Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Preliminary study on Nyssa species introduction in eastern plain of China.

Abstract

Four tree species of the genus Nyssa from southern America were introduced. Of them, N. aquatica and N. sylvatica var. biflora had been planted in plain sites of Zhejiang, Jiangsu, Jiangxi, and Shanghai (China) for 3-4 years. Their morphological characters, growth, adaptability, and waterlogging tolerance were investigated in comparison with N. sinensis, which ranges in the mountain area of southern China. The saplings of the two exotic tree species had good growth in most places and had no frost damage, diseases and insect pests. N. aquatica had better height growth than N. sylvatica var. biflora and N. sinensis. The two foreign species showed high water demand and waterlogging tolerance, thus could be popularized in low, wet plain. The key for their successful culture is to maintain enough water supply, such as to make seeds stratification by sowing, to choose low and wet site for seedling-raising and planting, and to keep from soil aridity.