Ramzani Pia Muhammad Adnan, Shan Lin, Anjum Shazia, Khan Waqas-Ud-Din, Ronggui Hu, Iqbal Muhammad, Virk Zaheer Abbas, Kausar Salma
Cholistan Institute of Desert Studies, The Islamia University of Bahawalpur, 63100, Pakistan.
Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
Plant Physiol Biochem. 2017 Jul;116:127-138. doi: 10.1016/j.plaphy.2017.05.003. Epub 2017 May 10.
Quinoa (Chenopodium quinoa Willd.) is a traditional Andean agronomical resilient seed crop having immense significance in terms of high nutritional qualities and its tolerance against various abiotic stresses. However, finite work has been executed to evaluate the growth, physiological, chemical, biochemical, antioxidant properties, and mineral nutrients bioavailability of quinoa under abiotic stresses. Depending on the consistency in the stability of pH, intended rate of S was selected from four rates (0.1, 0.2, 0.3, 0.4 and 0.5% S) for the acidification of biochar and compost in the presence of Thiobacillus thiooxidans by pH value of 4. All three soils were amended with 1% (w/w) acidified biochar (BC) and compost (CO). Results revealed that selective plant growth, yield, physiological, chemical and biochemical improved significantly by the application of BC in all stressed soils. Antioxidants in quinoa fresh leaves increased in the order of control > CO > BC, while reactive oxygen species decreased in the order of control < CO < BC. A significant reduction in anti-nutrients (phytate and polyphenols) was observed in all stressed soils with the application of BC. Moreover, incorporation of CO and BC reduced the pH of rhizosphere soil by 0.4-1.6 units in all stressed soils, while only BC in bulk soil decreased pH significantly by 0.3 units. These results demonstrate that BC was more effective than CO to enhance the bioavailability, translocation of essential nutrients from the soil to plant and their enhanced bioavailability in the seed.
藜麦（Chenopodium quinoa Willd.）是一种传统的安第斯山地适应性强的种子作物，在高营养价值及其对各种非生物胁迫的耐受性方面具有重要意义。然而，在非生物胁迫下评估藜麦的生长、生理、化学、生化、抗氧化特性以及矿质养分生物有效性的研究工作有限。根据pH稳定性的一致性，在氧化硫硫杆菌存在的情况下，通过将pH值调节至4，从四种硫添加量（0.1%、0.2%、0.3%、0.4%和0.5%）中选择合适的添加量用于生物炭和堆肥的酸化处理。所有三种土壤均添加了1%（w/w）的酸化生物炭（BC）和堆肥（CO）。结果表明，在所有胁迫土壤中施用生物炭显著改善了选择性植物生长、产量、生理、化学和生化指标。藜麦鲜叶中的抗氧化剂含量按对照>CO>BC的顺序增加，而活性氧含量按对照<CO<BC的顺序降低。在所有胁迫土壤中施用生物炭后，抗营养物质（植酸盐和多酚）显著减少。此外，在所有胁迫土壤中，添加CO和BC使根际土壤pH值降低了0.4 - 1.6个单位，而在大田土壤中只有生物炭使pH值显著降低了0.3个单位。这些结果表明，生物炭在提高必需养分从土壤到植物的生物有效性、转运及其在种子中的生物有效性方面比堆肥更有效。
