Cellular anatomy of tomato stems in response to far-red light 2 33 Figure 2.4. Traits measured for shoot architecture phenotyping of S. lycopersicum plants at 21 dag. The picture is an illustration of (a) stem length and internodes, (b) petiole length and rachis length, and (c) leaf area is highlighted in black outline. WL M82 WL+FR M82 WL MM WL+FR MM 0 50 100 150 200 250 Stem length (mm) *** *** Hypocotyl length Internode 1 Internode 2 Internode 3 Internode 4 Internode 5 Internode 6 0 20 40 60 80 Tissue type Length (mm) WL M82 WL+FR M82 WL MM WL+FR MM ** *** *** *** *** *** *** ** *** Petiole 1 Petiole 2 Petiole 3 Petiole 4 Petiole 5 Petiole 6 Petiole 7 0 20 40 60 80 WL+FR MM WL MM WL+FR M82 WL M82 Tissue type Length (mm) Rachis 1 Rachis 2 Rachis 3 Rachis 4 Rachis 5 Rachis 6 Rachis 7 0 50 100 150 WL+FR MM WL MM WL+FR M82 WL M82 Tissue type Length (mm) (a) (b) (c) (d) Figure 2.5. Stem and petiole lengths of three-week-old M82 and Moneymaker plants after seven-day WL and FR+WL treatments. The data include measurements of (a) stem length, (b) internode length, (c) petiole length, (d) rachis length. Asterisks indicate significance between WL and WL+FR as followed: * p≤0.05; ** p≤0.01, *** p≤0.001. Biological replicates n=18, the experiment was repeated three times.
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