Cereal progenitors differ in stand harvest characteristics from related wild grasses

The Journal of Ecology
Catherine PreeceColin P Osborne

Abstract

The domestication of crops in the Fertile Crescent began approximately 10,000 years ago indicating a change from a hunter-gatherer lifestyle to a sedentary, agriculture-based existence. The exploitation of wild plants changed during this transition, such that a small number of crops were domesticated from the broader range of species gathered from the wild. However, the reasons for this change are unclear.Previous studies have shown unexpectedly that crop progenitors are not consistently higher yielding than related wild grass species, when growing without competition. In this study, we replicate more closely natural competition within wild stands, using two greenhouse experiments to investigate whether cereal progenitors exhibit a greater seed yield per unit area than related wild species that were not domesticated.Stands of cereal progenitors do not provide a greater total seed yield per unit ground area than related wild species, but these crop progenitors do have greater reproductive efficiency than closely related wild species, with nearly twice the harvest index (the ratio of harvested seeds to total shoot dry mass).These differences arise because the progenitors have greater seed yield per tiller than closely related wil...Continue Reading

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Citations

Mar 15, 2019·The Plant Journal : for Cell and Molecular Biology·Nathan HughesCandida Nibau
Apr 13, 2021·Ecology and Evolution·Catherine PreeceColin P Osborne
Jul 20, 2020·Current Opinion in Plant Biology·Michael DingkuhnMatthew J Paul

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