Amelioration of Salinity Tolerance in Foxtail Millet by Applying Plant Growth Regulators

D. Biswas, M. Mannan, M. Karim, M. Miah
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引用次数: 1

Abstract

A pot experiment was laid down at the Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur from November 2018 to March 2019 to improving the salinity tolerance in Foxtail millet (BARI Kaon 1) using different plant growth regulators with different doses. Two salinity levels, i) control (0mM NaCl) and ii) 80 mMNaCl were maintained after 14 days of sowing to harvest. The plant growth regulators i) Humic acid (HA): a) @ 5 gL-1 water b) @ 10 gL−1water ii) Gibberellic acid (GA3): a) @10 g L-1water b) @20 g L-1water iii) Salicylic acid (SA): a) @ 50 g L-1water b) @ 100 g L-1water were sprayed at 7 days interval from salt imposition. The experiment was in a completely randomized design (CRD) with three replications. Results revealed that plant growth regulators improved the growth and yield performance of Foxtail millet under both control and saline conditions. Amelioration of salinity tolerance in Foxtail millet was well associated with lower proline content, higher chlorophyll content and SPAD value as well as dry matter production, which facilitated the Foxtail millet yield due to application of plant growth regulators. Among the plant growth regulators, humic acid (HA) @ 5 g L-1 water was the best treatment to improving the salinity tolerance in foxtail millet under saline condition. Bangladesh Agron. J. 2019, 22(2): 25-39
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施用植物生长调节剂改善谷子耐盐性
2018年11月至2019年3月,在加济浦尔Bangabandhu Sheikh Mujibur Rahman农业大学农学系进行了盆栽试验,使用不同剂量的植物生长调节剂提高谷子(BARI Kaon 1)的耐盐性。播种至收获14 d后,维持对照(0mM NaCl)和80 mMNaCl两个盐度水平。植物生长调节剂i)腐植酸(HA): a) @ 5gl -1水b) @ 10gl -1水ii)赤霉素酸(GA3): a) @ 10g l -1水b) @ 20g l -1水iii)水杨酸(SA): a) @ 50g l -1水b) @ 100g l -1水,每隔7天喷洒一次。试验采用完全随机设计(CRD), 3个重复。结果表明,在对照和生理盐水条件下,植物生长调节剂均能提高谷子的生长和产量。谷子耐盐性的改善与降低脯氨酸含量、提高叶绿素含量和SPAD值以及干物质产量密切相关,这是由于植物生长调节剂的应用促进了谷子的产量。在植物生长调节剂中,腐植酸(HA) @ 5 g L-1水是提高谷子耐盐性的最佳处理。孟加拉国阿格龙。[j] . 2019, 22(2): 25-39
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审稿时长
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