Two sesquiterpene lactones belonging to the germacranolides were isolated from the leaves and stems of Helianthus annuus L. Their formation in the plant is light-dependent. Both sesquiterpene lactones ...

'Cavitation fatigue' is the increased susceptibility of a xylem conduit to cavitation as a result of its prior cavitation. It was investigated whether cavitation fatigue induced in vivo could be ...

Cultivated plants have been molded by human-induced selection, including manipulations of the mating system in the twentieth century. How these manipulations have affected realized parameters of the ...

Growing giant sunflowers isn't just about picking a big variety, you also need to think carefully about placement, irrigation ...

RUST (Puccinia helianthi Schw.) is a major hazard to sunflower production in a number of countries. The area devoted to sunflowers for edible oil in Canada, all in southern Manitoba, was reduced from ...

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Sunflower seeds, which come from the dried center of the sunflower plant (Helianthus annuus L.), are packed with healthy fats, protein, vitamins, and minerals (1). They’re delicious as a snack, in ...