The Research Of Seed Germination Characteristics And Production Capability For Koeleria Cristata (L.) Pers

In2011-2013, To contact Koeleria cristata (L.) as the research object, the objectives of this study were to confirm the seed germination, sexual reproduction of different age, different fertilizer rate and different moisture. The results revealed that:(1) the difference of seed setting rate among4different populations of K. cristata were not significant, when the mean rate of seed setting of two-year old K. cristata was35.26%. The mean set amount of pure seed of each plant was0.861g/strain. However, The pure seed set amount of K. cristata from Daqing Mountains and Showa grassland were significantly higher than that from Xilin Gol Grassland. The optimum temperature of the germination was25℃, with the highest average germination rate were88.2%. And the rate of seed germination could be reduced significantly under the low temperature. Of the temperature15℃, the rate of seed germination could be significantly increased by20to30%, when the seeds were processed with Gibberellin. The influence of storage period was also significant on the rate of seed germination and seedling survival, of which the newly harvested seeds was the higher than the seeds for long storage period.(2) There were no significant difference among the seed setting rate of four populations, with the mean rate of seed36.5%in2012. When compared each-age plant, the pure seed set amount of three-year and four-year plant were significantly higher than the other two age plant. There were no significant difference among the thousand seed weight of five populations, with The average grain of seed0.138±0.003g in2013. There were significant difference among the Net seed solid volume of five populations,4age groups strong showed the highest, lowest6age, with the Net seed solid volume of seed0.926±0.169g/strain。(3) Deal with1has the highest average rate of29.19%, Deal with3the heaviest kernels per0.181g, Handle2solid net seeds showed the highest0.957g/strain。 Among them, With1,2, and the control group of the plant no significant difference between the seed setting rate, were significantly higher than that of processing3. Treatment3grains significantly higher than1,2, and control, treatment2grains significantly higher than1and control, treatment1and there was no significant difference between control; There were significant difference among the Several different fertilizer treatments, the average net seed solid content was0.714±0.208g/strain.(4) The average rate of for processing B as high as27.58%, Three processing of grain size order to treat treatment C> B> A, there were Significant differences among the three kinds of grains, Net per plant seeds strong to deal with A supreme, that is significantly higher than treatment B and C, Handle the C net per plant seeds strong only account for22.25%of the handling B, Deal with the neat of C is the worst, Deal with A neat the most stable。...