Effects of Cutting after Grafted on Nutrient Uptake of Nasturtium officinale under Selenium Stress

Abstract

Abstract:To study the effects of cutting after grafted on nutrient uptake of wild vegetables, four rootstocks (Brassica pekinensis, Brassica napus, Raphanus sativus and Rorippa dubia) were used to graft Nasturtium officinale, and then cutting the seedlings of scions and planted in selenium (Se) contaminated soil. The nitrogen (N), phosphorus (P) and potassium (K) uptakes of N. officinale were investigated by the pot experiment. The rootstocks of B. pekinensis, B. napus, R. sativus, and R. dubia improved the N uptake ability of N. officinale in Se-contaminated soil, but reduce K uptake ability of that. The rootstocks of B. pekinensis, B. napus, and R. sativus increased the P contents in shoots of N. officinale, and the rootstock of R. dubia had on significant effects on that. Therefore, the rootstocks of B. pekinensis, B. napus, R. sativus, and R. dubia could significantly affect the N, P, and K uptake of N. officinale cutting seedlings after grafted, and the best rootstock was R. sativus in Se-contaminated soil.