咪鲜胺在大豆中的应用潜力：提高产量特性和抗旱性。

The application potential of mepiquat chloride in soybean: improvement of yield characteristics and drought resistance.

机构信息

College of Agriculture, Northeast Agricultural University, Harbin, 150030, China.

出版信息

BMC Plant Biol. 2024 Apr 23;24(1):310. doi: 10.1186/s12870-024-05028-1.

DOI:10.1186/s12870-024-05028-1

PMID:38649811

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11036734/

Abstract

BACKGROUND

Drought can result in yield losses, the application of plant growth regulators is an effective measure to improve drought resistance and yield. The objective of the study was to explore the application potential of mepiquat chloride (MC) in regulating soybean yield and drought resistance.

METHODS

In this study, a three-year field experiment was designed and combined with drought experiments to measure the yield of popularized varieties during 2021-2022 and drought-resistant and drought-sensitive varieties were selected, and planted in the field in 2023.

RESULTS

MC increased the yield of HN84 and HN87 for two consecutive years from 2021 to 2022 and improved their physiological characteristics under field conditions. Under M200 treatment, the yield of HN84 increased by 6.93% and 9.46%, and HN87 increased by 11.11% and 15.72%. Different concentrations of MC have different effects on soybeans. The maximum increase of SOD, POD and proline in HN84 under M400 treatment reached 71.92%, 63.26% and 71.54%, respectively; the maximum increase of SOD, POD and proline in HN87 under M200 treatment reached 21.96%, 93.49% and 40.45%, respectively. In 2023, the foliar application of MC improved the physiological characteristics of HN44 and HN65 under drought-stress conditions. On the eighth day of drought treatment, compared to the drought treatment, the leaf and root dry weight of HN44 under M100 treatment increased by 17.91% and 32.76%, respectively; the dry weight of leaves and roots of HN65 increased by 20.74% and 29.29% under M200 treatment, respectively. MC also reduced malondialdehyde (MDA) content, decreased antioxidant enzyme activity and proline content. In addition, different concentrations of MC increased the chlorophyll fluorescence parameters (Fs, Fv/Fm, YII, and SPAD). In the field, the plant height of the two varieties decreased significantly, the yield increased, the number of two-grain and three-grain pods increased, and the stem length at the bottom and middle decreased with MC induction.

CONCLUSIONS

The application of 100-200 mg/L MC effectively improved drought resistance and increased yield. This study provided support for the rational application of MC in soybean production.

摘要

背景

干旱会导致产量损失，应用植物生长调节剂是提高抗旱性和产量的有效措施。本研究旨在探索氯化甲哌𬭩（MC）在调节大豆产量和抗旱性方面的应用潜力。

方法

本研究设计了一个为期三年的田间试验，并结合干旱试验，在 2021-2022 年期间测量了推广品种的产量，选择了抗旱和敏感品种，并于 2023 年在田间种植。

结果

MC 连续两年（2021-2022 年）增加了 HN84 和 HN87 的产量，并改善了田间条件下它们的生理特性。在 M200 处理下，HN84 的产量增加了 6.93%和 9.46%，HN87 的产量增加了 11.11%和 15.72%。不同浓度的 MC 对大豆有不同的影响。在 M400 处理下，HN84 的 SOD、POD 和脯氨酸最大增加分别达到 71.92%、63.26%和 71.54%；在 M200 处理下，HN87 的 SOD、POD 和脯氨酸最大增加分别达到 21.96%、93.49%和 40.45%。2023 年，叶面喷施 MC 改善了 HN44 和 HN65 在干旱胁迫条件下的生理特性。在干旱处理的第 8 天，与干旱处理相比，M100 处理下 HN44 的叶片和根干重分别增加了 17.91%和 32.76%；M200 处理下 HN65 的叶片和根干重分别增加了 20.74%和 29.29%。MC 还降低了丙二醛（MDA）含量，降低了抗氧化酶活性和脯氨酸含量。此外，不同浓度的 MC 增加了叶绿素荧光参数（Fs、Fv/Fm、YII 和 SPAD）。在田间，两种品种的株高明显降低，产量增加，二粒和三粒荚数增加，基部和中部茎长降低，诱导后用 MC。