In order to provide tobacco resistant to a virus, tobacco in accordance with the present invention is arranged such that: (i) a translation initiation factor eIF(iso)4E protein which is non-functional with respect to a virus is produced or (ii) expression of a translation initiation factor eIF(iso)4E gene is suppressed; and (a) a translation initiation factor eIF4E2 protein, which is non-functional with respect to a virus, is produced or (b) expression of a translation initiation factor eIF4E2 gene is suppressed.

A TMV resistant tobacco plant containing a short N introgressed segment and a method for breeding the same. A homozygous tobacco plant containing an N introgressed segment is hybridized with a tobacco plant of genotype nn to obtain an F1 progeny tobacco plant of genotype Nn. The F1 progeny tobacco plant is hybridized with the tobacco plant of genotype nn, to obtain population materials for screening to obtain the short N introgressed segment. TMV is inoculated at a seedling stage, and Nn genotype plants showing necrotic lesion are obtained by screening the population materials. The Nn genotype plants are genotyped using a molecular marker TN5.51 primer pair and an N gene-specific molecular marker N1N2 at the right end of the N introgressed segment. A plant found to be negative when tested by the TN5.51 primer pair and to be positive when tested by the N1N2 molecular marker is a plant comprising the short N introgressed segment. The size of non-target genomic components deleted from plants containing the short N introgressed segment is estimated using TN5.34 and TN5.20 and TN4.99 primer pairs. The obtained short N introgressed segment is applicable to germplasma innovation and breeding of TMV resistant tobacco. The invention is helps to reduce linkage drag with the N gene.

Present invention relates to a virus resistant solanaceous plant, a solanaceous plant cell, and a method for producing the solanaceous plant, and the solanaceous plant has inhibitory properties against: infection by a virus of genus Begomovirus causing tomato yellow leaf curl symptoms, proliferation of the infected virus, and/or expression of infection symptoms. The present invention provides a solanaceous plant having a mutation in at least one gene selected from a group consisting of translation initiation factor eIF4E gene, receptor-like kinase RLK gene, coatomer complex deltaCOP gene, nuclear shuttle protein interactor NSI gene, and genes homologous thereto. The mutation in such a solanaceous plant either inhibits the expression of the mutated gene or makes a protein encoded by the mutated gene to be non-functional for the virus, and the solanaceous plant has virus resistance against the above-mentioned virus.

A method for breeding new purple-orange Chinese cabbage germplasm crosses the purple head Chinese cabbage inbred line 11S96 as the male parent and the orange Chinese cabbage inbred line 11J11 as the female parent. On the basis of selecting individual plants with good heading property in the F.sub.2 population, molecular markers are used to select individual plants carrying the purple-head gene and the orange gene. Through selfing of individual plants for three consecutive generations, a new Chinese cabbage germplasm with green outer leaves and purple-orange head leaves is bred. This method aggregates the purple-head gene and orange gene which are expressed in the head leaves of Chinese cabbage, creating a new Chinese cabbage germplasm with purple-orange head leaves. It enriches Chinese cabbage breeding materials, lays the foundation for breeding the new purple-orange Chinese cabbage variety, and sets a precedent for the aggregation of the head color traits of Chinese cabbage.

The present invention relates to cultivated watermelon plants comprising CGMMV resistance due to introgression of QTLs from a CGMMV resistant donor of the species Citrullus colocynthis.

The present disclosure provides Capsicum annuum plants exhibiting increased resistance to resistance-breaking cucumber mosaic virus (rbCMV) strains. Such plants comprise novel introgressed genomic regions associated with disease resistance on chromosome 8. In certain aspects, compositions and methods for producing, breeding, identifying, and selecting plants or germplasm with an increased disease resistance phenotype are provided.

According to the disclosure, there is provided a novel lettuce cultivar, designated Stomper. Stomper is described as a vigorous romaine cultivar with added disease resistance. This disclosure thus relates to the seeds of lettuce cultivar Stomper, to the plants of lettuce cultivar Stomper, to plant parts of lettuce cultivar Stomper, to methods for producing a lettuce cultivar by crossing the lettuce cultivar Stomper with another lettuce cultivar, and to methods for producing a lettuce cultivar containing in its genetic material one or more backcross conversion traits or transgenes and to the backcross conversion lettuce plants and plant parts produced by those methods.

A tomato plant or a part thereof is disclosed. The plant expresses a Tm-2.sup.2 protein having an amino acid sequence which renders the plant resistant to tomato brown rugose fruit virus (ToBRFV). Methods of generating same are also disclosed. Products generated therefrom are described.

The invention relates to a Solanum lycopersicum plant that is resistant to ToBRFV, which plant comprises a QTL on chromosome 8 between SEQ ID NO: 1 and 4. The presence of the QTL on chromosome 8 is identified by use of at least one of the markers selected from the group consisting of the SNP presented in SEQ ID NOS: 1 to 42. The QTL is present in the genome of a Solanum lycopersicum plant representative seed of which was deposited with the NCIMB under deposit number NCIMB 43637.

An object of the present invention is to provide a cucumber mosaic virus (CMV)-resistant solanaceous plant. The present invention provides a CMV-resistant solanaceous plant having a mutated eIF4E gene encoding an eIF4E protein nonfunctional for CMV. In addition, the present invention provides a method for producing a CMV-resistant plant, the method comprising mutating an eIF4E gene of a solanaceous plant into a mutated eIF4E gene encoding an eIF4E protein nonfunctional for CMV.