Population genetic variation, geographic structure, and multiple origins of autotetraploidy
in Galax urceolata.
The necessity of alfalfa cultivation could be attributed to changeable morphological and physiological features such as allogamy and autotetraploidy
which determine alfalfa high forage yield (Radovic et al.
in Fimbristylisfaleata (Vahl) Kunth (Cyperaceae).
Amphidiploid development from the interspecific hybridization of 2x Lotus species followed by colchicine-induced autotetraploidy
has been successful (Somaroo and Grant, 1971; O'Donoughue and Grant, 1988), and resulting amphidiploids have been crossed with L.
The allogamy of this species and its autotetraploidy
contribute to large within-population or within-variety genetic variation.
In cases where only quadrivalents are observed at meiosis, these are considered evidence of autotetraploidy
in Haplopappus spinulosus hybrids: evidence from natural and synthetic tetraploids.