INHERITANCE OF ACIDITY IN TOMATOES

Abstract
High acidity was highly heritable and dominant in segregating generations of the tomato cross, Morden WO24MD × Early Lethbridge. Plants with highly acid fruits and those with fruits low in acid occurred in approximately 3:1 and 1:1 proportions in the F2 and backcross generations, indicating monofactorial control. A one-factor, inheritance hypothesis was supported also by quantitative analyses. Tomatoes normally high in acid at Morden, Manitoba, had a lower acidity during the cool and moist weather of 1962 than those grown in the warm and dry season of 1961. This did not seriously impede, in 1962, the selection of plants with high-acid fruits.

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