Abstract
The wildEchinochloa species,E. stagnina, is known to be extremely variable. Strains differing in chromosome number and in some characteristics including growth-form have been recognized in this species.
The artificial hybrid between the annual 12-ploid (2n=108;x=9) and the perennial 14-ploid (2n=126;x=9) strains (W662 and 60–10 respectively) by systematists considered to be bothE. stagnina, was examined cytologically. From the cytological evidence, it was pointed out that these two strains are distantly related and that each of them should be treated as a distinct species.
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Yabuno, T. Biosystematics ofEchinochloa stagnina (Retz.) P. Beauv., cytological relationship between the 12-and 14-ploid strains. Genetica 41, 311–315 (1970). https://doi.org/10.1007/BF00958913
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DOI: https://doi.org/10.1007/BF00958913