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& ____ (1972). Plant age and chromatographic pattern in Potentilla. Hereditas 72:149-152.
P. argentea, canescens, & norvegica: TLC on leaves of plants grown in growth chambers at different ages (in months). Showed only moderate influence of age on chromatographic pattern, more quantitative (intensities). Greatest differences in early stages of growth (up to 3 months).
Bate-Smith, E.C. (1962). Chromatography and taxonomy in the Rosaceae, with special reference to Potentilla and Prunus. J. Linn. Soc. Bot. 58:39-54.
Argentina is distinctive, with myricetin & leucodelphin, from rest of family. There are chemicals distinguishing Wolf's Trichocarpae from Gymnocarpace; and also Graciles from other groups. Many species seem to have one or more constituents characterizing them.
Borhidi, A. & Isepy, I. (1966). Statistical studies on Potentilla species. Acta Bot. Acad. Sci. Hung. 12:221-239.
P. thyrsiflora, related to P. collina; statistics of leaf pubescence, size, leaflet teeth and their sizes; in species complex. Discrimination analysis allowed P. leucopolitanoides to be separated definitely from P. leucopolitana but not from P. thyrsiflora.
Britikov, I.A. & Musatova, N.A. (1973). (Modelling of the stimulating effects of pollen during parthenogenesis of Potentilla argentea L.: effectiveness of proline). Fiziolog. Rast. 20:557-562. Translated as: Soviet Plant Physiology.
Several chemicals induced seed-set greater than water control, but in every case, pollinated flowers set much greater seed than either. Of these chemicals, proline and the enzymes papain and amylase had the most striking inducement effect. Casein hydrolyzate, ATP, and arginine had significant effect. Plant growth substances, nucleotides, RNase, coconut milk, and glutamic acid all had no effect.
Chaika, V.M., Sobolevskaya, K.A., & Minayeva, V.G. (1973). K chyemosistematike roda Potentilla L. Izv. Sibir. Otdel. Akad. Nauk SSSR ser. Biol. Nauk 2:31-36.
13 species of Potentilla of SE Altai Mts.: 4-7 flavenoids by paper chromatography. Limited study, but these may be useful to distinguish genera: Comarum, Potentilla s.str., Argentina.
Challice, J.S. (1974). Rosaceae chemotaxonomy and the origins of the Pomoideae. Bot. J. Linn. Soc. 69:239-259.
Leaf samples from 197 species, using paper chromatography. Only one Potentilla species used. Discussion of phylogeny of subfamilies, particularly v/v Pomoideae.
Christoff, M. & Papasova, G. (1943). Die genetischen Grundlagen der apomiktischen Fortpflanzung in der Gattung Potentilla. Zeitschr. Vererbungsl. 81:1-27.
220 crosses attempted, mostly among species of Potentilla s.str.; 24 species crossed in all; 15 hybrid progenies obtained. All sexual x sexual crosses had sterile F1s; most fertile F1s yielded high proportion of maternal F2.
Clausen, J., Keck, D.D., & Hiesey, W.M. (1940). Experimental studies on the nature of species I. Effect of varied environments on western North American plants. Carnegie Inst. Wash. Publ. 520:1-452.
Drymocallis glandulosa, pp. 26-124: taxonomic review, transplant studies, discussion; ecotypes formed all at diploid level. Potentilla gracilis complex, pp. 125-175: taxonomic revision, very high chromosome numbers and some aneuploids, transplant studies, discussion. P. drummondii and P. breweri,