Transpiration and leaf growth of potato clones in response to soil water deficit
Souza, André Trevisan de, Streck, Nereu Augusto, Heldwein, Arno Bernardo, Bisognin, Dilson Antonio, Winck, José Eduardo Minussi, Rocha, Thiago Schmitz Marques da, Zanon, Alencar Junior
Sci. agric. (Piracicaba, Braz.)
DATA DE PUBLICAÇÃO
Potato (Solanum tuberosum ssp. Tuberosum) crop is particularly susceptible to water deficit because of its small and shallow root system. The fraction of transpirable soil water (FTSW) approach has been widely used in the evaluation of plant responses to water deficit in different crops. The FTSW 34 threshold (when stomatal closure starts) is a trait of particular interest because it is an indicator of tolerance to water deficit. The FTSW threshold for decline in transpiration and leaf growth was evaluated in a drying soil to identify potato clones tolerant to water deficit. Two greenhouse experiments were carried out in pots, with three advanced clones and the cultivar Asterix. The FTSW, transpiration and leaf growth were measured on a daily basis, during the period of soil drying. FTSW was an efficient method to separate potato clones with regard to their response to water deficit. The advancedclones SMINIA 02106-11 and SMINIA 00017-6 are more tolerant to soil water deficit than the cultivar Asterix, and the clone SMINIA 793101-3 is more tolerant only under high solar radiation.
- Transpiration rate response to water deficit during vegetative and reproductive phases of upland rice cultivars.
- Transpiration and stomatal resistance variations of perennial tropical crops under soil water availability conditions and water deficit
- TRANSPIRAÇÃO E CRESCIMENTO FOLIAR DE GENÓTIPOS DE BATATA EM FUNÇÃO DA FRAÇÃO DE ÁGUA TRANSPIRÁVEL NO SOLO
- Response of Leaf Water Potential, Stomatal Resistance, and Leaf Rolling to Water Stress
- LEAF TEMPERATURE AND TRANSPIRATION OF PEQUI TREES WITH AND WITHOUT WATER RESTRICTION