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THE ECOTYPE CONCEPT IN RELATION TO THE REGISTRATION OF CROP PLANTS
Author(s) -
GREGOR J. W.
Publication year - 1933
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1933.tb07761.x
Subject(s) - ecotype , agriculture , biology , crop , relation (database) , unit (ring theory) , agronomy , ecology , mathematics , computer science , data mining , mathematics education
SUMMARY.1 The ecotype concept as formulated by Tuxesson (1922) postulates the existence, in the wild, of sub‐specific units–ecotypes–which result from the environmental fractionation of a larger population. Details are given of the occurrence of these units in nature. 2 While the wild ecotypes are not strictly comparable with the agricultural crop units yet the general principles underlying this concept have a definite agricultural application. Suggestions are made for a standard system of crop classification which embodies data relating to the environmental preferences of its units. Two units of agricultural significance are discussed: (1) the agrotype , or ultimate crop unit, and (2) the agro‐ecotype , or groupof agrotypes possessing similar environmental preferences. The measures necessary for the administration of the scheme are briefly outlined.