Sources of Resistance to Bacterial Wilt and Fertility-Restoring Genotype for Cytoplasmic Male Sterility

Monday, September 26, 2011
Kona Ballroom
Jae Moo Lee , Horticulture, Kyungpook National University, Daegu, Korea, Republic of (South)
Byung-Soo Kim , Kyungpook National Univ, Daegu 702-701, Korea, Republic of (South)
Ngoc Hung Tran , Horticulture, Kyungpook National University, Daegu, Korea, Republic of (South)

Thirty six accessions including sources of resistance to bacterial wilt, susceptible checks and commercial cultivars were tested for resistance to two strains of bacterial wilt pathogen, Ralstonia solanacearum in 2010. The sources of resistance showed high resistance to bacterial wilt with some variation among the accessions. KC995, KC999 and KC1009 in particular showed a good resistance comparable to the well-known MC 4 and MC 5. A significant interaction between genetic resources and strains indicating that there was some differential reactions. Horticultural characters of the sources of resistance to bacterial wilt were recorded. Most of them were chile type in fruit shape. The resistant selections were crossed to a cytoplasmic male sterile line to identify the genotype for CMS-fertility restoring gene (Rf). The results will be reported and discussed.

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