Cucumber plants (Cucumis sativus) exhibiting increased resistance to Cumber Green Mottle Mosaic Virus (CGMMV) are provided, together with methods of producing, identifying, or selecting plants or germplasm with a CGMMV resistance phenotype. Such plants include cucumber plants comprising recombinant chromosomal segments conferring CGMMV resistance. Compositions, including novel polymorphic markers for detecting plants comprising introgressed virus resistance alleles, are further provided.

A tomato plant, harboring a partially dominant resistance gene or genes to tomato brown rugose fruit virus (ToBRFV). Such partially dominant resistance was obtained by crossing and back crossing of nine ToBRFV-resistant wild tomato plant lines, each harboring said partially dominant resistance gene or genes and a ToBRFV-susceptible cultivated Solanum lycopersicum. In addition, genetic markers for partially dominant resistance to tomato brown rugose fruit virus (ToBRFV) where identified and found to be related to chromosome 2, and genetic markers for sensitivity to tomato brown rugose fruit virus (ToBRFV) where identified and found to be related to chromosome 11.

The present invention provides a tomato plant which is resistant to ToBRFV. A Tobamovirus resistant tomato plant of the present invention is with loss of function for a SlTOM1a gene, a SlTOM1c gene, and a SlTOM1d gene.

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.

The present invention relates to a genetic determinant which may comprise at least two copies of a combination of two closely linked RDR1 genes, which two closely linked RDR1 genes are inversely oriented, and which genetic determinant leads to virus resistance when present in a plant. In one embodiment, of the RDR1 genes in the combination is represented by SEQ ID NO: 1 or has at least 70% sequence identity, and one of the RDR1 genes in the combination is represented by SEQ ID NO: 3 or has at least 70% sequence identity; or one of the RDR1 genes in the combination encodes a protein represented by SEQ ID NO: 2 or a protein that has at least 70% sequence identity, and one of the RDR1 genes encodes a protein represented by SEQ ID NO: 4 or a protein that has at least 70% sequence identity.

Tomato plants exhibiting resistance to tomato chlorosis virus and Fusarium oxysporum f. sp. lycopersici race 2 are provided, together with methods of producing, identifying, or selecting plants or germplasm with a tomato chlorosis virus and Fusarium oxysporum f. sp. lycopersici race 2 resistance phenotype and lacking an undesirable cold sensitivity trait. Such plants include tomato plants comprising recombinant genomic regions conferring disease resistance. Compositions, including novel polymorphic markers for detecting plants comprising introgressed disease resistance alleles, are further provided.

The present invention relates to a Lactuca sativa seed designated 41-194 RZ. The present invention also relates to a Lactuca sativa plant produced by growing the 41-194 RZ seed. The invention further relates to methods for producing the lettuce cultivar, represented by lettuce variety 41-194 RZ.

The invention provides a Tomato Leaf Curl New Dehli Virus (ToLCNDV) tolerance or resistant QTL in cucurbit plants and plants comprising the QTL. The invention also provides molecular markers linked to QTL. The invention further provides methods of breeding to produce plants that are resistant to ToLCNDV, and the resistant plants produced by such methods.

The present invention is directed to melon plant and seed, namely of C. melo subsp. melo, which are resistant to ToLCNDV, comprising in their genome introgressed sequences from C. melo subsp. agrestis var. acidulous conferring resistance to said virus, when present homozygously. The introgressed sequences are preferably characterized by defined alleles of SNPs on chromosome 11, inter alia allele A of SNP Melon_sbg_14207_58 (SEQ ID No:9). The introgressed sequences can be chosen from those present in the genome of a plant of ToLR1 accession number NCIMB 42506. The invention is also directed to parts of these resistant plants, as well as progeny, to the use of these plants for introgressing the resistance in another genetic background, as well as to different methods for obtaining resistant melon plants or seeds.

The disclosure provides a loss-of-function gene of eIFiso4E-S. The loss-of-function gene is resistant to tobacco vein banding mosaic virus (TVBMV) and represented by the sequence of SEQ ID NO: 1.