cork oak seedling seed storage mechanism and technology research

Title: cork oak seedling seed storage mechanism and technology research

　　Author: Wen Qi

　　Degree-granting units: Beijing Forestry University

　　Keywords: cork oak;; seed;; storage Neodymium Magnets mechanism;; breeding technology

　　Summary:

　　Cork oak is widely distributed in north, northwest, central, southern, southwestern, more than 20 provinces, Qinling Mountains is one of its distribution centers. Because of its strong resistance, adaptability, is the main area of ​​distribution of tree species. In this paper, seed storage problems, the use of the ABA soaking treatment and traditional storage, cold storage and other methods, for seedlings initially slow-growing problem, take a GGR6 soaking, rare earth nitrate soaking, rare earth nitrate fertilizer and other methods, a comprehensive study of the cork oak seed The storage mechanism and nursery technology. Measured during the study of seed storage in physiological and biochemical processes, the annual growth pattern of seedlings, chlorophyll content, root growth and photosynthetic changes in other indicators. Through the analysis reached the following conclusions:

　　Quercus seed moisture content and viability regression equation was Y =- 0.0606X2 +8.5377 X-215.42, Quercus semi-lethal water content of 46.31%, are recalcitrant seeds.

　　Quercus optimal temperature for seed storage 0-2 ℃; ABA can extend the time of seed dormancy, germination delay; reduce seed in soluble sugars, protein consumption; improve protection activity, maintain cell membrane structure, thereby maintaining the stability of seed viability .

　　Quercus best seeding rate of 650kg / mu, autumn mulching can increase seed germination rate and germination; GGR6 can improve seed http://www.everbeenmagnet.com/en/products/110-sintered-neodymium-magnets germination, seedling height, diameter, plant biomass, the best application of the concentration of 30mg / g-40mg / g; nitric acid dilute the solution can increase the cork oak seed germination and promote seedling height, diameter, biomass, leaf area growth, optimization of cork oak root structure and improve the fibrous lateral roots in total root length in the proportion of . Best use of a concentration of 0.15%, the best method for foliar spray application.

　　Degree Year: 2010