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A study of variation in the cytotypes of Dryopteris spinulosa


, : A study of variation in the cytotypes of Dryopteris spinulosa. Rhodora 68(773): 59-92

U.S. material of P. intermedia is diploid and of D. spinulosa tetraploid. Where the 2 spp. mingle, triploid hybrids (P. triploidea) occur abundantly. It is suggested that D. spinulosa is an allopolyploid, 1 parent being a variant of D. intermedia and the other unknown.

US$19.90

DOI: 10.2307/23311604


Other references

Whitson, P.A.; Chen, Y.M.; Whitson, P.A., 1997: Salivary endothelin and its response to postural changes in humans. Acta Physiologica Scandinavica 160(3): 291-293

Snacken, R.; Hanquet, G.; Maes, S.; Brochier, B., 2006: Avian flu: what kind of danger for public health?. Revue Medicale de Bruxelles 26(6): 481-483

Nestor, K.E., 1977: The influence of long term selection for increased egg production and increased body weight in the turkey. Turkeys were selected for increased egg production over 16 generations and for increased 16-day weight over 10 generations. Body weight at 16 wk of age in females was significantly correlated genetically with 180-day egg production, av. and max. c...

Koch Bernhard C.; Hutchinson Richard W.; Free Bernhard, 1987: The Gold King precious metal deposit, Silverton Caldera, San Juan volcanic field, Southwest Colorado. Abstracts with Programs - Geological Society of America 19(5): 287

Yi-Chen; Wu, M-Xuan.; Jie-Liu; Ma, X-Jie.; Shi, J-Li.; Wang, S-Nan.; Zheng, Z-Quan.; Guo, J-You., 2017: Acute and sub-acute oral toxicity studies of the aqueous extract from radix, radix with cortex and cortex of Psammosilene tunicoides in mice and rats. Psammosilene tunicoides is one of the important ingredients of a famous Chinese traditional medicine formulation "Yunnan Baiyao". Also, this plant is commonly used as an anodyne and hemostatic agent in southwest China. Currently, little...

Crawford, S.H.; Rogers, R.L., 1975: Metribuzin combinations with preplant incorporated herbicides. Pre-sowing and pre-em. applications of metribuzin tested at 0.38-0.75 lb/acre plus or minus trifluralin and other dinitroaniline compounds provided generally good control of annual grasses and broad-leaved weeds in soybeans, although the relative...

Henrard, L.; Pierard, L.; Limet, R., 1982: Treatment of Prinzmetal's angina with normal coronary vessels by thoracic sympathectomy. Two cases of Prinzmetal angina with normal coronary arteries are reported: coronary spasm was demonstrated in the left anterior descending artery in the first, and in the right coronary artery in the second case. Invalidating angina persisted desp...

Galindo, R.C.; Muñoz, P.M.; de Miguel, Mía.J.; Marin, C.M.; Blasco, Jé.M.; Gortazar, C.; Kocan, K.M.; de la Fuente, Jé., 2008: Differential expression of inflammatory and immune response genes in rams experimentally infected with a rough virulent strain of Brucella ovis. Infection of sheep with Brucella ovis results in ovine brucellosis, a disease characterized by infertility in rams, abortion in ewes and increased perinatal mortality in lambs. During the course of the infection both the ovine immune response and...

Jackson S.L.O.; Lambert H.P., 1967: Chloramphenicol anti infect. British Medical Journal 5546: 243

Baruch, Z.; Nassar, J.; Bubis, J.; Torrealba, K., 2003: Genetic, quantitative, environmental and geographical distances among populations of a dominant C4 grass from Neotropical savannas. Ecological Society of America Annual Meeting Abstracts 88: 23