Houttuynia cordata flavonoid and Sophora japonica L. polysaccharide were investigated to develop anti-UV sun-screening agent through UV wavelength scanning spectrum, antioxidant ability and cell viability after UVB ir...Houttuynia cordata flavonoid and Sophora japonica L. polysaccharide were investigated to develop anti-UV sun-screening agent through UV wavelength scanning spectrum, antioxidant ability and cell viability after UVB irradiation. The results showed that the extracts had strong UVA and UVB absorption ability and hydroxyl free radical scavenging ability. The S. japonica L. polysaccharide showed strong anti-UVB irradiation ability according to the cell viability experiment. It suggests that the H. cordata flavonoid and S. japonica L. polysaccharide could be combined as a candidate of anti-UV sun-screening supplement and compensate for the shortcomings of chemical sunscreens against UVA ray.展开更多
In order to maintain higher emergence rate with direct seeding in Shandong rocky mountain, effects of different covering ways on emergence rate of Sophora japonica L. direct seeding were studied. The results showed th...In order to maintain higher emergence rate with direct seeding in Shandong rocky mountain, effects of different covering ways on emergence rate of Sophora japonica L. direct seeding were studied. The results showed that both mulching film and grass cover could effectively increase the moisture content of the soil at the depth of 0-30 cm, contributing to soil moisture conservation and the inhibition of soil evaporation, which created favorable moisture environment for the growth of S. japonica seeds. Both the emergence rate and the seedling height under mulching film had greater improvement and partly enhanced by 26.65% and 6.85 cm respectively, and mulching film also helped S. japonica seeds emerge and ensured the seedling growth. The emergence rate and the seedling height under grass cover had been also raised in some degree, but they were much worse than those under mulching film. The emergence rate and the seedling height under block cover were not significantly increased. So when sowing S. japonica seeds in the spring, mulching film is the best covering way.展开更多
During the past years much progress has been made in the anther culture of woody plants. The potential of using haploid plants and homozygous lines in plant breeding programs has long been recognized, especially in wo...During the past years much progress has been made in the anther culture of woody plants. The potential of using haploid plants and homozygous lines in plant breeding programs has long been recognized, especially in woody plants. However, the conventional method employed by plant breeders for their production is cumbersome, laborious and not very efficient. Using in vitro culture method, haploids can be obtained in a matter of weeks or months, and by doubling their chromosome number homozygous展开更多
基金Supported by College Students'Practice Innovation Training Project in Henan Province(No.201711834006)Henan Provincial Department of Education(No.15A350008)
文摘Houttuynia cordata flavonoid and Sophora japonica L. polysaccharide were investigated to develop anti-UV sun-screening agent through UV wavelength scanning spectrum, antioxidant ability and cell viability after UVB irradiation. The results showed that the extracts had strong UVA and UVB absorption ability and hydroxyl free radical scavenging ability. The S. japonica L. polysaccharide showed strong anti-UVB irradiation ability according to the cell viability experiment. It suggests that the H. cordata flavonoid and S. japonica L. polysaccharide could be combined as a candidate of anti-UV sun-screening supplement and compensate for the shortcomings of chemical sunscreens against UVA ray.
基金subsidized by the project of "Direct seeding afforestation technology and demonstration in barren hills suitable forafforestation" supported by Shandong Forestry Bureau
文摘In order to maintain higher emergence rate with direct seeding in Shandong rocky mountain, effects of different covering ways on emergence rate of Sophora japonica L. direct seeding were studied. The results showed that both mulching film and grass cover could effectively increase the moisture content of the soil at the depth of 0-30 cm, contributing to soil moisture conservation and the inhibition of soil evaporation, which created favorable moisture environment for the growth of S. japonica seeds. Both the emergence rate and the seedling height under mulching film had greater improvement and partly enhanced by 26.65% and 6.85 cm respectively, and mulching film also helped S. japonica seeds emerge and ensured the seedling growth. The emergence rate and the seedling height under grass cover had been also raised in some degree, but they were much worse than those under mulching film. The emergence rate and the seedling height under block cover were not significantly increased. So when sowing S. japonica seeds in the spring, mulching film is the best covering way.
文摘During the past years much progress has been made in the anther culture of woody plants. The potential of using haploid plants and homozygous lines in plant breeding programs has long been recognized, especially in woody plants. However, the conventional method employed by plant breeders for their production is cumbersome, laborious and not very efficient. Using in vitro culture method, haploids can be obtained in a matter of weeks or months, and by doubling their chromosome number homozygous
