Study argues rice was domesticated at least three times

How fast was wild wheat domesticated?

Prehistoric cultivation of wild wheat in the Fertile Crescent led to the selection of mutants with indehiscent (nonshattering) ears, which evolved into modern domestic wheat. Previous estimates suggested that this transformation was rapid, but our analyses of archaeological plant remains demonstrate that indehiscent domesticates were slow to appear, emerging approximately 9500 years before the ...

Domesticated versus Wild Rice? Bring It Awn!

It was the best of times, it was the worst of times.

I. ABSTRACT The Twenties in the United States began with the Red Scare, which was fueled by many Americans’ fearful reactions to the growth of Communism in Russia. Additionally, twentieth century Americans were dealing with new heroes, Jazz, racism, Prohibition, the assembly line, and the growth of movies and radio. All was well when the stock market soared and the speakeasies poured, the Charl...

Existence of at least three weak solutions for a quasilinear elliptic system

In this paper, applying two theorems of Ricceri and Bonanno, we will establish the existence of three weak solutions for a quasilinear elliptic system. Indeed, we will assign a differentiable nonlinear operator to a differential equation system such that the critical points of this operator are weak solutions of the system. In this paper, applying two theorems of R...

The molecular basis of white pericarps in African domesticated rice: novel mutations at the Rc gene.

Repeated phenotypic evolution can occur at both the inter- and intraspecific level and is especially prominent in domesticated plants, where artificial selection has favoured the same traits in many different species and varieties. The question of whether repeated evolution reflects changes at the same or different genes in each lineage can now be addressed using the domestication and improveme...