Populations of arable weed species show intra-specific variability in germination base temperature but not in early growth rate.

ABSTRACT: Key plant traits affecting growth performance can differ among and within species, influencing competitive plant community dynamics. We determined the intra-specific variability of germination base temperature among 13 arable weed species and the seedlings' early post-emergence relative growth rate among 21 species in climate chamber and green house experiments. Intra-specific variability was quantified with two seed populations (originating from contrasting climate in Germany & France) for the germination base temperature of 6 species and for the early growth rate of 16 species. Inter-specific variability for both traits was always higher than intra-specific variability. Within a given species, we found that germination base temperatures were higher in seeds stemming from colder climate p

SUBMITTER: Burger J 

PROVIDER: S-EPMC7546504 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature