Further study showed that different cultivars had different resistance to enhanced UV-B irradiation under the adverse circumstances, attributed to its different adaptive abilities and protective mechanisms in different rice genotypes.

• 本研究选用6个对U卜B辐射胁迫抗性有较大差异的水稻品种作亲本，运用双列杂交设计，人工组配一套亲本和F:两个世代的供试材料。 以水稻茎菜数为抗性表现性状，测定在不同环境条件下、不同生长发育阶段亲本及其Fl在UV--B辐射胁迫下的抗性表现。