Evaluate the sensitivity of rapeseed lodging under low light:A field study on the biomechanics of stem and root lodging in rapeseed (Brassica napus L.)

IF 5.6 1区 农林科学 Q1 AGRONOMY
Yue Hu , Hafiz Hassan Javed , Li Liu , Nadiyah M. Alabdallah , Kamran Ghaffor , Ya-long Liu , Yu-qin Luo , Faiza Gulzar , Xiao Peng , Yong-cheng Wu
{"title":"Evaluate the sensitivity of rapeseed lodging under low light:A field study on the biomechanics of stem and root lodging in rapeseed (Brassica napus L.)","authors":"Yue Hu ,&nbsp;Hafiz Hassan Javed ,&nbsp;Li Liu ,&nbsp;Nadiyah M. Alabdallah ,&nbsp;Kamran Ghaffor ,&nbsp;Ya-long Liu ,&nbsp;Yu-qin Luo ,&nbsp;Faiza Gulzar ,&nbsp;Xiao Peng ,&nbsp;Yong-cheng Wu","doi":"10.1016/j.fcr.2025.109881","DOIUrl":null,"url":null,"abstract":"<div><div>Solar dimming has been increasing and threatening crop production in rapidly developing regions (China). The low light stress caused by reduced radiation affects rapeseed production. Lodging is one of the main causes of yield loss and quality decline in rapeseed. However, few studies have been conducted so far on the mechanisms of shade effects on rapeseed lodging. This study aims to investigate the effects of low light on the lodging resistance, structural and biomechanical characteristics of four rapeseed genotypes and determine which lodging type (stem and root lodging) is more common under low light stress based on actual lodging conditions in the field. Shading net was used to investigate the bending strength of stems and root-related parameters. The results showed that low light significantly reduced stem and root lodging resistance, manifested as a decrease in stem bending strength and root anchoring strength, respectively. low light significantly reduced stem diameter (12.6 %) and second moment of area (37 %). low light also reduced stem anatomical parameters, especially cortical thickness (5.4 %) and lignin area (24.9 %). The significant reduction in root length, root diameter, root depth, root bending strength, and root tip strength leads to a shallower root layer, thereby affecting the root anchoring strength. Differences in root plane coverage area and root-soil cone volume exist between genotypes. low light reduced the safety factor of stem and root, but the decrease in root safety factor was higher. Besides that, lodging ratio data showed that, root lodging is more likely to occur under low light treatment as compared to stem lodging. The results of this study indicate that under low light stress, especially in low light areas, rapeseed genotypes with strong roots and high anchoring strength should be selected to improve lodging resistance.</div></div>","PeriodicalId":12143,"journal":{"name":"Field Crops Research","volume":"327 ","pages":"Article 109881"},"PeriodicalIF":5.6000,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Field Crops Research","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378429025001467","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0

Abstract

Solar dimming has been increasing and threatening crop production in rapidly developing regions (China). The low light stress caused by reduced radiation affects rapeseed production. Lodging is one of the main causes of yield loss and quality decline in rapeseed. However, few studies have been conducted so far on the mechanisms of shade effects on rapeseed lodging. This study aims to investigate the effects of low light on the lodging resistance, structural and biomechanical characteristics of four rapeseed genotypes and determine which lodging type (stem and root lodging) is more common under low light stress based on actual lodging conditions in the field. Shading net was used to investigate the bending strength of stems and root-related parameters. The results showed that low light significantly reduced stem and root lodging resistance, manifested as a decrease in stem bending strength and root anchoring strength, respectively. low light significantly reduced stem diameter (12.6 %) and second moment of area (37 %). low light also reduced stem anatomical parameters, especially cortical thickness (5.4 %) and lignin area (24.9 %). The significant reduction in root length, root diameter, root depth, root bending strength, and root tip strength leads to a shallower root layer, thereby affecting the root anchoring strength. Differences in root plane coverage area and root-soil cone volume exist between genotypes. low light reduced the safety factor of stem and root, but the decrease in root safety factor was higher. Besides that, lodging ratio data showed that, root lodging is more likely to occur under low light treatment as compared to stem lodging. The results of this study indicate that under low light stress, especially in low light areas, rapeseed genotypes with strong roots and high anchoring strength should be selected to improve lodging resistance.
弱光条件下油菜倒伏敏感性评价——油菜茎、根倒伏生物力学的田间研究
在快速发展的地区(中国),太阳变暗现象日益严重,威胁着农作物生产。辐射减弱引起的弱光胁迫影响油菜籽的生产。倒伏是造成油菜籽产量损失和品质下降的主要原因之一。然而,目前对遮荫对油菜倒伏的影响机制的研究还很少。本研究旨在研究弱光对4种基因型油菜抗倒伏性、结构和生物力学特性的影响,并根据田间实际倒伏条件确定弱光胁迫下茎秆倒伏和根茎倒伏更常见。采用遮阳网对茎的抗弯强度和根系相关参数进行了研究。结果表明,弱光显著降低了茎秆和根系的抗倒伏能力,表现为茎秆弯曲强度和根系锚固强度的降低。弱光显著降低了茎径(12.6 %)和二次弯矩面积(37 %)。弱光也降低了茎的解剖参数,尤其是皮质厚度(5.4 %)和木质素面积(24.9 %)。根长、根径、根深、根弯曲强度、根尖强度显著减小,导致根层变浅,从而影响根的锚固强度。不同基因型的根面覆盖面积和根土锥体积存在差异。弱光降低了茎和根的安全系数,但根安全系数的降低幅度较大。此外,倒伏比数据显示,弱光处理下根系倒伏比茎倒伏更容易发生。本研究结果表明,在弱光胁迫下,特别是在弱光地区,应选择根系强、锚定强度高的基因型油菜提高抗倒伏能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Field Crops Research
Field Crops Research 农林科学-农艺学
CiteScore
9.60
自引率
12.10%
发文量
307
审稿时长
46 days
期刊介绍: Field Crops Research is an international journal publishing scientific articles on: √ experimental and modelling research at field, farm and landscape levels on temperate and tropical crops and cropping systems, with a focus on crop ecology and physiology, agronomy, and plant genetics and breeding.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信