“…As a matter of fact, a case of this kind is known from similar material, viz. Hieracium robustum (GUSTAFSSON and NYGREN, 1946). In this case the temperature was so low in certain years that plants cultivated in the open only exhibited mitosis in the P.M.C's, while the specimens grown in greenhouses showed meiosis.…”
Section: Scheme Showing Behaviourmentioning
confidence: 84%
“…Antennccrin, Arnica, Erigeron. Eupcforiurn, Eu-Hicrcccinm, Poa, and Potentilla ( GUSTAFSSON, 1946). In his work on Leontodon hispidus BERGMAN showed (1935 a ) that there was a mitotic division in retarded P.M.C's of this species.…”
Section: Pairing Atmentioning
confidence: 96%
“…Mitotic divisions in the P.hl.C's are best known from the genus Nieracium ( GUSTAFSSON, 1935( GUSTAFSSON, , 1939( GUSTAFSSON, , 1942GENTCHEFF, 1937GENTCHEFF, , 1941GENTCHEFF and GUSTAFSSON, 1940;GUSTAFSSON and NYGREN. 1946).…”
“…As a matter of fact, a case of this kind is known from similar material, viz. Hieracium robustum (GUSTAFSSON and NYGREN, 1946). In this case the temperature was so low in certain years that plants cultivated in the open only exhibited mitosis in the P.M.C's, while the specimens grown in greenhouses showed meiosis.…”
Section: Scheme Showing Behaviourmentioning
confidence: 84%
“…Antennccrin, Arnica, Erigeron. Eupcforiurn, Eu-Hicrcccinm, Poa, and Potentilla ( GUSTAFSSON, 1946). In his work on Leontodon hispidus BERGMAN showed (1935 a ) that there was a mitotic division in retarded P.M.C's of this species.…”
Section: Pairing Atmentioning
confidence: 96%
“…Mitotic divisions in the P.hl.C's are best known from the genus Nieracium ( GUSTAFSSON, 1935( GUSTAFSSON, , 1939( GUSTAFSSON, , 1942GENTCHEFF, 1937GENTCHEFF, , 1941GENTCHEFF and GUSTAFSSON, 1940;GUSTAFSSON and NYGREN. 1946).…”
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