Abstract

The effect of priming winter rye (Secale cereale L., var. Pamiat’ Khudoerko) and wheat (Triticum aestivum L., var. Dosconala) seeds with nitrogen oxide (NO) donor sodium nitroprusside (SNP) on their frost resistance was studied. The NO donor at concentrations of 0.1–0.5 mM increased the cold-hardening ability of seedlings of both cereals (6 days at 2–4°С), leading to a significant increase in their survival after freezing at –6 and –8°С. Seed treatment with SNP contributed to an increase in the content of sugars, proline, anthocyanins, and UV-B absorbing flavonoids in cereal seedlings. An increase in the activity of superoxide dismutase and guaiacol peroxidase in them was also detected. After cold hardening, especially after freezing, the content of the lipid peroxidation product malondialdehyde in seedlings grown from seeds primed with SNP was lower than in the corresponding controls. It was concluded that nitrogen oxide enhanced the cold-induced activation of antioxidant and osmoprotective systems of cereals.

中文翻译：

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氮氧化物供体增强了谷物抗氧化和渗透保护系统的冷诱导变化

摘要

冬小麦（Secale graine L.，变种Pamiat'Khudoerko）和小麦（Triticum aestivum）的启动效果L.，变种 研究了Dosconala）种子与氮氧化物（NO）供体硝普钠（SNP）的抗冻性。浓度为0.1–0.5 mM的NO供体提高了两种谷物的幼苗的冷硬化能力（在2–4°С时为6天），导致它们在–6和–8°С冷冻后的存活期显着增加。 。用SNP进行种子处理有助于增加谷物幼苗中糖，脯氨酸，花色苷和吸收UV-B的类黄酮的含量。还检测到它们中超氧化物歧化酶和愈创木酚过氧化物酶的活性增加。冷硬化后，尤其是冷冻后，由SNP引发的种子中生长的幼苗中脂质过氧化产物丙二醛的含量低于相应的对照。