Page:Scientific Monthly, volume 14.djvu/24

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16
THE SCIENTIFIC MONTHLY

SIZE OF PLANT IS ALSO ASSOCIATED WITH THE ADAPTIBILITY OF MAIZE TO VARIED CONDITIONS

stemmed features of one parent combined with the profuse bloom and rampant growth of the other.

Practically there are limits to what can be done by hybridization and selection although no one can say exactly what these limits are. Certain characters are antagonistic. Fruit growers dream of an apple with the productiveness and hardiness of a Ben Davis or Baldwin combined with the delicacy, sweetness and flavor of a McIntosh or Northern Spy. Yet the tough skin, thick cell walls and low sugar content of the Ben Davis are probably the very things which make it resistant to disease and able to produce abundantly under adverse climatic conditions.

The plant breeder who sets out to produce a wheat with the best milling and baking qualities together with maximum yielding capacity, resistance to disease and severe climatic conditions has a task which is extremely difficult if not impossible. Likewise the animal breeder can