| Camellia is an important landscape and oil-pressing plant germ plasm resource with remarkable economic, social and ecological value. This thesis takes camellia crapnelliana and Camellia trichoclada as test materials,investigates their wild ecologicalniche, observes their biological and ecological characteristics, mensurates their cold resistant and characteristics of their reproduction, and ultimately obtains the following results:(1) Ornamental Characteristics: Camellia crapnelliana has relatively large flowers and fruits. The shape of its tree is beautiful, and it has emerald leaves which are green all year round. The florescence is from October to December when it produces large and elegantly white flowers. As an important oil-pressing and ornamental plant it boasts both ornamental flowers and fruits when the fruits mellow in autumn. Camellia trichoclada is luxuriant and emerald with small and dense leaves arranged into two columns. Young leaves are red. The plant blossoms from November to December and produces small and pink flowers. When it blossoms, the whole plant is decorated with tiny flowers and shapes into a flower tree. It becomes extremely beautiful andpectacular.(2) Biodiversity:via the survey to the structure of community and species diversity of Camellia trichoclada in huanglianshanVillage in Taishun of Zhejiang Province, the results indicate that: the community is rich in plant resources, it has vascular plant of 58 families 104 genera and 153 species. According to the Ruankiaer life form statistics, Phanerophytes makes up 85.0%,Chamaephyte 2.6%,Hemicryptophyte 13.1%,geophytes 8.5%,and one-year-plant 0.7%. The structure of community can be categorized into tree layer, shrub layer and field layer. The richness index (S) of tree layer, Simpson index (D) and Shannon-Wiener index (H) are the largest, they are respectively 95,5.5859 and 0.9669.(3) Characteristic of production: Using three different normalities of exogenous hormones(NAA,IBA and NAA+IBA), concentration (500 mg·L-1,1000 mg·L-1,1500 mg·L-1)matrix ratios(Ratios of pelhamite and perlite plaster are 1:1; 2:1; 4:1), time for process(15s, 30s, 60s), and an orthogonal test with three factors and three levels to do cutting trial on camellia crapnelliana, the results show that camellia crapnelliana falls into a synthetically-rooted type of plant which is mainly rooted from caliosity and subsidiarily rooted from bast. In matrix cutting with the ratio of pelhamite and perlite plaster is 1:1, the generation of cutting caliosity and adventitious root are both earlier than other treatments (matrix ratios). Generally, the treatment effect of IBA rooting powder is better than the other two kinds of powder. The better scheme selected by using synthetical method of point rating is: Normality of IBA is 1500 mg·L-1, time for treatment 30 seconds, and using pelhamite and perlite plaster as matrix with the ratio of 1:1.(4) Winter resistance: By low temperature treatment at different temperature (5℃, 0℃, -5℃, -10℃and -15℃), mensurating six indicators (relative conductivity, semilethal temperature, soluble protein, MDA content, SOD cashed, POD cashed) of Camellia crapnelliana and Camellia trichoclada, analyzing their winter resistance and using Camellia semiserrata as a reference, this study obtains the following result: in terms of their winter resistance Camellia crapnelliana > Camellia trichoclada > Camellia semiserrata. |
PDF Full Text Request