Comparison of flavonoid patterns in wild and cultivated Hordeum species
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TLDR
The results indicate that the process of cultivation has had a noticeable effect on flavonoid synthesis in barley leaves and they confirm the taxonomic status of the H. vulgare complex from all the other species.Abstract:
Seven flavonoids have been identified variously in leaf extracts of 18 wild Hordeum species. Six are C-glycosylflavones. namely isovitexin. iso-orientin and iso-orientin 3′-methyl ether and the respective 7-0-glucosides. The seventh is the flavone 0-glucoside. tricin 5-glucoside. Several other C-glycosylflavones based on iso-orientin 3′-methyl ether are present in trace amounts. The pattern is essentially a simple one, with little variation between species. It contrasts markedly with the much more complex pattern of flavonoids found in different races of cultivated barley. The results indicate that the process of cultivation has had a noticeable effect on flavonoid synthesis in barley leaves and they confirm the taxonomic separation of the H. vulgare complex from all the other species.read more
Citations
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Journal ArticleDOI
Intraspecific flavonoid variation
TL;DR: This review is concerned with variation of flavonoid patterns within species, and eight categories of variation are discussed: qualitatively invariant pigment profiles, 2) quantitative variation, 3) flavonoids races that do not correspond to recognized taxonomic groups, 4) Flavonoid races that does correspond to recognizing taxonomicgroups, 5) flav onoid profile differences between different ploidy levels, 6) differences between organs or between tissues, and 8) environmentally influenced flavonoidal profiles.
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A differential rate of regional distribution of barley flavonoid patterns in Ethiopia, and a view on the center of origin of barley.
TL;DR: The concept for the centre of origin of barley is discussed, the ruling out of the possibility of Ethiopia being the centre for barley is questioned, and the need for archaelogical and genetical evidence on this issue is highly recommended.
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Flavonoid variations in Avena species
TL;DR: Twenty-five Avena species were investigated for their flavonoids and four new species were identified, including vitexin 2″-rhamnoside and tricin 7-diglucoside, which are cytogenetically Similar to Avena 1, 2, 3 and 4.
References
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Book ChapterDOI
The Origin and Evolution of Cultivated Barley
TL;DR: The ordinary cytogenetical methods used for the studies of the origin of amphidiploid crop plants, such as wheat, tobacco, and cotton, cannot be applied to barley.
Journal ArticleDOI
The taxonomy and nomenclature of the wheats, barleys, and ryes and their wild relatives.
TL;DR: The correct name for the tribe that contains the wheats, barleys, and ryes and their wild relatives is TRITICEAE Dumort.
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Five Seasons at the Pre-Pottery Neolithic Village of Beidha In Jordan
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The time rate and mechanism of chromosome elimination in Hordeum hybrids
TL;DR: It is suggested that chromosome elimination in Hordeum hybrids may be caused by a disturbed control of protein metablism in hybrid seeds and perhaps H. bulbosum chromosomes are selectively eliminated because they are less efficient than H. vulgare chromosomes at forming normal attachments to spindle protein.