Resumo

CASIERRA-POSADA, Fánor  e  GARCIA, Nehidy. Growth and dry matter partitioning of salt-stressed strawberry cultivars (Fragaria sp.). Agron. colomb. [online]. 2005, vol.23, n.1, pp.83-89. ISSN 0120-9965.

Ferti-irrigation often results in salts accumulating in strawberry culture soil. Strawberry cultivars (Fragaria sp.) response to increasing levels of NaCl was studied in a greenhouse experiment. ‘Sweet Charlie’, ‘Camarosa’ and ‘Chandler’ strawberry cultivars were grown in pots filled with soil in Tunja, Colombia. The soil in pots was gradually salinised by NaCl adding 0, 20, 40, 60 and 80 mM. kg^-1 of air dried soil. Plants were harvested 16 weeks after the treatment was begun. The accumulation of dry matter was measured in leaves, crowns, flowers, roots and fruits, as well as total leaf area, necrotic leaf area, specific leaf weight, dry and fresh weight per fruit and shoot:root ratio. The results revealed that salt accumulation in strawberry plants depressed vigour, retarded growth and reduced the production of dry matter. There was frequent mild to severe burning of leaf edges depending on salt concentration in the soil. ‘Sweet Charlie’ was more tolerant to salt stress compared to the other cultivars tested

Palavras-chave : Salinity; osmotic stress; NaCl; leaf area.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )