Connecting smallholder tomato producers to improved seed in West Africa

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

Variety name	2006–2007—AT^a		2007–2008—MLT^a		Change
Variety name	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

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)
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
^aAdvanced trails (AT) were conducted on NARS research stations; multi-location trials (MLT) were conducted on farmers’ fields

ISSN: 2048-7010