Baroniya S S, Jumrani K, Baroniya M, Guruprasad K N, Landi M, Kataria S
SwaTukojirao Pawar Shaskiya Vigyan Mahavidyalaya, Dewas (M.P.), India.
Division of Plant Physiology, Indian Institute of Soybean Research, Indore (M.P.), India.
Photosynthetica. 2022 Dec 21;61(2):203-214. doi: 10.32615/ps.2022.048. eCollection 2023.
In the current study, we used four soybean varieties PK-1029, PK-472, NRC-7, and Hardee to examine the effect of exclusion of solar UV radiation on photosynthetic efficiency and to test possible variety-dependent sensitivity to ambient UV (280-400 nm). Plants that were grown under UV exclusion filters had higher chlorophyll and , efficiencies of PSII and more active reaction centers indicated that PSII were substantially affected by solar UV radiation. The significant increase in net photosynthesis was linked to increased stomatal conductance and lower intercellular concentration of CO in UV-excluded plants. The exclusion of solar UV increased seed mass per plant in all soybean varieties as compared to the control; this indicates that ambient UV exclusions boost photosynthetic efficiency and improve soybean yield. The overall cumulative stress response index of four varieties implies that Hardee and PK-472 were more sensitive whereas NRC-7 and PK-1029 were resistant to ambient UV radiations.
在当前的研究中，我们使用了四个大豆品种PK - 1029、PK - 472、NRC - 7和哈迪（Hardee）来研究排除太阳紫外线辐射对光合效率的影响，并测试对环境紫外线（280 - 400纳米）可能存在的品种依赖性敏感性。在紫外线排除滤光片下生长的植物具有更高的叶绿素含量、PSII效率以及更活跃的反应中心，这表明PSII受到太阳紫外线辐射的显著影响。紫外线排除处理的植物净光合作用显著增加，这与气孔导度增加和细胞间CO浓度降低有关。与对照相比，排除太阳紫外线使所有大豆品种的单株种子质量增加；这表明排除环境紫外线可提高光合效率并增加大豆产量。四个品种的总体累积胁迫响应指数表明，哈迪和PK - 472对环境紫外线更敏感，而NRC - 7和PK - 1029对环境紫外线具有抗性。
