Chromosome pairing in F1 hybrid Arachis hypogaea L. X A. monticola Krap. et Rig.

Chromosome pairing at pachytene in the F1 hybrid Arachis hypogaea X A. monticola was studied. Pairing was remarkably regular and segment by segment except for some minor differences. Chromosomes were identified individually at pachytene. The idiograms of A. hypogaea and A. monticola were identical. Meiosis was regular and fertility was high in the hybrid indicating that the taxa concerned were very closely related.