Fig. 9.

The HsDry2.2 locus is associated with reduced leaf senescence under drought. (A) Representative images used for analysis of senescence (early water-limited, WL), which was measured as the difference in the proportion of yellow-brown areas out of the total canopy area between two sets of images taken at 66 and 78 d after planting (DAP). The analysis was conducted using a custom-made software. (B) Genotype (left) and genotype × environment (right) interaction plots for leaf senescence. Hv/Hv, homozygous for the Barke cultivated allele; Hs/_, homozygous or heterozygous for the wild HID062 allele. Different letters indicate significant differences at P<0.05 (Student’s t-test).