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Effect of soaking with aluminium on seed germination and seedling physiological properties of buckwheat

机译：铝浸对荞麦种子发芽及幼苗生理特性的影响

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Aluminium toxicity is a serious agricultural problem in acid soils, which make up about 40% of the world's arable land, so the study of plant resistance mechanisms to aluminium toxicity is very necessary. Seed soaking was employed to investigate the effect of aluminium on seed germination and seedling physiological properties of a resistant species of buckwheat. The result indicated that lower concentrations of aluminium (10 mg/L and 100 mg/L) could decrease the membrane permeability (MP) and promoted seed germination. Compared with the control, MP of two buckwheat varieties (Xiaobaihua and Xiqiao No.5) decreased by 6,17%-33.3% and 44.6%-54.8% respectively. The germination index increased 8.6%-13.6% and 2.4%-3.3% respectively. Lower concentrations of aluminium could also reduce the content of malondialdehyde (MDA), free proline (Pro), soluble sugars (SS) and the activity of peroxidase (POD) in buckwheat leaves, decreasing by 1.3%-2.1%, 14.7%-19.9%, 6.0%-16.4%, 6.1%-8.7% respectively in Xiaobaihua, and 6.7%-9.6%, 39.9%, 16.1%-19.0%, 5.4%-7.4% respectively in Xiqiao No.5. A higher concentration (5000 mg/L) had the opposite effect on these physiological indices. The activity of catalase (CAT) in Xiaobaihua was more sensitive to aluminium than that in Xiqiao No.5.
机译：铝的毒性是酸性土壤中的一个严重的农业问题，酸性土壤约占世界耕地的40％，因此研究植物抗铝毒性的机制非常必要。浸种研究了铝对荞麦抗病品种种子萌发和幼苗生理特性的影响。结果表明，较低浓度的铝（10 mg / L和100 mg / L）可以降低膜的通透性（MP）并促进种子发芽。与对照相比，两个荞麦品种（小白花和西qiao5号）的MP分别降低了6.17％-33.3％和44.6％-54.8％。发芽指数分别提高8.6％-13.6％和2.4％-3.3％。较低的铝含量也可以减少荞麦叶片中丙二醛（MDA），游离脯氨酸（Pro），可溶性糖（SS）和过氧化物酶（POD）的含量，分别降低1.3％-2.1％，14.7％-19.9小白花分别为％，6.0％-16.4％，6.1％-8.7％，西qiao五号分别为6.7％-9.6％，39.9％，16.1％-19.0％，5.4％-7.4％。较高的浓度（5000 mg / L）对这些生理指标有相反的影响。小白花中的过氧化氢酶（CAT）活性比西qiao5号对铝更敏感。

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