In order to reduce the use of peat resources and realize the sustainable development of tobacco, the pH of distiller s grain substrate was adjusted with humic acid, and the effects of various distiller s grain substra...In order to reduce the use of peat resources and realize the sustainable development of tobacco, the pH of distiller s grain substrate was adjusted with humic acid, and the effects of various distiller s grain substrates on the growth of tobacco seedlings were studied to find out the method of cultivating high-quality tobacco seedlings by using distiller s grain substrate. The results showed that when 60% of humic acid was added to the distiller s grain substrate made from coarse distiller s grains, fine distiller s grains, perlite and vermiculite, both the pH and electrical conductivity decreased significantly and were similar to that of the conventional substrate. Moreover, the emergence rate of tobacco seedlings, the rate of strong tobacco seedlings, leaf number, stem height, root growth and quality of tobacco seedlings were good.展开更多
Application of exogenous double-stranded RNA( dsRNA) for virus resistance in plants represents a very attractive alternative to virus resistant transgenic crops or pesticides targeting virus vectors.However,the instab...Application of exogenous double-stranded RNA( dsRNA) for virus resistance in plants represents a very attractive alternative to virus resistant transgenic crops or pesticides targeting virus vectors.However,the instability of dsRNA is a major challenge as spraying naked dsRNA onto plants provides protection against homologous viruses for only five days.Innovative approaches,such as the use of nanoparticles as carriers of dsRNA for improved stability and sustained release,are emerging as key disruptive technologies.Knowledge about the mechanism of entry,transport and processing of exogenously applied dsRNA in plants is still limited.In addition,cost of dsRNA and regulatory framework are still key influencers towards practical adoption of this technology.展开更多
基金Supported by the Project of Luzhou Company of Sichuan Provincial Tobacco Company"Comprehensive Application of Distillers'Grains on Tobacco"
文摘In order to reduce the use of peat resources and realize the sustainable development of tobacco, the pH of distiller s grain substrate was adjusted with humic acid, and the effects of various distiller s grain substrates on the growth of tobacco seedlings were studied to find out the method of cultivating high-quality tobacco seedlings by using distiller s grain substrate. The results showed that when 60% of humic acid was added to the distiller s grain substrate made from coarse distiller s grains, fine distiller s grains, perlite and vermiculite, both the pH and electrical conductivity decreased significantly and were similar to that of the conventional substrate. Moreover, the emergence rate of tobacco seedlings, the rate of strong tobacco seedlings, leaf number, stem height, root growth and quality of tobacco seedlings were good.
基金supported by Luzhou Branch of Sichuan Tobacco Cooperation
文摘Application of exogenous double-stranded RNA( dsRNA) for virus resistance in plants represents a very attractive alternative to virus resistant transgenic crops or pesticides targeting virus vectors.However,the instability of dsRNA is a major challenge as spraying naked dsRNA onto plants provides protection against homologous viruses for only five days.Innovative approaches,such as the use of nanoparticles as carriers of dsRNA for improved stability and sustained release,are emerging as key disruptive technologies.Knowledge about the mechanism of entry,transport and processing of exogenously applied dsRNA in plants is still limited.In addition,cost of dsRNA and regulatory framework are still key influencers towards practical adoption of this technology.
