A notable number of M2 dwarfs were obtained, and these are being crossed to marker stocks for
chromosome mapping and to other dwarf mutants in complementation tests. Two anthocyanin-deficient mutants are
likewise being tested and the stock increased. A substantial number (174) of ameristematic (blind) seedlings
appeared and unusual developmental disorders are suspected to be responsible for their high (28%) incidence. The
wiry leaf syndrome was common amongst leaf mutations, although the extent of expression was quite variable. Two
ghost mutants were also observed.
Holle, M., J. F. Fobes, and C. M. Rick The "hygienic" method of collecting plant parts.
After extensive research and assays of many different methods of handling fruits and other plant parts in the
field during our collecting trips in South America, we have adopted the following procedure, which other workers
might also find useful. To be effective the method must separate collections from different plants and simultaneously
keep together parts of the same plant. Other requirements include compactness, security in high winds, and
capacity to hold material from large populations. Our method consists essentially of rolling the plant parts in a
continuous piece of toilet paper. Several turns wrapped tightly around each group of specimens hold them together
securely and keep them separated from others. Notes can be
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