LAVIA Graciela Ines
IAPT/IOPB Chromosome Data 20. Malvaceae.
Lugar: Bratislava; Año: 2015 vol. 64 p. 1346 - 1346
MALVACEAEAbutilon pauciflorum St. Hil., 2n=14; Argentina, Corrientes, La, Se & So 13 (CTES, BH, LIL, GH).Abutilon terminale (Cav.) St. Hil., 2n=14; Argentina, Corrientes, La, Se & So 10 (CTES, GH).Gaya kelleri Krapov., 2n=12; Argentina, Misiones, Ke & Kel 10650 (CTES).Herissantia intermedia (Hessl.) Krap., 2n=14; Argentina, Chaco, Se 1007 (CTES, BAB).Hibiscus sororius L.f., 2n=52; Argentina, Corrientes, Ar, Sc, P, Fr & F 8605 (CTES).Hibiscus striatus Cav., 2n=52; Argentina, Entre Ríos, La, Se & So 16 (CTES, MGM, LIL, MEXU, SPF, GH, TEX, MO); Argentina, Corrientes, Se 1025 (CTES, BH, AAU, TEX).Malvastrum amblyphyllum R.E.Fries, 2n=24; Paraguay, Presidente Hayes, K, Cr & Sc 45256 (CTES); Paraguay, Boquerón, K, Cr & Sc 45386 (CTES, F, MEXU, G, GH).Malvastrum americanum (L.) Torr., 2n=24; Paraguay, Presidente Hayes K, Cr & Sc 45528 (CTES, G, MO).Malvastrum coromandelianum (L.) Garcke subsp. Coromandelianum, 2n=24; Paraguay, Boquerón, K, Cr & Sc 45276 (CTES, G, TEX).Malvastrum cristobalianum Krap., 2n=24; Paraguay, Boquerón, K, Cr & Sc 45319 (CTES, SI, G, FCQ, NY, LIL, SP, HILL, MO).Pavonia hastata Cav., 2n=56; Uruguay, Maldonado, La, Se & So 20 (CTES, BH, MEXU, TEX).Pavonia morongii S.Moore, 2n=56; Paraguay, Presidente Hayes, K, Cr & Sc 45249 (CTES).Pavonia sapucayensis R.E.Fries, 2n=56; Argentina, Corrientes, K 44410 (CTES, CHR, NSW, F, MBM, LIL, TEX, MO, WIS, GH, U, ASU).Tarasa meyeri Krapov., 2n=10; Argentina, Salta, K 47841 (SI, ESA, MO, US, MBH, SP, AAU, LPB, GH, F, ASU, WIS, NY).Urocarpidium limense (L.) Krap., 2n=30; Bolivia, La Paz, B 17999 (CTES).Wissadula subpeltata (OK) R.E.Fries, 2n=14; Argentina, Chaco Se 1008 (CTES, AAU, CANB, BH).Malvaceae constitutes a family of cosmopolitan distribution, with about 130 genera and 1600 species. Although they were carried out many cytogenetic studies in Gossypium and Malva, knowledge of the rest of the family is scarce. Known chromosome numbers in Malvaceae ranging from 2n = 10 in species of different genera to 2n = 196 in species of Abelmoschus , also present different basic numbers: 5, 6, 7, 8, 10, 11, 12, 13, 15, 17, 18, 19, 20, 29, 36; turning it into a family of interest to cytogenetic and evolutionary studies (Fernández, 1974, 1981; Fernández et al., 2003). In this work, we present chromosomic counts of 17 accessions of Malvaceae species in nine genera collected in four American countries, Argentina, Bolivia, Paraguay and Uruguay, in order to increase knowledge about this family and provide a basis for further studies as required. Chromosome counts were carried out in actively growing root-tips (10?15 mm long) from germinating seeds in Petri dishes, pretreated with 2 mM 8-hydroxyquinoline for 3 h at room temperature, and then fixed in 3:1 absolute ethanol: glacial acetic acid for 24 h, and preserved in ethanol 70°. The staining was performed using the technique of Feulgen.Literature citedFernández, A. 1974. Recuentos cromosómicos en Malváceas. Bol. Soc. Arg. Bot. 15: 403-410.Fernández, A. 1981. Recuentos cromosómicos en Malvales. Bonplandia 5: 63-71.Fernández, A., Krapovickas, A., LaviaLavia], G.I. & Seijo, G. 2003. Cromosomas de Malváceas. Bonplandia. Vol. 12: 141-145.LaviaLavia], G.I. & Fernández, A. 2004. Números cromosómicos en Hibiscus secc. Furcaria DC. (Malvaceae-Hibisceae). Bonplandia 13: 129-130.LaviaLavia], G.I., Fernández, A. & Krapovickas, A. 2007. Cromosomas de especies americanas de Sida (Malvaceae). Bonplandia 16: 255-258.