2 results about "Larch" patented technology

This utility model discloses a constant temperature and humidity device for germinating larch seeds, relating to the field of seedling equipment technology. The utility model includes an insulated shell, with a storage mechanism fixedly connected to its inner cavity. A humidity-regulating component is fixedly connected to one side of the insulated shell, and a ventilation component is connected to the top of the insulated shell. The storage mechanism includes an inner shell disposed within the inner cavity of the insulated shell. This utility model, through the cooperation of the inner shell and the insulated shell, forms a double-layered insulated space, effectively reducing heat loss and ensuring stable internal temperature. The connecting plate, bracket, and tray design within the inner shell facilitates layered seed placement, not only improving space utilization but also ensuring good air circulation for each layer of seeds. A heater rapidly raises the internal temperature, and a lighting lamp simulates natural light conditions, providing suitable illumination for seed germination and helping to improve germination rate and quality.

This invention discloses a method for multi-gene aggregation breeding of larch and its application in cultivating new larch germplasm, lines, and varieties with excellent performance in terms of biomass, timber properties, and stress resistance. It includes the following steps: construction of a multi-gene aggregation expression backbone vector suitable for larch genetic transformation; cloning of genes regulating target traits such as biomass, timber properties, and stress resistance; construction of the multi-gene aggregation expression vector; larch genetic transformation, screening, and identification; and phenotypic observation and evaluation of the multi-gene-transferred larch materials. Results show that this method can introduce multiple target genes into larch recipient materials through a single genetic transformation, significantly improving the breeding efficiency of obtaining transgenic larch materials with excellent comprehensive traits. This method is of great value in overcoming the breeding bottlenecks of long larch growth cycles and a lack of precise techniques for synergistic improvement of multiple traits, and in the targeted and efficient cultivation of larch materials with excellent comprehensive traits.