Screening Tomato Varieties for Their Bacterial Wilt Resistance Over Seasons in Northeast Thailand

Screening of Amaranthus sp. Varieties for Resistance to Bacterial Wilt Caused by Ralstonia solanacearum

“…Thus, amaranth seemed to be more susceptible to bacterial wilt in the dry season with higher daily temperatures than in the rainy season. Our results are similar to that of Techawongstien et al [24], who reported that bacterial wilt was more severe in the dry season for tomato plants cultivated on contaminated soils than in the rainy season. Similarly, Singh et al [25] reported the high susceptibility of two varieties (one highly susceptible and one moderately resistant) after inoculation of their strain of R. solanacearum and incubation of the plants at 30 • C. In this study no wilting was recorded at 20 • C. In Taiwan, a comparative study of three strains of R. solanacearum showed in tomato and potato crops that the strains were more virulent at 24 • C to 28 • C than at 20 • C with less severity at 24 • C than 28 • C [26].…”

Cytological and physiological basis for tomato varietal resistance against Alternaria alternata

“…This innate resistance in tomato plants is due to the varying extent of defences among different varieties. 16 -18 Techawongstien et al 19 also screened tomato varieties for their innate resistance against bacterial wilt and declared three varieties as having best resistance (20% wilt intensity). These three varieties were thus recommended for agricultural and breeding programmes in Thailand.…”