Evaluation in semi-controlled conditions of resistance to bacterial wilt of 19 varieties of tomato (lycopersion esculantum mill.)

This study is part of the search for effective and efficient control methods against bacterial wilt caused by Ralstonia solanacearum Smith for the improvement of tomato production in Burkina Faso. A screening experiment on nineteen (19) varieties of tomato was carried out at the research station of the former plant protection laboratory, in 2016, to select resistant or tolerant varieties to bacterial wilt. The test was arranged in Fisher block with 4 repetitions. After 2-week nursery, plants from two (02) to three (03) true leaves were subcultured at a rate of one foot into 5L pots containing previously well-sterilized culture substrate. Observations and measurements focused on the susceptibility of varieties to bacterial wilt and the evaluation of phenological parameters (height, crown diameter, number of inflorescences, number of flowers and number of fruits) by variety. The results indicate that the varieties (CRA 66, BF-Okitsu and F1 Platinum) are the least susceptible to wilting compared to the resistant control (F1 Mongal). In addition, the most productive varieties are Hawai 7996, F1 Platinum, FBT3, FBT1 and TML46 oblong. It is therefore necessary to continue research in an agronomic approach in the field on heavily infested soils before any recommendation.