Directional selection for flowering time leads to adaptive evolution in Raphanus raphanistrum (Wild radish).

ABSTRACT: Herbicides have been the primary tool for controlling large populations of yield depleting weeds from agro-ecosystems, resulting in the evolution of widespread herbicide resistance. In response, nonherbicidal techniques have been developed which intercept weed seeds at harvest before they enter the soil seed bank. However, the efficiency of these techniques allows an intense selection for any trait that enables weeds to evade collection, with early-flowering ecotypes considered likely to result in early seed shedding. Using a field-collected wild radish population, five recurrent generations were selected for early maturity and three generations for late maturity. Phenology associated with flowering time and growth traits were measured. Our results demonstrate the adaptive capacity of wild

SUBMITTER: Ashworth MB 

PROVIDER: S-EPMC4831463 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature