<正>Difficulties the U.S.high-tech industry is now facing may be only temporary but uncertainty over laws and policies could create a setback.The emerging trans
Eucalyptus adult material requires more successive subcultures in the in vitro multiplication phase for increased vigor and cellular activity. This study evalua
Cerrado soils are acidic and nutrient-poor,with high content of solubilized Al 3+.Plants growing in these conditions may display adaptations to cope with high a