This study was conducted to assess the genetic variability and correlation of phenotypic characteristics in 12 tomato (Solanum lycopersicum L.) genotypes including 11 WorldVeg and one commercial variety (Pusa Ruby) in Terai (plain) region of Nepal in 2021–2022. This experiment was laid out in a randomized complete block design with three replications. The phenotypic traits, including days to 50% flowering, plant vigor and height, fruit number/plant, fruit yield, fruit weight and diameter, fruit firmness and fruit pericarp thickness, and total soluble solids (TSS) content of the fruits, were studied. Analysis of variance revealed significant differences among the genotypes for all the traits except for plant vigor. The genotype of AVTO1705 resulted the highest fruit yield (2.9 kg/plant) than Pusa Ruby, a commercial check (0.5 kg/plant). The phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variation (GCV) for all the traits and PCV values were maximum for the number of fruits, fruit yield, and fruit weight. High PCV, GCV, and genetic advance (GA) were observed for yield, fruit weight, and plant height, respectively, indicating the additive gene effect. High heritability for fruit yield/plant and plant height inferred the phenotypic selection for their genetic improvement. Fruit yield was significantly (P<0.05) positively correlated with the fruit number and fruit weight, and direct selection of these traits are reliable for yield improvement in tomato.

Domestic continuously reinforced concrete pavement has been built on a large scale on the Jungbu Expressway, which opened in 1987. Since then, there have been few application due to cost and construction difficulty. Currently, most of the expressway concrete pavements have been applied with jointed plain concrete pavement, but the interest in continuously reinforced concrete pavement has been increasing recently due to frequent premature failure in joints of JPCP. Accordingly, Korea Expressway Corporation has established design guidelines and details for continuously reinforced concrete pavements for expressway in 2014, based on the design method applied to the Jungbu Expressway, but incorporating foreign useful design methods. In terms of construction, pilot constructions were performed on Pyeongtaek~Jecheon Expressway Construction. The new design guidelines were applied to some sections of the Sangju~Yeongdeok Expressway Construction Project in 2016. This study conducted a survey and analysis of transverse cracks for one year after continuously reinforced concrete pavement construction in Sangju~Yeongdeok Expressway. This route was constructed with pavement thickness, base layer and longitudinal reinforcement according to domestic design guidelines. However, the transverse reinforcement was arranged differently according to the section. After construction, the transverse crack spacing was surveyed and the crack gauges were installed at the crack position to measure the movement. This compares the crack spacing according to the characteristics of longitudinal reinforcement and observes continuous movement of the crack width. The results showed that the crack spacing was more affected by the climate at the time of construction than the arrangement method of the transverse reinforcement. The crack width showed periodic changes according to the temperature change over 24 hours. However, due to seasonal changes, it showed a tendency of gradual increasing or decreasing in crack widths, and it was predicted that different measurement results will be shown depending on the time of crack width measurement. Generally, it is predicted that the crack spacing will be narrowed and the crack movement will tend to converge with the period after construction. This initial crack movement data is expected to be useful for comparing whether these predictions are valid.