Abstract:
Plant diseaseis a main reduced yield and qualities in tomato production particularly sub-tropical and tropical regions including Thailand.Therefore, tomato production by using resistantvarietycanincrease their yield and reduced production costs.The objective ofthis study, 23 varieties/lineswere evaluatedfor yield and qualitiesin plastic-net house condition, i.e., 19 improvedlinesresistant tomatovarietiesandfour resistant check varieties (HAWAII 7996, R3034-3-10-N-UG, Ty52 andCXD227).All of tomato varieties/lineswere conducted at the experimental field of Nakhon Phanom University during dry season (October 2021-March 2022). Randomized complete block (RCB) design was used with 3 replications and5 plants per replication.The results clearly showed thatCLN2777-168-27-2-7-8-8and KKU-T47-1gave the highest fruit yield (2,253.7 and2,157.6 g./plant, respectively). TML46-N-12-N-early-NT, CLN2768-69-23-30-30-27-9andKKU-T47-10gave the highest fruit number (67.4, 53.5, 50.7 fruit/plant, respectively). The total soluble solids were found not significant all tomatolines, ranged to 4-6%brix. The highest number of seed per fruit(>100 seed) were found in KKU-T47-10, CLN2777-168-27-2-7-8-8, CLN3087F1-12-34-29-7-8-5-0, KKU-T47-1, KKU-T47-5 andTML46-N-12-N-early-NT tomato lines (116.3, 113.8, 111.8, 106.1, 102.4 and101.1 seed/fruit, respectively).Thus, mentioned lines couldbe used for release as commercial variety or potential breeding stock.