Publication Date
1993
Description
Large collections of subterranean clover lines were evaluated for the content of oestrogenic isoflavones formononetin, genistcin and biochanin A. Differences among the species Trifolium brachyalycinum, T. subterraneum and T. yanninuicum were determined mostly by differences in the content of individual isoflavone components rather than in total isoflavone content. The concentration of the most biologically active isoflavone formononetin was highest in T. yaminicum and lowest in T. brachycalycinum. There was extreme variation among lines for isoflavone contents. The variance among populations (means of lines from the same collection site) wns significant in all species, suggesting some influence of the environment of origin on oestrogen content. Flowering time and oestrogen content were largely independent. A preliminary screening for low values of formononetin maintained almost entirely the original genetic basis in T. brachycalycimum, delerrnined a certain reduction in T. subterraneum and caused a drastic loss of lines in T. yanninicum.
Citation
Piano, Efisio; Tava, A; Spanu, F; and Pecetti, L, "Variability of Oestrogen Content in Large Collections of Subterranean Clover and its Implications for Selection" (2024). IGC Proceedings (1993-2023). 7.
https://uknowledge.uky.edu/igc/1993/session39/7
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Variability of Oestrogen Content in Large Collections of Subterranean Clover and its Implications for Selection
Large collections of subterranean clover lines were evaluated for the content of oestrogenic isoflavones formononetin, genistcin and biochanin A. Differences among the species Trifolium brachyalycinum, T. subterraneum and T. yanninuicum were determined mostly by differences in the content of individual isoflavone components rather than in total isoflavone content. The concentration of the most biologically active isoflavone formononetin was highest in T. yaminicum and lowest in T. brachycalycinum. There was extreme variation among lines for isoflavone contents. The variance among populations (means of lines from the same collection site) wns significant in all species, suggesting some influence of the environment of origin on oestrogen content. Flowering time and oestrogen content were largely independent. A preliminary screening for low values of formononetin maintained almost entirely the original genetic basis in T. brachycalycimum, delerrnined a certain reduction in T. subterraneum and caused a drastic loss of lines in T. yanninicum.
