Restricted Irrigation Regimes and Rapeseed High-Yielding Genotypes Can Be Applied to Cope With the Water Shortage Crisis and More Stable Oil Production

IF 2.4 3区 农林科学 Q1 AGRONOMY Gesunde Pflanzen Pub Date : 2024-06-26 DOI:10.1007/s10343-024-00995-9
Saber Saif Amiri, Mehrdad Yarnia, Bahram Mirshekari, Farhad Farahvash, Varahram Rashidi
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Abstract

To investigate the quantitative and qualitative yields of different rapeseed genotypes under optimal water supply and restricted irrigation regimes, a split plot experiment was arranged in a randomized complete blocks design with three replicates in the 2018–19 and 2019–20 growing seasons. The Main plots included irrigation regimes at three levels of optimal water supply regime, withholding irrigation from the beginning of flowering, and withholding irrigation from the beginning of silique setting. The sub-plots contained 11 Iranian rapeseed genotypes (Dalgan, Zafar, Sarigol, RGS003, Hyola4815, Hyola401, Zabol10, Jerom, Jerry, Julius, and Jacomo). The highest rapeseed seed yield (3463 kg ha−1), oil content (43.09%), and oil yield (1492 kg ha−1) were obtained from the optimal water supply regime. Drought stress (restricted irrigation from silique setting and flowering stages) decreased seed yield (28 and 49%), oil content (4 and 7%), and oil yield (31 and 52%). Fatty acids compositions of rapeseed genotypes differently responded to drought stress conditions. Restricted irrigation regimes enhanced the linolenic acid, erucic acid, and glucosinolate contents, while the palmitic acid, oleic acid, and linoleic acid content were reduced when the rapeseed plants were subjected to drought stress. Overall, our findings suggest that the Sarigol genotype due to acceptable seed and oil yield as well as high-quality oil under three studied irrigation regimes can be recommended for cultivation in arid and semi-arid regions like Iran.

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限制灌溉制度和油菜籽高产基因型可用于应对缺水危机和更稳定的石油生产
为研究不同油菜基因型在最佳供水和限制灌溉制度下的定量和定性产量,在2018-19和2019-20生长季,采用随机完全区组设计,安排了三个重复的分小区试验。主小区包括三个层次的灌溉制度:最佳供水制度、从开花期开始停止灌溉和从坐果期开始停止灌溉。子小区包括 11 个伊朗油菜基因型(Dalgan、Zafar、Sarigol、RGS003、Hyola4815、Hyola401、Zabol10、Jerom、Jerry、Julius 和 Jacomo)。在最佳供水条件下,油菜籽产量(3463 千克/公顷)、含油量(43.09%)和出油率(1492 千克/公顷)最高。干旱胁迫(在油菜抽薹期和开花期限制灌溉)降低了油菜籽产量(28% 和 49%)、含油量(4% 和 7%)和出油率(31% 和 52%)。油菜籽基因型的脂肪酸组成对干旱胁迫条件的反应不同。当油菜植株受到干旱胁迫时,限制灌溉制度会提高亚麻酸、芥酸和葡萄糖苷酸的含量,而棕榈酸、油酸和亚油酸的含量则会降低。总之,我们的研究结果表明,在所研究的三种灌溉制度下,Sarigol 基因型具有可接受的种子和油产量以及高品质的油,可推荐在伊朗等干旱和半干旱地区种植。
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来源期刊
Gesunde Pflanzen
Gesunde Pflanzen 农林科学-农艺学
CiteScore
3.50
自引率
25.80%
发文量
152
审稿时长
>12 weeks
期刊介绍: Gesunde Pflanzen publiziert praxisbezogene Beiträge zum Pflanzenschutz in Landwirtschaft, Forstwirtschaft, Gartenbau und öffentlichem Grün und seinen Bezügen zum Umwelt- und Verbraucherschutz sowie zu Rechtsfragen. Das Themenspektrum reicht von der Bestimmung der Schadorganismen über Maßnahmen und Verfahren zur Minderung des Befallsrisikos bis hin zur Entwicklung und Anwendung nicht-chemischer und chemischer Bekämpfungsstrategien und -verfahren, aber auch zu Fragen der Auswirkungen des Pflanzenschutzes auf die Umwelt, die Sicherung der Ernährung sowie zu allgemeinen Fragen wie Nutzen und Risiken und zur Entwicklung neuer Technologien. Jedes Heft enthält Originalbeiträge renommierter Wissenschaftler, aktuelle Informationen von Verbänden sowie aus der Industrie, Pressemitteilungen und Personalia. Damit bietet die Zeitschrift vor allem Behörden und Anwendern im Agrarsektor und Verbraucherschutz fundierte Praxisunterstützung auf wissenschaftlichem Niveau.
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