Evaluation of African marigold (Tagetes erecta L.) genotypes for yield and resistance to bacterial wilt pathogen, Ralstonia solanacearum
Keywords:
African marigold, Bacterial wilt, Marigold genotypes, Tagetes erecta, Ralstonia solanacearumAbstract
Eight African marigold (Tagetes erecta L.) genotypes (5 F1 hybrids, 2 varieties and 1 local collection) were evaluated for yield and resistance to bacterial wilt during June to September 2016 in a bacterial wilt sick plot at Agricultural Research Station, Mannuthy. F1 hybrids evaluated were Maria 91, Rupa, Sakura 031, Royal Orange and P-4. Along with the F1 hybrids, two varieties from IIHR viz., Arka Agni and Arka Bangara 2, and one local collection, M-1, were also included in the study. The genotypes showed wide variation with respect to plant characters, floral characters, yield and yield attributes as well as bacterial wilt incidence.The genotype‘P-4’ was found promising with good plant characters, high yield (1.036 kg/plant), and large sized flowers but was moderately susceptible to bacterial wilt. The local collection ‘M-1’ was found completely resistant to bacterial wilt but had low yield (0.234 kg/plant) and poor quality flowers, while the F1hybrid ‘Sakura 031’ was found highly susceptible with 100 per cent wilt incidence.References
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