4 results about "Genetic linkage" patented technology

The invention relates to the technical field of plant molecular biology, in particular to application of a Unicaulis gene for regulating and controlling growth of tomato axillary buds in tomato breeding. The Uniicaures gene is used for positively regulating and controlling the elongation and growth of lateral branches of tomatoes, and the nucleotide sequence of the Uniicaures gene is as shown in SEQ ID NO. 1; the amino acid sequence of the encoding protein of the Unicaulis gene is as shown in SEQ ID NO. 2. The tomato lateral branch elongation growth gene Unicaulis is positively regulated and controlled by constructing a genetic linkage group, finely positioning and cloning, and by overexpressing the Unicaulis gene in a tomato lateral branch-free plant or increasing the content of the encoding protein of the Unicaulis gene, the accumulation amount of auxin at the axilla part of a transgenic plant is reduced, and the lateral branch of the tomato can normally sprout and obviously grow. The Unicaulis gene or the encoded protein thereof provided by the invention can significantly reduce the accumulation amount of auxin in the axillary part of the tomato plant, relieve the apical dominance of the tomato plant to lateral branches, accelerate the extension and growth of axillary buds of the axillary part of the tomato plant into lateral branches, and provide gene resources and new germplasm for cultivating tomato varieties with strong lateral branches.

The application discloses a molecular marker, a primer combination, a kit and application related to fruit orientation of Chinese pepper. The application successfully locates a key variation site related to fruit orientation of Chinese pepper on the upstream of Up gene by combining comparative genomics and resequencing analysis, designs a molecular marker primer based on the variation site, and verifies that the variation can affect fruit orientation by using a Chinese pepper population. The development and utilization of the molecular marker can precisely identify fruit orientation of Chinese pepper at the seedling stage. Unlike traditional genetic linkage markers, the molecular marker of the application is located on the upstream of the gene, not a linkage marker, and therefore has higher identification effect and accuracy.

The present application is related to markers which have been determined to be genetically linked to a locus which provides resistance to southern leaf blight (SLB). Maize plants comprising newly conferred or increased resistance to SLB, relative to control plants, are also provided herein.

The current disclosure relates to methods and compositions for improving plant varieties through plant breeding and plant genetics. For instance, the disclosure concerns increasing the recombination frequency of a heterozygous trait genetically linked to a second trait within plants. Further, the disclosure concerns breaking the genetic linkage between a first allele and a second allele.