4 results about "Schima superba" patented technology

This invention belongs to the field of plant genetic engineering technology, specifically involving SsuTDX The application of gene promoter methylation in regulating hemicellulose synthesis. This invention discloses... SsuTDX The application of gene promoter methylation in regulating hemicellulose synthesis, among which SsuTDX The promoter methylation region of the gene has a nucleotide sequence as shown in SEQ ID NO.1. SsuTDX High levels of gene promoter methylation inhibit hemicellulose synthesis; SsuTDX Low methylation levels in the gene promoter promote hemicellulose synthesis. Furthermore, methylation in this region affects SsuMYB295 binding, and temperature can positively regulate methylation levels. This invention provides molecular targets and specific methods for precisely regulating hemicellulose synthesis in *Symplocos edulis*, laying the foundation for targeted breeding of long-fiber varieties, genetic improvement, and material optimization, and has significant practical value.

The application discloses a forest management method for improving quality and efficiency of Chinese fir plantations, application and Chinese fir plantations, and the management method for improving quality and efficiency of Chinese fir plantations comprises the following steps: cutting part of trees in the Chinese fir forest, so that the remaining density of the existing stand is 100-1050 trees per hectare; planting valuable and native tree species in the gaps of the stand, and the number of the planted trees is 300-1260 trees per hectare; and the planted tree species are at least three of the following: Phoebe zhennan, Liquidambar formosana, Schima superba, Cinnamomum camphora, Cyclobalanopsis glauca, Taxus wallichiana, Ginkgo biloba, Machilus zuihoensis, Melia azedarach and Sapium rotundifolium. 2 2 2 2 The valuable and native tree species are selected according to the local conditions, and the different-age, multi-layer and mixed stands are cultivated, the valuable timber is reserved, and the management purpose of improving quality and efficiency of the Chinese fir plantations is achieved.​​​

The invention belongs to the technical field of forest ecological restoration, and particularly relates to a pinus khasys low-efficiency forest transformation method based on key tree species regulation and control. According to the method, the key broad-leaved tree species complementary with the ecological niche of the pinus khasys are introduced, the coniferous and broad-leaved mixed forest is constructed, and traditional empirical mixing is broken through based on scientific matching of functional characters of the key tree species; carbon and nitrogen circulation is accelerated through the synergistic effect of centrum and schima, the problem of soil fertility decline of a pinus khasys pure forest is solved, meanwhile, xanthium sibiricum, myrica rubra and the like are introduced to improve soil tree species, and chemical fertilizer dependence is reduced. Furthermore, the forest stand stability, the carbon sequestration capability and the soil fertility are improved by utilizing the system effect between tree species.

The application discloses a large-shoot Schima superba rootstock crown replacement grafting method and relates to the field of forest tree improved variety breeding, and comprises the following steps: S1, determining a trunk cutting position in the range of 0.6 m to 1.4 m from the ground of the selected Schima superba rootstock, transversely cutting the trunk along the position, and forming a cutting section; S2, after the cutting section is smoothly processed, the cutting section surface is sealed by using sealing material; S3, Schima superba improved varieties or superior tree scions are used for grafting near the cutting section of the rootstock after the sealing treatment; and S4, the sprouts germinated on the rootstock are removed after grafting; according to the method, the most suitable trunk cutting height interval of the large-shoot Schima superba rootstock crown replacement grafting is determined as 0.6 m to 1.4 m for the first time, and the quantitative parameter blank of the tree species in the technical link is filled; by adopting the trunk cutting height interval, the grafting survival rate can reach 55% to 68.34%, and the technical problem of low and unstable survival rate caused by the lack of quantitative guidance in the prior art is solved.