Rijk Zwaan Zaadteelt En Zaadhandel B.v.

Johannes Wilhelmus Schut

Cornelis Maria Petrus Van Dun

Robert Helene Ghislain Dirks

Beatrice Ingrid Lindhout

Joyce Sylvia Velterop

Egbert Carolus Johannes Smits

Cornelis Marinus Moor

Willem Van Vliet

Arnaud Paul Pierre Thabuis

Gerardus Maria Lenssen

Johannis Hendrik De Rooij

Cornelis Maria Van Dun

Robert Helene Dirks

Adrianus Martinus Jozeph Ammerlaan

Adrianus Martinus Jozef Ammerlaan

Eric Roland Coppoolse

Leendert Jacobus Woudenberg

Silvester De Nooijer

Jacobus Petrus Cornelis De Wit

Arie Vogelaar

Aad Ammerlaan

Kornelius Reinink

Marc Villevieille

Petrus Lambertus J Egelmeers

Jacobus Petrus De Wit

Petrus Lambertus Egelmeers

Kornelis Reinink

The present invention relates a plant which may comprise a modified F5H gene homolog, wherein said gene homolog may comprise a modification as compared to its corresponding wild type F5H gene homolog, wherein the presence of the modified F5H gene homolog in the plant leads to a reduction of wound-induced surface discoloration in comparison to a plant not comprising the modified F5H gene homolog. The invention also relates to a modified F5H gene homolog that leads to the reduced wound-induced surface discoloration. The invention further relates to use of the gene in breeding and producing plants that show reduced wound-induced surface discoloration.

Plants showing a reduced wound-induced surface discoloration

The present invention relates to plants of the Compositae family exhibiting a reversible genic male sterility trait, characterised in that the genic male sterility may be caused by a reduction or complete absence of endogenous jasmonic acid production, resulting from interference with one or more target genes involved in endogenous jasmonic acid production, selected from the group consisting of lipoxygenase, allene oxide synthase, allene oxide cyclase and 12-oxo-phytodienoic acid-10,11-reductase, or their functional homologues.

Reversible genic male sterility in compositae

The present invention relates to lettuce plants (L.) which may comprise a genetic determinant, which when homozygously present in a seed, provides the seed in an unprimed state with the capability to germinate at a high temperature, which genetic determinant is obtainable from a lettuce plant which may comprise said genetic determinant, representative seed which was deposited with the NCIMB under accession number NCIMB 41914, NCIMB 41915, NCIMB 41916, NCIMB 41917, NCIMB 41918, NCIMB 41919, NCIMB 41922, NCIMB 41923, NCIMB 41926, and NCIMB 42216.

High temperature germinating lettuce seeds

The invention relates to plants and plant parts, in particular lettuce plants (L.), which are resistant to. The invention also relates to seeds of these plants capable of producingresistant plants. The invention further relates to methods for obtaining said plants with altered genotypes and seeds thereof, which are resistant to

R-genes in coupling phase

The present invention relates to plants of the Compositae family exhibiting a reversible genic male sterility trait, characterized in that the genic male sterility is caused by a reduction or complete absence of endogenous jasmonic acid production, resulting from interference with one or more target genes involved in endogenous jasmonic acid production, selected from the group consisting of lipoxygenase, allene oxide synthase, allene oxide cyclase and 12-oxo-phytodienoic acid-10, 11-reductase, or their functional homologues.

The present invention relates to plants of the Compositae family exhibiting a reversible genic male sterility trait, characterized in that the genic male sterility may be caused by a reduction or complete absence of endogenous jasmonic acid production, resulting from interference with one or more target genes involved in endogenous jasmonic acid production, selected from the group consisting of lipoxygenase, allene oxide synthase, allene oxide cyclase and 12-oxo-phytodienoic acid-10,11-reductase, or their functional homologs.

The invention relates to a lettuce plant (L.), which may comprise a genetic determinant, which confers resistance to tomato spotted wilt virus (TSWV) and/or impatiens necrotic spot virus (INSV), and which is as found in plants grown from seeds of which a representative sample was deposited under NCIMB accession number NCIMB. The invention further provides seeds, progeny, propagation material and food products from the plant.

Tomato spotted wilt virus and/or impatiens necrotic spot virus resistance in cultivated lettuce

The present invention relates to lettuce plants (L.) which may comprise a genetic determinant, which when homozygous present in a seed, provides the seed in an unprimed state with the capability to germinate at a high temperature, which genetic determinant is obtainable from a lettuce plant which may comprise said genetic determinant, representative seed which was deposited with the NCIMB under accession number NCIMB 41914, NCIMB 41915, NCIMB 41916, NCIMB 41917, NCIMB 41918, NCIMB 41919, NCIMB 41922, NCIMB 41923, and NCIMB 41926.

The invention relates to a method for testing a plant or plant part for exhibiting a reduced or absent wound-induced surface discoloration as compared to a control plant or plant part, which method comprises providing a plant or plant part that is obtained from a plant population that shows genetic variation, in particular a gene bank; optionally creating a wound surface on the plant or plant part; incubating the plant or plant part or the wound surfaces created thereon to allow for discoloration to occur therein or thereon; observing the discoloration in or on the plants or plant parts; comparing the observed discoloration with the discoloration that is observed in the control plant or plant part to assess whether the plant or plant part shows no discoloration or a discoloration that is reduced as compared to the control plant or plant part; and identifying a plant or plant part that shows no discoloration or a discoloration that is reduced as compared to the control plant or plant part as a plant that harbors the reduced wound-induced surface discoloration trait.

Method for identifying plant material that shows a reduced discolouration, plants thus identified and use of the identified plants for the production of commercial crop plants showing a reduced discolouration

Provided is a method for screening a population of plants for the presence therein of individuals that show a reduced susceptibility to ethylene and physiological disorders, in particular Russet Spotting and Yellowing, as compared to a control plant, wherein a population of seeds is germinated in darkness and in the presence of ethylene to obtain seedlings that, when having a longer hypocotyl as compared to the original ethylene-sensitive control under ethylene, are selected as plants showing a reduced susceptibility to ethylene and physiological disorders, in particular Russet Spotting or Yellowing. Also provided are plants thus selected.

Resistance to physiological disorders in lettuce

Provided is a method for mapping traits in organisms, in particular in plants. The method comprises a) providing a population of SDR-0 organisms, in particular plants, that each arise from one member of a population of unreduced cells resulting from second division restitution, in particular a population of unreduced spores; b) producing SDR-1 progeny populations of each of these SDR-0 organisms; c) phenotyping the SDR-1 progeny populations to identify segregating traits within each SDR-1 progeny population; d) if segregating progeny are present in a SDR-1 progeny population, genotyping the corresponding SDR-0 organism and comparing the genotype thereof with the genotype of the other SDR-0 organisms to identify heterozygous chromosomal regions associated with the occurrence of the segregating trait identified in the SDR-1 progeny population.

Reverse progeny mapping

The present invention relates to a head-forming lettuce plant of the specieshaving red leaves throughout the head, including the heart. The red leaves in the heart are red even in the absence of radiation with wavelengths shorter than 400 nm, wherein the absence of radiation with wavelengths shorter than 400 nm is in the growing environment during the complete period from sowing until observation. The ratio between anthocyanin and chlorophyll is between 4 and 50, preferably between 9 and 27. The invention also relates to progeny of the plant.

Growing community of inventors

Wouw, Netherlands

Johannes Wilhelmus Schut