Effects of Extended-duration Row Covers on Muskmelons

Cucurbit crops, especially muskmelon and cucumber, attract cucumber beetles, which vector bacterial wilt, causing significant crop losses. The striped and spotted cucumber beetles are the only reported vectors that transmit bacterial wilt, caused by the bacteria Erwinia trachephila. High beetle densities are associated with high bacterial wilt incidence

Effects of Extended-duration Row Covers on Muskmelons

Cucurbit crops, especially muskmelon and cucumber, attract cucumber beetles, which spread bacterial wilt, causing major crop losses. Striped and spotted cucumber beetles are the only reported insects that transmit bacterial wilt, caused by the bacteria Erwinia trachephila. High beetle densities are associated with high bacterial wilt incidence, which usually occurs during the first stages of plant establishment

Organic Practices for the Production of Muskmelon

Cucurbit crops, especially muskmelon and cucumber, attract cucumber beetles, which vector Erwinia tracheiphila, the causal agent of bacterial wilt. High numbers of overwintering beetles, which often lead to high bacterial wilt incidence, usually occur during the first stages of plant establishment. Growers of organic muskmelon need effective ways to manage the cucumber beetle/bacterial wilt complex, particularly during the highestrisk period early in the season

Evaluation of Solanum species and eggplant cultivated varieties for bacterial wilt resistance

Bacterial wilt caused by Ralstonia solanacearum is one of the major diseases in Solanum species including cultivated Eggplant (Solanum melongena L.). Bacterial wilt (BW) disease management in eggplant is difficult due to high survival rate of pathogen in soil and chemical application is not eco-friendly. The best way to avoid bacterial wilt in eggplant is using disease-resistant varieties. However, only a limited number of bacterial wilt resistant varieties are available and, there is a necessity to identify and/or develop new resistant varieties. In the current study, wild Solanum species, and eggplant cultivated varieties were evaluated against Ralstonia solanacearum, and disease incidence was recorded. The cultivated varieties IIHR-108, Pusa Purple Long and Rampur Local were identified as susceptible, whereas, IIHR-7 and CARI-1 were identified as resistant to bacterial wilt. These resistant wild and cultivated varieties can be used as a root-stock in bacterialwilt disease resistant breeding programmes

Inheritance and identification of SCAR marker linked to bacterial wilt-resistance in eggplant

In the present work, the combinations (F1) were crossed between highly resistant and susceptible to bacterial wilt eggplant parents and its F2, BC1 segregation population plants were inoculated with race1 of Ralstonia solanacearum in greenhouse. In this paper, we reported that the inheritance of bacterial wilt resistance in eggplant was controlled by a single dominant gene showing Mendelian inheritance model. In addition, a 762 bp molecular marker linked to a bacterial wilt-resistant gene of eggplant was screenedby the bulked segregant analysis (BSA) method and sequence characterized amplified region (SCAR) marker linked to bacterial wilt-resistance gene was also obtained. The genetic distance between this marker and the resistance gene is 3.33 c

Protocol for assessing bacterial wilt resistance in greenhouse and field conditions. International cooperators’ guide

This protocol is an updated version of “Assessing potato clone field resistance to bacterial wilt” issued in The International Cooperators’ Guide (CIP 2007). The first edition of the protocol presented a standard procedure for field assessment of resistance to bacterial wilt for documenting levels of resistance of advanced potato germplasm. This second edition has included a standardized procedure for greenhouse screening of potato seedlings for bacterial wilt resistance useful for perform genetic studies, parental selection or identification of new sources of resistance in accessions of wild species propagated or maintained as true see

TUBE GRAFTING REDUCES INCIDENCE AND SEVERITY OF BACTERIAL WILT IN TWO TOMATO CULTIVARS IN ABEOKUTA, NIGERIA

Bacterial wilt, Ralstonia solanacearum, causes severe loss of tomato (Solanum lycopersicum L.) pro-duction in Nigeria. Tube grafting of two tomato cultivars (Beske and UC82-B) on bacterial wilt-resistant tomato landrace rootstock (Tomachiva) was conducted to reduce incidence of bacterial wilt and in-crease the yield in the two cultivars. The experiments were laid in Randomized Complete Block De-sign (RCBD). Percentage incidence and Percentage Severity Index (PSI) of grafted tomato were 0.00% each in the early planting season. Incidence (1.70%) and PSI (1.50%) of grafted tomato were observed in late planting season. Non-grafted tomato had higher significant values of 42.50% and 38.80% in incidence and percentage severity index in late planting season. Grafting on Tomachiva effectively reduced the incidence and severity of bacterial wilt in two cultivars of tomato in southwest Nigeri

Phenotypic Characterization and the Resistance of Local Peanuts From West Nusa Tenggara to Bacterial Wilt Disease [Ralstonia Solanacearum]

West Nusa Tenggara Barat has local peanuts that can be used as a source of germplasm, i.e. Bima, Pelat, and Lombok Utara. The productivity of peanut is greatly influenced by the attack of pests/diseases, like bacterial wilt disease. Bacterial wilt is one of the major diseases that can reduce peanut production up to 60% and one of the control mechanisms that can be used is local varieties that are resistant to bacterial wilt disease. This research aimed to evaluate the resistance of local peanut from West Nusa Tenggara to bacterial wilt disease (Ralstonia solanacearum) and to characterize the phenotype of the peanuts. The field research was conducted in the Genetic Resources Field Collection located in Narmada Experimental Field, on January until April 2016. The research method used was randomized complete block design (RCBD) single factorial with 9 replications, thus totally 27 plots were used. Three varieties of peanuts were evaluated, i.e two local varieties (Pelat Sumbawa and Lokal KLU) and Kelinci variety as control. The results showed that the pods and seeds were the main traits that distinguish Lokal KLU and Pelat varieties. The Lokal KLU had medium size pods with a weight of 100 seeds of 48.96 g, while Pelat and Kelinci had very large pod sizes with a weight of 100 seeds of 42.45 and 32.92 g, respectively, thus they were a potential high yielding plants. Lokal KLU had resistance to bacterial wilt compared to Kelinci that was medium resistant and Pelat that was susceptible to bacterial wilt disease