Populations showed significant differences in leaf
rolling score, measured at the beginning of the stress
period at 57 DAS, in which population 4 had the
lowest and population 2 had the highest leaf rolling
score (Table 4).
Mean drought score changed with time as a result of
the development of plant water deficit, i.e. mild (DS1)
to severe stress (DS6) (Table 5). Drought score developed
rapidly from 2.9 in DS2 (73 DAS) to 6.2 in DS3