منابع مشابه
Chromosome-Numbers in Bromeliaceae
Eighty-three chromosome counts are reported for 72 taxa of the Bromeliaceae. Fifty-eight of these counts are the first known chromosome number reports for their respective taxa. A model of chromosomal evolution in the Bromeliaceae (n = 25) is presented. The model is parsimonious and consistent with existing data on meiotic chromosome numbers within the family and in the closely related Vellozia...
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There are several reasons why this book might be of interest to a TEX user. First, LTEX has a prominent place in the book. Second, the book describes a very interesting offshoot of literate programming, a topic traditionally popular in the TEX community. Third, since a number of TEX users work with data analysis and statistics, R could be a useful tool for them. Since some TUGboat readers are l...
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Aerial parts of 38 taxa, distributed in 21 genera and all three subfamilies of the Bromeliaceae have been examined for the presence of betaines. Glycinebetaine and trigonelline were isolated from all the plants studied, although the yields of both compounds were low. For glycinebetaine, values (based upon dry weight) varied from 0.0004% for Pitcairnia corallina to 0.087% for Tillandsia usneoide...
متن کاملPollen morphology and viability in Bromeliaceae.
Pollen morphology characterization is important in taxonomy, conservation and plant breeding, and pollen viability studies can support breeding programs. This study investigated pollen morphology and male fertility in 18 species of Bromeliaceae with ornamental potential. For morphological characterization, pollen grains were acetolyzed and characterization of exine was done using scanning and t...
متن کاملA new combination in Lapanthus (Bromeliaceae)
A new combination, Lapanthus vidaliorum (O.B.C. Ribeiro & C.C. Paula) Louzada & Wand. is proposed for Orthophytum vidaliorum O.B.C. Ribeiro & C.C. Paula. In addition notes on taxonomy, geographic distribution and conservation are provided.
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ژورنال
عنوان ژورنال: American Journal of Botany
سال: 1992
ISSN: 0002-9122,1537-2197
DOI: 10.1002/j.1537-2197.1992.tb13695.x