Sentence examples for forms annual from inspiring English sources
The possibility of gene flow between cultivated and wild species of different crops was assessed, focussing on sunflower and its wild relatives or cultivated forms (annual Helianthus annuus, H. argophyllus, H. bolanderi, H. petiolaris, and perennial rigidus, H. tuberosus).
The accumulated xylem often forms annual rings composed of two zones: a relatively wide zone of spring wood (made up of large cells, characteristic of rapid growth) and a narrower zone of summer wood (smaller cells).
Secondly, the susceptibility or resilience to collection pressure varies among species owing to biological characters such as different growth rates (slow growing vs. fast growing), reproductive systems (vegetative or generative propagation; germination rates; dormance; apomixis) and life forms (annual; perennial; tree).
This issue has been regularly debated at the BMA's policy forming annual conference and recent calls for a change in the law have persistently been rejected.
Although many tropical trees form annual growth rings and can be aged from discs or cores, destructive sampling is not always an option for valuable or threatened species.
Here in Guatemala, we have to investigate a new range of Mesoamerican species to see if they consistently form annual rings and, if so, whether the width of those rings accurately reflects climate variability.
Phenotypic Plasticity: Development in the Wild, in The Evolution of Plant Form, Annual Plant Reviews, Barbara A. Ambrose and Michael D. Purugganan, eds.
High-intensity flowering patterns during the year differed statistically between some pairs of life-forms: annual herbs all life-forms and trees climbers (Table 5).
Life form (annual, biennial, perennial, shrub, tree, vine).
For this analysis, the eGFR values collected every 6 months were collapsed together to form annual averages.
– were selected because they form annual growth rings and comprise an important component of the forest community measured by their basal area or frequency (Baker, 2001; Baker et al., 2005).
