The impact of supplemental UV-B radiation on growth and biochemical constituents in Vigna unguiculata L. Walp and Pisum sativum L.

S. Ven Vanitha Jenishree, A. Doss, N. Ahamed Kabir
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Abstract

This study investigates the impact of UV-B radiation on plant growth and biochemical constituents in Vigna unguiculata and Pisum sativum plants grown from non-irradiated and UV-B-irradiated seeds. The results show that plants grown from UV-B-irradiated seeds for 30, 60, and 90 minutes experienced significant reductions in plant height, root length, and shoot length compared to non-irradiated seeds. Additionally, plants with UV-B-irradiated seeds had less fresh and dry weight. The decline was particularly pronounced in plants exposed to UV-B radiation for 90 minutes. Chlorophyll a, b, and total chlorophyll (a+b) dropped significantly in plants grown from seeds exposed to UV-B radiation for 30, 60, and 90 minutes. The reduction was particularly significant in plants exposed to UV-B radiation for 90 minutes. Moreover, plants with higher levels of total free phenolics and tannins had higher contents compared to non-irradiated seeds. The level of total free phenols is higher in irradiated seeds of P. sativum than V. unguiculata. The plants exposed to UV-B radiation for 90 minutes showed a noticeable increase.
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补充紫外线-B 辐射对 Vigna unguiculata L. Walp 和 Pisum sativum L. 的生长和生化成分的影响
本研究调查了紫外线-B 辐射对未受辐射种子和受紫外线-B 辐射种子培育的 Vigna unguiculata 和 Pisum sativum 植物生长和生化成分的影响。结果表明,与未经过紫外线-B 照射的种子相比,经过紫外线-B 照射 30 分钟、60 分钟和 90 分钟的种子培育出的植株在株高、根长和芽长方面都有显著下降。此外,使用紫外线-B 照射种子培育的植物的鲜重和干重都有所减少。在紫外线-B 辐射 90 分钟的植物中,这种下降尤为明显。叶绿素 a、b 和总叶绿素(a+b)在经紫外线-B 辐射 30、60 和 90 分钟的种子培育出的植物中显著下降。在紫外线-B 辐射 90 分钟的植物中,叶绿素 a、b 和总叶绿素(a+b)的下降尤为明显。此外,与未经过辐照的种子相比,总游离酚和单宁含量较高的植株具有更高的含量。经辐照的 P. sativum 种子中总游离酚的含量高于 V. unguiculata。接受紫外线-B 辐射 90 分钟的植株的游离酚含量明显增加。
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