Cytological and genetical studies of the interspecific cross of the cultivated foxtail millet, Setaria italica (L.) beauv., and the green foxtail millet, S. viridis L
1945
Li, H.W. | Li, C.H. | Pao, W.K.
A cross was made between S. italica, the cultivated millet, and S. viridis, the wild foxtail, both of which have nine pairs of chromosomes. The pairing of the chromosomes in the F1 hybrid seemed to be normal. The hybrid, however, had about 70% pollen sterility. Eight qualitative characters were studied in this cross. The F1 hybrid resembled the viridis parent for all characters studied except pericarp color. Altogether 15 gene differences with three linkage groups were revealed in the F2 generation and these were confirmed in the F3 generation. The three linkage groups are mapped as follows: In--O, Pr1--9.11, Pr2--30.04, X--O, P--19.37, Pr3--46.46, Ga--O, W--36.80, br--49.12, X may be B, Vi, or R. Other genes studied seem to be inherited independently of these three groups and of one another. S. viridis is concluded to be the probable mediate progenitor of the cultivated millet. S. italica.
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