Based on the data below, which of these tree genotypes of black oak (Quercus velutina) appeared to be most capable of avoiding dehydration? Which appeared to be most capable of tolerating dehydration? And which displayed the most phenotypic plasticity in response to drought? Justify your answers.
Genotype Treatment at Full hydration at Turgor Loss Point at Root Ψ of -4 MPa
A Irrigated -1.5 -2.1 65
Drought -1.9 -2.5 58
B Irrigated -1.1 -1.6 45
Drought -1.5 -2.1 44
C Irrigated -0.9 -1.4 75
Drought -1.6 -2.2 62