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Table 2 Average performance across countries of the top four varieties included in the multi-location trials

From: Connecting smallholder tomato producers to improved seed in West Africa

Variety name 2006–2007—ATa 2007–2008—MLTa Change
SS Yield SS Yield SS (%) Yield (%)
‘Atak’ 0.85 33.56 1.82 16.58 +113 −51
‘Bybal’ 0.86 30.07 1.65 14.54 +91 −52
‘GemPride’ 1.06 32.19 1.70 12.48 +60 −61
‘Yosra’ 1.25 34.46 1.51 16.12 +21 −53
‘Roma VF’ 3.34 28.75 3.29 6.90 −2 −76
  1. Cultivars were analyzed in the advanced trial (AT) of year 2 (2006–2007) and the multi-location trial (MLT) of year 3 (2007–2008). Changes in symptom severity (SS) scores and total yields are indicated. ‘Roma VF’ is included as the susceptible check. Yield was measured in tons per hectare (t/ha)
  2. ToLCD symptom severity scale where 0 = no symptoms, 1 = mild leaf curling, 2 = leaf curling, light green to yellow discoloration and vein purpling; 3 = stunting, distorted growth and strong upward leaf curling and vein swelling and purpling; and 4 = severe stunting and distorted growth, upward leaf curling and vein purpling, as established in Lapidot and Friedmann [39]. Plants were evaluated at flowering, fruiting, and first harvest
  3. aAdvanced trails (AT) were conducted on NARS research stations; multi-location trials (MLT) were conducted on farmers’ fields