. Botany, with agricultural applications. Botany. 522 VARIATIONS Also a number of our choice varieties of Wheat started from one or a few plants which suddenly appeared differing in characters from the other plants in the field. Although mutations are commonly described as wide depar- tures in characters that appear suddenly and breed true there- after, there are some exceptions. Sometimes mutations are only small deviations from the normal type, and there are some mutations that do not breed true but breed much like hybrids, thus giving rise to oiTspring various in type. Professor Babcock of
. Botany, with agricultural applications. Botany. 522 VARIATIONS Also a number of our choice varieties of Wheat started from one or a few plants which suddenly appeared differing in characters from the other plants in the field. Although mutations are commonly described as wide depar- tures in characters that appear suddenly and breed true there- after, there are some exceptions. Sometimes mutations are only small deviations from the normal type, and there are some mutations that do not breed true but breed much like hybrids, thus giving rise to oiTspring various in type. Professor Babcock of the University of California gives an account of a new form of Walnut differing in character of leaves, fruit, and in other ways from the California Black Walnut from which this new form apparently arose through a mutation. Some of the offspring of this new form are true to the new type while others are like the California Black Walnut. Other instances of mutations that do not breed true have been Fig. 470. — The Wild Cabbage and some of the forms that are supposed to be mutants of the Wild Cabbage. A, Wild Cabbage; B, Komrabi; C, Cauli- flower; D, Cabbage; E, Welsh or Savoy Cabbage; F, Brussels Sprouts. After 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 Martin, John N. (John Nathan), b. 1875. New York, John Wiley & sons, inc. ; [etc. ,etc. ]
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbotany, bookyear1920
