Phycella

Abstract: RESUMEN Las determinaciones de ADN nuclear realizadas muestran que el valor 2C para Rhodolirium montanum Phil. (2n=2x=16) es de 17,39 pg y de 15,16 pg para Phycella ignea (Lindl.) Lindl. (2n=2x=16). Sin embargo, el tetraploide Phycella scarlatina Ravenna (2n = 4x = 32) tiene un valor de ADN 2C de 30,63 pg , el cual es concordante con su nivel de ploidia.

Abstract: The family Amaryllidaceae is widely distributed in Chile and South America Ravenna recognized 11 genera and at least three of them have ornamental value: Miltinea Ravenna, endemic to Chile consists of only one species, Miltinea maulensis (Ravenna) Ravenna; Phycella Lindley, endemic to Chile, consisting of four species, distributed from the Elqui valley in Northern Chile up to the Arauco region in the South, and Rhodophiala C Presl distributed in Southern Brazil, Uruguay, Bolivia, Argentina and Chile with about 40 species Currently, traditional taxonomic information is insufficient to differentiate the genera of Amaryllidaceae in Chile For this reason cytotaxonomy was used as a source of taxonomic evidence The object ive of th is research was a comparative study of the karyotypes of the three Amaryllidaceae genera growing in Chile in order to clarify their taxonomic position The studied species were: Miltinea maulensis (Ravenna) Ravenna, Phycella australis Ravenna, Rhodophiala araucana (Phil) Traub, Rhodophiala montana (Phil) Traub, and Rhodophiala pratensis (Poepp) Traub The results indicated that Miltinea maulensis and Phycella australis have very similar karyological characteristics: same chromosome number, chromosome karyotype formula, and indexes

Abstract: RESUMEN Las determinaciones de ADN nuclear realizadas muestran que el valor 2C para Rhodolirium montanum Phil. (2n=2x=16) es de 17,39 pg y de 15,16 pg para Phycella ignea (Lindl.) Lindl. (2n=2x=16). Sin embargo, el tetraploide Phycella scarlatina Ravenna (2n = 4x = 32) tiene un valor de ADN 2C de 30,63 pg , el cual es concordante con su nivel de ploidia. Angiosperms are the most intensively studied major group of organisms with published C-values varying about 2000-fold for a number over 4,400 studied species (Leitch et al . 2010). However, C-values for South American plants are scarce, which has been a preoccupation for researchers interested in study trends on genome size evolution of global floras (Bennett & Leitch 2005). In the case of Chilean angiosperms only 12 continental species have been studied and belong to seven families (ca. 0.24% of the Chilean angiosperms). Rhodolirium and Phycella are two genera belonging to Amaryllidaceae that inhabit Chile. C-values have not been published for Chilean species of Amaryllidaceae, and only a previous contribution has been documented for species of the genera

Abstract: The family Amaryllidaceae is widely distributed in Chile and South America. Ravenna recognized 11 genera and at least three of them have ornamental value: Miltinea Ravenna, endemic to Chile consists of only one species, Miltinea maulensis (Ravenna) Ravenna; Phycella Lindley, endemic to Chile, consisting of four species, distributed from the Elqui valley in Northern Chile up to the Arauco region in the South, and Rhodophiala C. Presl. distributed in Southern Brazil, Uruguay, Bolivia, Argentina and Chile with about 40 species. Currently, traditional taxonomic information is insufficient to differentiate the genera of Amaryllidaceae in Chile. For this reason cytotaxonomy was used as a source of taxonomic evidence. The object ive of th is research was a comparative study of the karyotypes of the three Amaryllidaceae genera growing in Chile in order to clarify their taxonomic position. The studied species were: Miltinea maulensis (Ravenna) Ravenna, Phycella australis Ravenna, Rhodophiala araucana (Phil.) Traub, Rhodophiala montana (Phil.) Traub, and Rhodophiala pratensis (Poepp.) Traub. The results indicated that Miltinea maulensis and Phycella australis have very similar karyological characteristics: same chromosome number, chromosome karyotype formula, and indexes.