4results about How to "Genetic improvement" patented technology

This invention relates to the fields of molecular markers and animal genetic breeding technology, specifically to a molecular marker located on chromosome 4 of pigs that is associated with body size and carcass traits, and its application. Using the F7 generation of a chimeric family as the research object, this invention employs whole-genome resequencing and GWAS analysis to study and identify the molecular markers located on chromosome 4 of pigs associated with body size and carcass traits. By optimizing the dominant alleles of these molecular markers, the frequency of dominant alleles can be increased generation by generation, enabling rapid and accurate selection of body size and / or carcass traits, accelerating the progress of pig genetic improvement, and thus effectively improving the economic benefits of pig breeding.

The present application discloses a plant pollen exine development related protein OsHIT3, a coding gene and application thereof. The plant pollen exine development related protein OsHIT3 of the present application influences the male gametophyte development process of a plant. Inhibition of the expression of the protein coding gene can lead to abnormal development of the male gametophyte of the plant and affect the formation of grains, so that a transgenic plant with abnormal pollen exine development and a transgenic plant with male sterility can be cultivated. The coding gene of the protein is introduced into a male sterile plant, so that a plant with normal development of male gametophyte can be cultivated. The protein and the coding gene thereof can be applied to genetic improvement of a plant.

The application discloses a rice endosperm development related gene OsTML, a coding protein and application thereof. The gene OsTML is a DNA molecule as described in the following 1), 2), 3) or 4): 1) a DNA molecule shown in SEQ ID NO. 1; 2) a DNA molecule shown in SEQ ID NO. 2; 3) a DNA molecule hybridized with the DNA sequence defined in 1) or 2) under stringent conditions and coding the protein; and 4) a DNA molecule having more than 90% homology with the DNA sequence defined in 1), 2) or 3) and coding a plant endosperm development related protein. The application further provides a protein coded by the gene, the protein affects the development of a plant endosperm, and the coding gene of the protein is introduced into a plant with abnormal endosperm development, so that a transgenic plant with normal endosperm development can be cultivated. The protein and the coding gene thereof can be applied to plant genetic improvement.

This invention discloses a PtoSAUR74 gene related to the adventitious root formation ability of poplar and its applications. The nucleotide sequence of the coding region of the PtoSAUR74 gene disclosed in this invention is shown in SEQ ID NO.1, and the protein sequence is shown in SEQ ID NO.2. Overexpression of the PtoSAUR74 gene in poplar significantly inhibits the length, number, and growth rate of adventitious roots, indicating that the PtoSAUR74 gene is a key regulatory gene affecting the development of adventitious roots in poplar, providing a key target for precise molecular regulation of poplar root growth. This invention also discloses a method for regulating the adventitious root formation ability of poplar. By regulating the expression of the PtoSAUR74 gene, adventitious root formation can be directly inhibited, providing new technical means and theoretical basis for the genetic improvement of poplar.