The seasonal photosynthetic response of Phyllostachys edulis ’Pachyloen’ to light intensity,CO2 concentration,temperature and humidity were measured with Li-6400P.The main study results were as follows:The seasonal ...The seasonal photosynthetic response of Phyllostachys edulis ’Pachyloen’ to light intensity,CO2 concentration,temperature and humidity were measured with Li-6400P.The main study results were as follows:The seasonal photosynthetic variation tendency of Ph.edulis ’Pachyloen’ to light intensity was summer>autumn>winter>spring for Pmax,spring>autumn>winter>summer for LCP,autumn>summer>winter>spring for LSP,and summer> autumn>winter>spring for AQY.The seasonal photosynthetic variation tendency of Ph.edulis ’Pachyloen’ to CO2 concentration was spring>autumn>summer> winter for LCP and CCP,and summer>autumn> winter>spring for CE.The optimal temperature for photosynthesis of Ph.edulis ’Pachyloen’ ranged from 20 to 30 ℃,equivalent in spring and autumn,higher in summer and lowest in winter.The optimal humidity for photosynthesis of Ph.edulis ’Pachyloen’ ranged from 40% to 65%,its seasonal variation tendency was autumn>summer>winter>spring.As a cultivar of Ph.edulis,the characteristics of photosynthetic responses of Ph.edulis ’Pachyloen’ to environmental factors were similar with Ph.edulis.It indicated their close phylogenetic relationships.展开更多
In Burton Lake (an Antarctic littoral saline lake), as one of the overwinter species, the female Drepanopus bispinosus reach adult form in autumn. and early winter.For the subsequent life period of more than eight mon...In Burton Lake (an Antarctic littoral saline lake), as one of the overwinter species, the female Drepanopus bispinosus reach adult form in autumn. and early winter.For the subsequent life period of more than eight months, the animals experience such changing environment as increasing salinities from approximately 33 (in May) to 39 (in November). There is a considerable difference of salinity tolerance of female adults between summer and winter populations.Winter collected copepods survived lower salinities than summer collected copepods in this experiment. The upward shift in their salinity tolerance range is related to the development of field acclimation to salinity. Respiration rates of the summer animals showed a visible increase over those of winter copepods in simitar salinity and temperature conditions, thus supporting the above conclusion.展开更多
文摘The seasonal photosynthetic response of Phyllostachys edulis ’Pachyloen’ to light intensity,CO2 concentration,temperature and humidity were measured with Li-6400P.The main study results were as follows:The seasonal photosynthetic variation tendency of Ph.edulis ’Pachyloen’ to light intensity was summer>autumn>winter>spring for Pmax,spring>autumn>winter>summer for LCP,autumn>summer>winter>spring for LSP,and summer> autumn>winter>spring for AQY.The seasonal photosynthetic variation tendency of Ph.edulis ’Pachyloen’ to CO2 concentration was spring>autumn>summer> winter for LCP and CCP,and summer>autumn> winter>spring for CE.The optimal temperature for photosynthesis of Ph.edulis ’Pachyloen’ ranged from 20 to 30 ℃,equivalent in spring and autumn,higher in summer and lowest in winter.The optimal humidity for photosynthesis of Ph.edulis ’Pachyloen’ ranged from 40% to 65%,its seasonal variation tendency was autumn>summer>winter>spring.As a cultivar of Ph.edulis,the characteristics of photosynthetic responses of Ph.edulis ’Pachyloen’ to environmental factors were similar with Ph.edulis.It indicated their close phylogenetic relationships.
文摘In Burton Lake (an Antarctic littoral saline lake), as one of the overwinter species, the female Drepanopus bispinosus reach adult form in autumn. and early winter.For the subsequent life period of more than eight months, the animals experience such changing environment as increasing salinities from approximately 33 (in May) to 39 (in November). There is a considerable difference of salinity tolerance of female adults between summer and winter populations.Winter collected copepods survived lower salinities than summer collected copepods in this experiment. The upward shift in their salinity tolerance range is related to the development of field acclimation to salinity. Respiration rates of the summer animals showed a visible increase over those of winter copepods in simitar salinity and temperature conditions, thus supporting the above conclusion.
