Study On Salt Tolerance Of Hypnum Plumaeforme

In this study, a large selection of high ornamental value of Hypnum plumaeforme as the research object, its salt tolerance study in order to screen the coastal city of green plant material, and provide scientific basis for the application of bryophytes in the Landscape. In this study, investigating the underlying distribution of Zhejiang coastal city of bryophytes and Hypnum plumaeforme cultivation on nutrient solution for its salt tolerance were studied to detect the physiological and biochemical indicators, the main conclusions of this experiment were as follows:(1) Investigation of three county-level cities in Zhejiang coastal bryophytes, results showed that the distribution of bryophytes in the coastal city has certain rules, stronger place for human disturbance, Bryaceae, Pottiaceae of bryophytes compared more.(2) Hypnum plumaeforme hydroponics experiment, respectively, MS, Beneck, modified Knop, White four nutrient solution for Hypnum plumaeforme cultivation, and were set to pH gradient 5.0,6.0,7.0,8.0 of comparative tests, the results showed that the nutrient solution at pH 6.0 Beneck Hypnum plumaeforme growing on the most favorable. Also found that although other pH values with normal growth, but the growth indicators are not as controls.(3) In Hypnum plumaeforme as materials salt experiments, the effects of its treatment 0,10,50,100,200 mM NaCl 0,6,12,18 and 24 days for big gray moss growth, chlorophyll content, MDA aldehyde content, proline content and the protection of enzyme systems. The results showed that when the NaCl concentration is greater than 50 mM, the Hypnum plumaeforme growth was significantly inhibited, chlorophyll content decreased, MDA and proline content is rising, protection activity decreased after the first rise. The longer the treatment time, the greater the harm. And when the NaCl concentration of less than 50 mM, less affected by salt stress. Analysts believe that the Hypnum plumaeforme has some salt tolerance.