| Wine bamboo, Oxytenanthera braunii Pilger ap. Engler, is an important natural resource in the world. The variation characteristics of the anatomical properties of different ages and positions of culm were studied in terms of vascular bundle morphology, fiber morphology and tissue measurement. Anatomical observations showed that the roots were composed of the epidermis, cortex and vascular cylinder. The rhizome and stem were consisted of the epidermis, cortex, elementary tissue and vascular bundle.This research aimed at the fiber structure of O. braunii at different ages and sections. The purpose was to provide theoretical base for directive breeding method through analyzing fibers' morphological parameters. In conclusion, all indicators showed that O. braunii could be used as a good resource for pulp making. The results showed that plastic film mulching could proceed in time of shoot germination and enhance the shoot quality such as improving absorbability of trace element, increasing content of protein, sugar, coarse fiber and majority of amino acid. Synthetically, short time of plastic film mulching showed one method to provide the necessary soil water and mean temperature and do good for development and soil quality though winter. And also, theoretical support for species protection and rational application was provided through analyzing the nutrient elements and components of stump, culm, branch and leaf. Leaf of Wine bamboo had richer nutrients, so there were good prospects for its development and cultivation as a kind of natural healthy food products.Individual-based model was used to delineate and capture the essence of the shoot growth system well enough addressing specific characteristics of parameters about the system. Results showed that power function could be used to set up the relationship between leaf number and node number, which was the same as branch number after obtruncating. Compensation effect of mother individuals after transplanting was important for wine bamboo adapting to the semi-arid area in southwest china. The quadratic function could be used to express the relationship between the number of residual nodes with branch. The percentage of branch number contributing to the total number of the individual without obtruncating was also shown by the percentage of leaf number. The probability distribution function such as Weibull and Gamma were used to simulate the distribution of branch and leaf number on each culm node after obtruncating and transplanting with stump. Results indicated that distribution curve was successfully simulated. Weibull and Gamma functions gave the best answer compared with normal distribution. So humidity was the main ecological factor influencing the growth of bamboo shoots. Understanding the advantage of plasticity response and its limits is of critical importance for numerous issues in ecology and evolution for O. braunii.Individual physiological response to complex environments was a major factor in the ecological breadth of species. The effects of different fertilizer levels on growth and photosynthetic characteristics of O. braunii were preliminarily explored in order to provide basis for proper application of compound fertilizer for its plantation in southwest china. Results showed that the modules such as leaf, branch and lateral root all behaved correspondingly to fertilizer levels, which were indicated by crown, individual height, basal diameter, diameter of breast height (DBH), maximum leaf length, total leaf area, maximum branch length, maximum length of lateral root, root radius, specific leaf area (SLA) and the modules' biomass respectively. And the semi-destructive method of growth analysis accorded with the research requirements for valuable and endangered species.A series of comparative culm burying and branch cuttage propagation experiments of O. braunii is conducted in different culture substrata and seasons with various portions of shoots. It is concluded that culm burying and branch cuttage can raise the general capability of O. braunii in Southwest China and the most suitable environment for O. braunii planting is in the middle-high mountain area.A high-efficiency in vitro propagation method was developed for O. braunii. Bud from lateral and healthy growing secondary branches was used for explants. The BA/NAA mixture ratio at 4:1 provided the best induction result, which was 81.3±8.2%. The influence of thidiazuron (TDZ) variation on rooting was examined as well.This paper also was to provide the data of transplant and technique of living throw the winter such as plastic film mulching. The results showed that plastic film mulching could provide the necessary water and meanwhile help the root system heal up its wound after being transplanted. Furthermore, plastic film mulching could improve the mean temperature of soil and the number of leaf and branch at the sixth and ninth node. And then, the crown expanded. Straw mulch could also do a certain effect which was inefficient than plastic film mulching. Ammonia-N was unchangeable, and on the contrary, nitrate-N was variable irregularly throw the winter. Plastic film mulching was one of the important techniques in planting O. braunii. |
