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(A) Average root-zone temperature of the cool, ambient and warm treatments (n = 18), and (B) midday leaf stomatal conductance (gd) in response to cool, ambient and warm root-zone temperatures applied over a 60-d period from bud-burst to fruit-set in ‘Shiraz’ vines. The first measurements were made when leaves opposite the basal inflorescence had obtained an approximate area of 10 cm2.
