Tolerance cultivar is a best control measure to reduce losses due to virus attack in the field. Study on growth and yield of new cultivars compared to the commercial ones is an important step in cultivar development. The objective of this research was to evaluate growth and yield performance of inoculated new chilli pepper hybrids by Cucumber Mosaic Virus (CMV) compared to a commercial and similar fruit size one. Twelve new hybrids and one commercial hybrid cultivar 'Prada', as a control, were evaluated in a completely randomized design with 3 replications. In the greenhouse experiment, H23 and H20 showed better vegetative growth compared to the other hybrids and control. Hybrid H17 showed the highest yield, followed by H5, H4 and H6 hybrids.

Superior hybrid and CMV tolerant cultivar development requires a pair of highly heterobeltiosis parents and both of which are CMV tolerant. Gene introgression has to be accomplished if the tolerance does not exist in the parents. The objective of this research was to employ DNA markers and morphological traits to identify CMV tolerant individuals in BC3 that were the most similar to their recurrent parents in order to shortcut the backcrossing cycle in chili pepper (Capsicum annuum L.). This research used fifteen BC3 populations generated from crosses between PBC1354 and PBC378 hybrid parents and tolerant parents of C1024, C1042 and C1043. The BC3 populations were previously selected for their CMV tolerance and were characterized by RAPD technique as well as morphological traits. Selection by means of both RAPD markers and morphological traits identified BC3 individuals with 99.9% similarity to their respective recurrent parent. B3A24-20, B3A29-13, B3A29-22, B3B12-13, B3B37-9, B3B12-25, B3C16-5, B3C16-16, B3C34-18 genotypes were 99.9% similar to PBC378; meanwhile, B3D11-8, B3D11-17, B3D38-5, B3E12-17, B3E20-22, B3E31-19 were 99.9% similar to PBC1354. Those genotypes were both similar to their recurrent parents and tolerant to CMV. The employed strategy shortened CMV tolerance gene introgression through backcross breeding.

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