A Numerical Analysis of Flavonoid Variation in Arnica Subgenus Austromontana (Asteraceae)

Wolf, Steven J.; Whitkus, Richard

doi:10.1002/j.1537-2197.1987.tb12148.x

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…The flavonoids found by Wolf and Denford (l984a) are presented in (Wolf and Denford, 1984a). Numerical analysis of an expanded database involving the entire subgenus resulted in all 11 populations of A. gracilis sampled segregating as a cohesive group quite distinct from any other member of the subgenus (Wolf and Whitkus, 1987). This was taken as further support for recognition of A. gracilis as a species in its own right.…”

Section: Arnica Gracilismentioning

confidence: 97%

“…Multivariate analysis using high speed computational technology eliminates this problem. This approach was used by Wolf and Whitkus (1987) in a statistical analysis of flavonoid profiles of 113 populations representing all nine species of Arnica subgenus Austromontana. To a very substantial degree the numerical analyses confirmed the evolutionary hypotheses erected by Wolf and Denford (1984b).…”

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Flavonoids of the Sunflower Family (Asteraceae)

Bohm

Stuessy

2001

119

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This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machines or similar means, and storage in data banks. This book is dedicated to:Arthur Cronquist Outstanding plant systematist and major contributor to understanding taxonomic relationships within Asteraceae and Ralph E. Alston (1925Alston ( -1967) Visionary natural products chemist and geneticist who pioneered the use of chemical data in studies of plant systematics and evolution PrefaceCertainly many of the readers of this book will remember the early developments of chemosystematics in the late 1950s. We ourselves remember the excitement of these new data bearing on plant interrelationships. The hopes were high, the techniques were rapidly evolving, the quantities of data were large, and young workers were eagerly enthusiastic. Some even went so far as to predict that chemical data would soon replace morphological information as the basis for plant classification. These overly zealous predictions did not materialize, of course, as the history of plant systematics has amply shown during the past two centuries. If there is any distinct characteristic of systematics it is synthesis, as Lincoln Constance (1964) called it, the "unending synthesis." New tools generate new data and provide insights on additional dimensions of plant relationships. This will never change-we will continue to discover new tools and new data in the years ahead, and they will continue to be incorporated into the predictive general reference system of classification.The earlier efforts in chemosystematics focused on secondary plant products: alkaloids, betacyanins, carbohydrates, cyanogenic glycosides, glucosinolates, lipids, terpenoids, and especialiy flavonoids. The latter were particularly well suited for chemosystematic investigation for several reasons: ease of isolation and characterization, small amounts of plant material needed for analysis, stability of compounds especially through routine preparation of herbarium specimens, and low cost to obtain useful information. As a result of these considerable advantages, literally thousands of studies on use of flavonoids in plant systematics have been published. Although now with the present zest for macromolecular data from DNA restriction sites and sequences, there are fewer workers and laboratories dedicated to flavonoid chemosystematic studies; twenty years ago they were the new currency of exciting data in plant systematics.Because of many workers historically interested in the sunflower family, Asteraceae (or Compositae), in part due to its large size (approximately 23,000 species;Bremer, 1994), and because hundreds of flavonoid compounds were discovered in this family, many chemosystematic investigations have been completed on various taxa. Many studies came from the laboratories of R. A. Alston, B. L. Turner, and T. J. Mabry in the Department of Botany ...

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Section: Arnica Gracilismentioning

confidence: 97%

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confidence: 99%