[ Objective] The experiment aimed to carry out investigation and analysis on seed traits of white flower Platycodon grandiflorum and purple flower Platycodon grandif/orum. [Method] 13 white flower Plalycodon grandiflo...[ Objective] The experiment aimed to carry out investigation and analysis on seed traits of white flower Platycodon grandiflorum and purple flower Platycodon grandif/orum. [Method] 13 white flower Plalycodon grandiflorumand purple flower Platycodon grandiflorumfrom China and foreign countrias were taken as research objects. Their seed traits such as seed length, seed width, thickness of seed and 1 000-grain weight were comparatively analyzed. [ Result] The average seed length, average seed width, average seed thickness and average 1 000-grain weight of white flower Platycodon grandiflorum were all smaller than these of purple flower Platycodon grandiflorum. The seed length of Korean white flower Platycodon grandiflorum was relatively longer and seed lengths of other white flower Platycodon grandiflorum were all shorter than these of purple flower Platycodon grandiflorum. The seed widths of white flower Platycodon grandiflorum were smaller than these of purple flower P/atycodon grandiflorum, except these of Korean white flower Platycodon grandiflorum, Heilongjiang Ning＇an and South Korean Jiangyuan. The 1 000-grain weights of white flower Platycodon grandiflorum were all smaller than these of purple flower Platycodon grandiflorum, except these of Korean Rajin and Sancheng white flower Platycodon grandiflorum. [ Conclusion] The result of this experiment provided reference for rational utilizations of purple flower Platycodon grandiflorum and white flower Platycodon grandiflorum.展开更多
This study was to understand the physiological changes of four kinds of crop seeds including baby corn, cowpea, radish and rape- seed, under the treatment of ultra-drying. Large amounts of seeds as experimental materi...This study was to understand the physiological changes of four kinds of crop seeds including baby corn, cowpea, radish and rape- seed, under the treatment of ultra-drying. Large amounts of seeds as experimental materials （ 10 kg for each material） were respectively dried to the suitable water content consistent with the ultra-dried seed criterion via heating at 50 ~C; then the physiological indices of these ultra-dried seeds such as water content, seed germination, dehydrogenase activity and SOD activity were measured. The results showed that except cowpea seeds, whose ultra-drying treatment should be controlled between two and four days, other three kinds of seeds were tolerant to high tem- perature and low water content. The ultra-dried seeds assumed similar or even higher activities than CKs, but showed no damage symptom. Our result proves that ultra-drying treatment via heating at 50 ℃ is safe and efficient to experimental seeds.展开更多
As a new fishery mode of low-carbon economy, marine ranching has played an important role in promoting sustainable development of fishery and construction of ocean economic zone in China. Since the year of 2000, envir...As a new fishery mode of low-carbon economy, marine ranching has played an important role in promoting sustainable development of fishery and construction of ocean economic zone in China. Since the year of 2000, environment improvement, stock enhancement and mariculture development have been given very high degree of importance along the coast of Shandong Province of China. Studies and tests on artificial reefs and marine ranching, including effect investigation of artificial reefs set up in Jiaonan coastal areas in 1980s, hydrodynamic characteristics experiment of artificial reef, study on material and configuration of artificial reef models, algae transplantation and seaweed beds construction, stock enhancement and releasing etc., have been carried out in recent years. Furthermore, the Restoration Plan of Fishery Resources of Shandong Province has been implemented since the year of 2005, which greatly boosted the construction of artificial reefs and marine ranching along the coast of Shandong. By June of 2010, the total investment on the construction of artificial reefs and marine ranching is over $77 million USD. One hundred artificial reef districts, with total area about 33,350,000 m2 have been set up. The construction of marine ranching along the coast of Shandong Province has been in certain scale and the economic, social and ecological effects are obvious.展开更多
文摘[ Objective] The experiment aimed to carry out investigation and analysis on seed traits of white flower Platycodon grandiflorum and purple flower Platycodon grandif/orum. [Method] 13 white flower Plalycodon grandiflorumand purple flower Platycodon grandiflorumfrom China and foreign countrias were taken as research objects. Their seed traits such as seed length, seed width, thickness of seed and 1 000-grain weight were comparatively analyzed. [ Result] The average seed length, average seed width, average seed thickness and average 1 000-grain weight of white flower Platycodon grandiflorum were all smaller than these of purple flower Platycodon grandiflorum. The seed length of Korean white flower Platycodon grandiflorum was relatively longer and seed lengths of other white flower Platycodon grandiflorum were all shorter than these of purple flower Platycodon grandiflorum. The seed widths of white flower Platycodon grandiflorum were smaller than these of purple flower P/atycodon grandiflorum, except these of Korean white flower Platycodon grandiflorum, Heilongjiang Ning＇an and South Korean Jiangyuan. The 1 000-grain weights of white flower Platycodon grandiflorum were all smaller than these of purple flower Platycodon grandiflorum, except these of Korean Rajin and Sancheng white flower Platycodon grandiflorum. [ Conclusion] The result of this experiment provided reference for rational utilizations of purple flower Platycodon grandiflorum and white flower Platycodon grandiflorum.
文摘This study was to understand the physiological changes of four kinds of crop seeds including baby corn, cowpea, radish and rape- seed, under the treatment of ultra-drying. Large amounts of seeds as experimental materials （ 10 kg for each material） were respectively dried to the suitable water content consistent with the ultra-dried seed criterion via heating at 50 ~C; then the physiological indices of these ultra-dried seeds such as water content, seed germination, dehydrogenase activity and SOD activity were measured. The results showed that except cowpea seeds, whose ultra-drying treatment should be controlled between two and four days, other three kinds of seeds were tolerant to high tem- perature and low water content. The ultra-dried seeds assumed similar or even higher activities than CKs, but showed no damage symptom. Our result proves that ultra-drying treatment via heating at 50 ℃ is safe and efficient to experimental seeds.
文摘As a new fishery mode of low-carbon economy, marine ranching has played an important role in promoting sustainable development of fishery and construction of ocean economic zone in China. Since the year of 2000, environment improvement, stock enhancement and mariculture development have been given very high degree of importance along the coast of Shandong Province of China. Studies and tests on artificial reefs and marine ranching, including effect investigation of artificial reefs set up in Jiaonan coastal areas in 1980s, hydrodynamic characteristics experiment of artificial reef, study on material and configuration of artificial reef models, algae transplantation and seaweed beds construction, stock enhancement and releasing etc., have been carried out in recent years. Furthermore, the Restoration Plan of Fishery Resources of Shandong Province has been implemented since the year of 2005, which greatly boosted the construction of artificial reefs and marine ranching along the coast of Shandong. By June of 2010, the total investment on the construction of artificial reefs and marine ranching is over $77 million USD. One hundred artificial reef districts, with total area about 33,350,000 m2 have been set up. The construction of marine ranching along the coast of Shandong Province has been in certain scale and the economic, social and ecological effects are obvious.
