Correlation and the Structure of Introgressive Populations

The Identification of Hybrid Plants in Segregating Populations

“…EXPERIMENTAL MATERZAL AND PROCEDURES The experimental material and procedures have been described in detail in an earlier paper (Goodman, 1966), and will only be considered briefly here. The first of these should theoretically be the exact intermediate between one parental species and its backcross, the second should be the exact intermediate between that backcross and the pooled F1 and F2 generations, the third should be the exact intermediate between the pooled F1 and Fz generations and the other backcross, while the fourth should be the exact intermediate between that backcross and the second parental species.…”

“…( 2 ) and (3) the methods used in measuring the above characters have been described earlier (Goodman, 1966). ( 2 ) and (3) the methods used in measuring the above characters have been described earlier (Goodman, 1966).…”

“…All of these characters, except floral index, have Goodman, 1966) and found to be useful for discrimination between the parental species. All of these characters, except floral index, have Goodman, 1966) and found to be useful for discrimination between the parental species.…”

The Quantification of Some Plant-Taxa Circumscriptions

“…2Present address: 401 San Bernabe Drive, Monterey, California 93940. about two dozen characters. Goodman (1966Goodman ( , 1968, for example, sampled the variation of 8 and 16 characters in cotton and maize, respectively, using Sokal's (1965) generalized variance estimate. Hatcher (1967) statistically sampled the variation of each of 13 characters in a series of cultures of five different clones of a single hepatic species.…”

“…Goodman (1966) and Hatcher (1967), for example, sampled variability in this way. An alpha taxonomist, on the other hand, usually must sample the variability of a taxon by intensive studies on a small number of OTUs (a sample of OTUs which may or may not be random, usuallv not) and intuitively establish limits to taxonomic circumscriptions during the course of preparing diagnoses.…”