How gathering wild rice under human-mediated drought stress could have inadvertently paved the way to Asian rice incipient domestication and cultivation - Archive ouverte HAL Access content directly
Journal Articles The Holocene Year : 2021

How gathering wild rice under human-mediated drought stress could have inadvertently paved the way to Asian rice incipient domestication and cultivation

Abstract

In eastern China, on the southern end of the Yangtze Valley, early Holocene hunter-gatherers were foraging various plants, including wild rice – Oryza rufipogon Griff. – an aquatic and perennial plant which is the wild progenitor of domesticated rice. According to optimal foraging theory, these foragers should have tried to enhance the efficiency of harvesting wild rice seeds by draining water around the plants before seeds ripened and shattered. This proto-cultivation practice led to unintended consequences given that wild rice responds to drought stress owing to its phenotypic plasticity. Plant and panicle architectures were modified with transitions to more compact and erect tillers and to a closed panicle shape. They provide incentives to early foragers for intensifying their proto-cultivation practices and so could have also triggered initial cultivation of rice. They also triggered incipient domestication of rice, starting by the transition to selfing. According to this narrative, it is even possible that rice incipient domestication preceded cultivation.
Fichier principal
Vignette du fichier
09596836211060492.pdf (268.29 Ko) Télécharger le fichier
Origin : Explicit agreement for this submission

Dates and versions

hal-03461569 , version 1 (22-03-2023)

Identifiers

Cite

Serge Svizzero. How gathering wild rice under human-mediated drought stress could have inadvertently paved the way to Asian rice incipient domestication and cultivation. The Holocene, 2021, 32 (3), pp.095968362110604. ⟨10.1177/09596836211060492⟩. ⟨hal-03461569⟩
17 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More