. Plante wat ontblaar is na merking het beweging van stowwe vanafdie bergingsorgane na al die nuwe blare getoon. In hierdie blare het die stow we gedien as respiratoriese substraat asook vir die daarstelling van boustowwe. Na ontblaring het die nuwe blare aanvanklik al hul assimilante behou, waarskynlik vir hul eie groeiprosesse, maar spoedig is hierdie stowwe verplaas na die wortels.