Solution culture experiments were carried out to study the NO3- uptake kinetics by rice roots andthe nitrate reductase activity (NRA) in leaves of four typical
a-carotene, β-carotene, lycopene, β-cryptoxanthin, zeaxanthin and lutein content of fruits in53 citrus cultivars were determined using HPLC. In both peel and
Current researches on the nutritive characteristics of fibrous feedstuff through determining thefeedstuff cation exchange capacity (CEC) to evaluate its nutriti