The Biological Characteristics And The Characteristics Of Seed Polymorphism Of Salicornia Europaea In Ayding Lake

Salicornia europaea is a kind of typical marsh wetland plants in heavy saline, where often Chunqun distribution, according to the report is the most salt tolerance of higher land plants.(1) to study biological characteristics of habitats indicated that: with the increase of soil water, salt angle grass coverage change is not obvious, the kinds and amount of the increase associated with the increase of salt; similarly, coverage change is not obvious, but the accompanying species decrease, reach a certain salt concentration area is formed of pure salt, that group distribution; special water demand is an important factor affecting salt angle grass group properties. The density and plant height growth, root shoot ratio, quality, number of branches, the soil water content was negatively correlated, and positively correlated with soil salt content. Branch number and plant height was positively related to plant height and density had a significant negative correlation, and the density and soil water content was negatively correlated with soil salinity was positively related, indicating more high soil water content, salt content is low population density decreased, single high assembly produced more branches.(2) of abnormal seeds shows that: according to the conclusion of the study can be the salt angle grass populations in Turpan shaped seeds are divided into three types(type A, type B, type C). Atypia salt angle grass seed is reflected in the size, weight, growth location, morphology, water absorption, external appendages on the germination characteristics of seeds. 3 types of seeds by A- B- C sequence, seed size, quality, water imbibitions, germination rate decreases in turn. According to the difference of the diffusion mode, type A seeds have expanded the living space of the meaning, type B seeds as the reserve force, while type C seeds as the staying power to ensure the stability of the number of species. Kinds of Salicornia seed bearing type A seeds are vertical, B, C are inclined to seed.(3) special seed germination studies show that: the results showed that, at the temperature of 25/15 ℃, the highest germination rate of the seed with A, B type, C type seed germination rate was very low, and there is the phenomenon of dormancy. A, B type of seed for planting "offensive", when the temperature is suitable for large, rapid germination; type C seeds as "old-fashioned" seed dormancy phenomenon, has, by external excitation to germination, can substitute caused by outside environment fluctuations deaths as a reserve force.(4) on the reproductive output and distribution of the show: correlation with increase of reproductive allocation in the area of salt angle grass plant biomass is not large, the reproductive allocation of this species is influenced by many factors, such as the genetic control of, not only by the habitat one-sided reason.