. Contributions from the Laboratory of Plant Genetics. Fig. 1. Castration of Buds of Xicotiana tabacum before Crossing, a, correct stage for castration ; b, method of slitting the corolla ; c, castrated bud. The theory supposes that when a dominant and a recessive char- acter meet in a cross, the germ cells which are produced in the hybrid do not blend these characters, but possess either the one or the other; and as the possession of either character is a matter of chance, on the average 50 per cent, will bear the dominant and 50 per cent, will bear the recessive character. In a plant, for ex
. Contributions from the Laboratory of Plant Genetics. Fig. 1. Castration of Buds of Xicotiana tabacum before Crossing, a, correct stage for castration ; b, method of slitting the corolla ; c, castrated bud. The theory supposes that when a dominant and a recessive char- acter meet in a cross, the germ cells which are produced in the hybrid do not blend these characters, but possess either the one or the other; and as the possession of either character is a matter of chance, on the average 50 per cent, will bear the dominant and 50 per cent, will bear the recessive character. In a plant, for example, 50 per cent, of the pollen cells would bear the dominant and the other 50 per cent, would. Fig. 2. Castrated Bud of Impaticns sultani showing Method of Protection in Greenhouse Work. VOL. LXXVil — Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bussey Institution. Boston : [s. n. ]
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