Research Progress of Combined Effects of Enhanced UV-B Radiation and Other Factors on Plants Effects of water and phosphorus supply on morphology and structure of special root hairs on nodal roots of wheat (Triticum aestivum L.) Effects of combined pollution of heavy metals on root vitality of wheat seeds Eco-toxicology of heavy metals on the inhibition of seed germination and root elongation of wheat in soils Interactive effects of soil water and fertilizer application on leaf net photosynthetic rate and SPAD readings of Catalpa bungei seedlings