File:The basis for the improvement of American wheats (1900) (14781771592).jpg

Identifier: basisforimprovem24carl (find matches)
Title: The basis for the improvement of American wheats
Year: 1900 (1900s)
Authors: Carleton, Mark Alfred, 1866-1925
Subjects: Wheat Varieties United States
Publisher: Washington : G.P.O.
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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crossing with the durums. Besides the direct advantagesof increased and multiplied variations induced through selection ofparents from different groups for any particular district one is therebyable also to produte sorts adapted for other very different districts,thus allowing his work to be of much wider usefulness. Thus afterthe production of Joness Winter Fife, which has been so popular inthe Eastern and North Central States, the introduction of the spelt ele-ment, without loss of other qualities, might have made it of even greatervalue for the Palouse country, where it is very much desired, but cannot be used because of its shattering. The wheat plant being so closely self-fertile, there is within it, lyingdormant, a wonderful power to vary (a power far greater than in plantscross-fertilized in nature), which is thrown into action when different BUL. 24, DIV. VEG. PHYS. & PATH., U. S. DEPT. OF AGR. PLATE IX.
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D. G. PASSMORE. AHo^n X Cu. Lith. B.-Utimor.-. HYBRID WHEATS, EARLY ARCADIAN AND DIAMOND GRIT, BY SIDE OF PARENT VARIETIES. 1, Early Red Clawson (la, grains); 2, Early Arcadian (2a, grains); 3, Early Genesee Giant i3a, grains); 4, JONESS Winter Fife (4a, grains); 5, Diamond Grit (5a, grains.) 73 varieties are artifically crossed. But tlie enormous amount of varia-tion induced by composite crossing between dillerent wiieat groups,though it must be apparent to anyone, can only V)e appreciated byseeing the results in the tield. The writer had the opportunity ofobserving such results in the experimental plats of the (iarton Broth-ers, in Lincolnshire. England. Their experiments in this line are b)^far the best illustration of this kind of work in the world. In certainplats were shown the olispring of the second generation from the lastcross in cases of series of crosses in which parents were taken fromfour or even live different wheat groups. In these plats of the secondyear the progeny h

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