Document Type : Research Paper
Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China.
Southern University Agricultural Research and Extension Center, Baton Rouge, LA 70813, USA.
Southern University Agricultural Research and Extension Center, Baton Rouge, LA 70813, USA
UV-B radiation affects crop plants. Growing interest has been shown in studying the effects
of UV-B radiation exclusion on crops since 1993. This article summarized the general
consequences of UV-B radiation exclusion on crop plants from the aspacts of plant morphology,
growth and development. UV-B exlusion has promoting effects on plant height, internode
and leaf size. UV-B exclusion increases root biomass and stimulates nodulation of legume
crops with increased number and size of nodules and enhances the leghemoglobin. Higher
levels of α-tocopherol is found in UV-B plants, which plays an important role in translocating
photoassimilates from the leaves to the roots. UV-B exclusion could be a useful tool for
physiologists and molecular biologists to further address mechanisms involved in UV-B
radiation damage in crop plants.