The variance of the X2 mutant frequency estimate in barley
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The variance of the X2 mutant frequency estimate in barley. / Keiding, Niels.
In: Hereditas, Vol. 66, No. 2, 12.1970, p. 263-267.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The variance of the X2 mutant frequency estimate in barley
AU - Keiding, Niels
PY - 1970/12
Y1 - 1970/12
N2 - For the estimation of the mutation frequency, m, of induced mutations in barley, the X2 mutant frequency has been proposed as an estimator of m E(F), where E(F) is the mean segregation frequency of a homozygous mutant from a heterozygous self‐fertilized flower. Frydenberg (1963) has derived an approximation of the variance of this estimator. In the present paper a more precise estimator is given. It is demonstrated that Frydenberg's approximation overestimates the variance, and though the difference is negligible for small values of m, the use of the more precise estimator is recommended.
AB - For the estimation of the mutation frequency, m, of induced mutations in barley, the X2 mutant frequency has been proposed as an estimator of m E(F), where E(F) is the mean segregation frequency of a homozygous mutant from a heterozygous self‐fertilized flower. Frydenberg (1963) has derived an approximation of the variance of this estimator. In the present paper a more precise estimator is given. It is demonstrated that Frydenberg's approximation overestimates the variance, and though the difference is negligible for small values of m, the use of the more precise estimator is recommended.
U2 - 10.1111/j.1601-5223.1970.tb02349.x
DO - 10.1111/j.1601-5223.1970.tb02349.x
M3 - Journal article
VL - 66
SP - 263
EP - 267
JO - Hereditas
JF - Hereditas
SN - 0018-0661
IS - 2
ER -
ID: 202486952