File:Breeding crop plants (1921) (20411861325).jpg

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Title: Breeding crop plants
Identifier: breedingcroppl00haye (find matches)
Year: 1921 (1920s)
Authors: Hayes, Herbert Kendall, b. 1884; Garber, Ralph John, b. 1890
Subjects: Plant breeding
Publisher: New York (etc. ) : McGraw-Hill book company, inc.
Contributing Library: University of British Columbia Library
Digitizing Sponsor: University of British Columbia Library

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FOTATO IMPROI EMENT 231 toes has been traced to certain plant diseases (Stewart, 1916; Orton, 1914) which have been variously named as leaf roll, mosaic, and curly dwarf. Quanjer (1920) has presented evidence to show that these three diseases may be stages of the same disease, which is transmissible from plant to plant. Similar results have been obtained at University Farm.- The disease is called "mosaic dwarf" b)- Krantz and Bisby in unpublished investigations. That rejuvenation of a variety is possible through its introduction and growth under a more favorable environment is illustrated by studies which have been carried on
Text Appearing After Image:
Fig. 57.—Progenj^ of single tubers as grown at University Farm, 1918. Some tubers give vigorous progeny, others produce only small, weak, degenerate plants. (Courtesy of Krantz.) cooperatively between the Division of Hoi'ticulture of the Min- nesota Central Station and the sub-stations. Yields for Min- nesota No. 2 at University Farm for 1914, 1915 and 1916, respectively, were 196, 169 and 22 bu. This shows the rapid reduction in yield which is obtained by the continued use of tubers saved at University Farm. Tubers of Minnesota No. 2 saved from the 1916 University Farm plot gave a yield (,f 170 bu. at Duluth in 1917. Tubers from this Duluth plot yielded 300 bu. at Grand Rapids in 191S. Whether a badly diseased 1 Data on running out and on field experiments in Minnesota wore furni.shed by F. A. Kkantz of the Division of Horticulture, Minnesota Experiment Station.

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  • bookid:breedingcroppl00haye
  • bookyear:1921
  • bookdecade:1920
  • bookcentury:1900
  • bookauthor:Hayes_Herbert_Kendall_b_1884
  • bookauthor:Garber_Ralph_John_b_1890
  • booksubject:Plant_breeding
  • bookpublisher:New_York_etc_McGraw_Hill_book_company_inc_
  • bookcontributor:University_of_British_Columbia_Library
  • booksponsor:University_of_British_Columbia_Library
  • bookleafnumber:271
  • bookcollection:ubclibrary
  • bookcollection:toronto
  • BHL Collection
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9 August 2015
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