TATISTICAL methods for the analysis of continuous variation have been S developed using second degree statistics such as variance and covariance and successfully applied to crosses between two inbred lines. These have allowed the recognition of the more familiar phenomena associated with Mendelian genetics although they appear in the analyses in a new and less obvious form (MATHER 1949; BATEMAN...

3. The relatively stable derivatives obtained by selling fertile Fz plants. . . . . . . . . (a) Origin and behavior of amphidiploid lines. . . . . . . . . . . . . . . . . . . . . . . . . . . (b) Result of crossing amphidiploids with parental species. . . . . . . . . . . . . . . . . . . . . . . . . . . (1) Reciprocal backcrosses to rustica pzcmila. . . . . . . . . . . . . . . . . . . . . . . . ....

The pyrrolidine ring of nicotine has been shown to be formed from ornithine, glutamic acid, and proline (l-5). Although little information is available concerning the interrelationship of these three amino acids in higher plants, Al-pyrrolinedcarboxylate (in equilibrium with glutamic semialdehyde) has been shown to be a key intermediate in their interconversion in animals and microorganisms (6,...