genética de coffea: xiii - hereditariedade do caraterístico erecta em coffea arabica l.

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ID: 187343
1950
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Abstract
In the present paper the authors present the results of a genetic study concerning the erecta type of growth of the lateral branches of Coffea arabica L. The erecta mutant, which probably originated in Java, differs from normal coffee plants by having upright growing lateral branches instead of plagiotropic ones. However, in spite of the fact that both, the main shoot and the lateral branches grow in the same direction, the dimorphic nature of the branches still persists. The genetic studies carried out since 1933, which included the study of progenies of F1, F2 generations and backcrosses, have revealed that the erecta character is conditioned by one pair of dominant genes Er Er. It is not yet known whether all erecta plants, of different origins, have the same dominant gene, but investigations already in progress are expected to yield information on this matter. Of all genes so far studied in C. arabica, Er is the most completely dominant, the heterozygote being indistinguishable from the homozygote. The erecta gene has been found to show complete penetrance and a constant expressivity.
Reference Key
carvalho1950bragantiagentica Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;A. Carvalho;C. A. Krug
Journal revista espanola de salud publica
Year 1950
DOI
10.1590/S0006-87051950001100001
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051950001100001
Keywords
Agriculture (General)

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