translate English to French: In both sites, root elongation of seedlings and older plants were significantly greater than shoot elongation, yet in established plants, shoot biomass was much greater than root biomass (root/shoot ratios from 0.1 to 0.3).
Sur les deux sites, l'élongation des racines des plantules ainsi que celles des plantes plus âgées est significativement plus grande que l'élongation des tiges, et pourtant la biomasse totale des tiges des plantes établies est beaucoup plus grande que la biomasse racinaire (rapports racine:tige de 0.1-0.3).