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Fig. 2 | BMC Plant Biology

Fig. 2

From: Identification of candidate genes for drought tolerance in coffee by high-throughput sequencing in the shoot apex of different Coffea arabica cultivars

Fig. 2

Predawn leaf water potentials (Ψ pd) measured in plants of C. arabica. Rubi (RUB, triangle) and IAPAR59 (I59, square) cultivars were grown under control (C, open symbols) and drought (D, black symbols) conditions. Ψ pd values (expressed in mega-Pascal, MPa) were measured once a week during the 2009 dry season (23-month-old plants) (a). The time scale is in days and months (dd/mm, from 20/05 to 02/10). Vertical bars are standard deviations (n = 9 leaves) and the dashed vertical line (20/08) represents the harvest point of plagiotropic buds for RNA extraction for 454 sequencing and leaves for microscopic analyses. b Ψ pd of Rubi and IAPAR59 plants (47-month-old plants) measured at the end of the 2011dry season. In this case, Ψ pd values ranged from -0.1 to -0.2 MPa for the control conditions, but were below (< -4.0 MPa = severe drought) the range of use of a Scholander-type pressure chamber for drought conditions

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