Giller Iu E, Shcherbakova I Iu, Lipkina B I, Karieva F A, Shishkin V A
Kosm Biol Aviakosm Med. 1991 Jul-Aug;25(4):26-9.
In laboratory and field experiments, the effect of medium-wave (290-320 nm) UV-radiation (UV-B) on the build-up of photosynthetic pigments, growth and productivity of higher plants was investigated. It was found that UV-B of 5-9 W/m2 in intensity applied daily (at a daily dose of 15-20 kJ/m2) or singly (at a daily dose of 24 or 36 kJ/m2) inhibited the formation of chloroplast pigments. The pattern and magnitude of changes depended on the plant species and leaf age. The degree of photosynthetic changes and plant resistance to UV-radiation were closely correlated. In field experiments (daily irradiation with 0.6 W/m2 at a dose of 12-13 kJ/m2/day), UV-B suppressed the growth and yield of cotton and soybean plants. This exposure modified chloroplasts of soybean plants and inhibited their growth to a greater extent than that of cotton plants. The factors responsible for the species-related specificity of UV-B resistance of higher plants are discussed and approaches to its evaluation based on the pigment apparatus of photosynthesis are described.
在实验室和田间实验中，研究了中波（290 - 320纳米）紫外线辐射（UV - B）对高等植物光合色素积累、生长和生产力的影响。发现每天施加强度为5 - 9瓦/平方米的UV - B（日剂量为15 - 20千焦/平方米）或单次施加（日剂量为24或36千焦/平方米）会抑制叶绿体色素的形成。变化的模式和幅度取决于植物种类和叶片年龄。光合变化程度与植物对紫外线辐射的抗性密切相关。在田间实验中（每天以0.6瓦/平方米的剂量照射，剂量为12 - 13千焦/平方米/天），UV - B抑制了棉花和大豆植株的生长和产量。这种照射对大豆植株叶绿体产生了影响，并且比棉花植株更强烈地抑制了其生长。讨论了导致高等植物UV - B抗性物种相关特异性的因素，并描述了基于光合作用色素装置对其进行评估的方法。
