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Spread of an Undesirable Gene in Populations of Phaseolus lunatus L. 1
Author(s) -
Tucker C. L.,
Prout Timothy,
Harding James
Publication year - 1967
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1967.0011183x000700060019x
Subject(s) - phaseolus , biology , allele , genetics , mutation , genotype , allele frequency , mutation rate , population , gene , botany , demography , sociology
An experimentally purified population of Phaseolus lunatus L. ‘Concentrated Fordhook’ was used to estimate the recurrent mutation rate of the recessive allele w to the dominant allele W . No mutations were found in the sample of 387,684 gametes tested and the maximum possible mutation rate was estimated to be 1.5 × 10 −5 . The frequency of the dominant allele was estimated in a commercial (unpurified) population and found to be 3.1 × 10 −3 . A mathematical analysis indicated that this maximum recurrent mutation rate could not account for the spread of the undesirable W allele in commercial populations of Concentrated Fordhook. A minimum selective advantage of 11% for the WW genotype was proposed and the disparity between this estimate and the previously reported estimate of a 40 per cent disadvantage was discussed.