Gabriel Céccoli , Sergio Andrés Granados Ortiz , Melina Soledad Buttarelli , María Laura Pisarello , Fernando Felipe Muñoz , Lucas Damián Daurelio , Carlos Alberto Bouzo , Elisa Soledad Panigo , Adrián Alejandro Perez
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The present work aimed to study the effects of salinity on achene yield in four sunflower genotypes and their components and on the oil content and quality and their relationships. Four sunflower hybrids (ACA885, TRITON MAX, SRM769 and SRM779) were grown at 130 mM NaCl irrigation solution under controlled environmental conditions. The achene yield, the yield components, and the content and oil quality were determined. Based on the four studied genotypes, salinity decreased achene yield by 75.1 %. SRM779CL had a lower achene yield reduction by salinity. Yield component that most explained this tolerance was the number of achenes per plant. SRM779CL was the hybrid with the highest oil percentage loss. Contrarily, salinity increased the oil content in ACA885. Salinity decreased the ratio between oleic (18:1) and linoleic acid (18:2) in all genotypes. Therefore, salt stress increased the percentage of unsaturations in the four genotypes examined in this work. 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引用次数: 2
摘要
全球约有8亿公顷土地受到盐碱化影响。这种非生物胁迫导致植物生长抑制,破坏植物细胞的生理过程,并导致许多作物减产。向日葵是全球产量第三大的油籽作物,它被认为是适度耐盐的。目前关于向日葵对盐胁迫的基因型变异,特别是盐胁迫下产量、含油量和品质变化的研究较少。本研究旨在研究盐度对4种向日葵基因型瘦果产量及其组成的影响,以及对含油量和品质的影响及其相互关系。以ACA885、TRITON MAX、SRM769和SRM779 4个向日葵杂交种为材料,在130 mM NaCl灌溉条件下生长。测定了瘦果的产率、产率组成、含量和油质。在四种基因型中,盐度降低瘦果产量75.1%。盐度对SRM779CL瘦果产量的影响较小。最能解释这种耐受性的产量成分是每株瘦果的数量。SRM779CL是含油损失率最高的杂交种。相反,盐度增加了ACA885的含油量。盐度降低了所有基因型中油酸(18:1)和亚油酸(18:2)的比值。因此,盐胁迫增加了本研究中检测的四种基因型的不饱和百分比。最后,综合12个测定参数,主成分分析表明,SRM779CL在对照条件下表现最佳,ACA885在盐度条件下表现最佳。
Salinity tolerance determination in four sunflower (Helianthus annuus L.) hybrids using yield parameters and principal components analysis model
Globally, around 800 million hectares are affected by salinity. This abiotic stress causes plant growth inhibition, disruptions in physiological processes in plant cells, and yield losses in many crops. Sunflower is the third-most oilseed crop globally produced, and it is considered moderately tolerant to salinity. There are few studies about the genotypic variability existing in sunflower for responses to salinity, especially the changes in yield and oil content and quality under salinity. The present work aimed to study the effects of salinity on achene yield in four sunflower genotypes and their components and on the oil content and quality and their relationships. Four sunflower hybrids (ACA885, TRITON MAX, SRM769 and SRM779) were grown at 130 mM NaCl irrigation solution under controlled environmental conditions. The achene yield, the yield components, and the content and oil quality were determined. Based on the four studied genotypes, salinity decreased achene yield by 75.1 %. SRM779CL had a lower achene yield reduction by salinity. Yield component that most explained this tolerance was the number of achenes per plant. SRM779CL was the hybrid with the highest oil percentage loss. Contrarily, salinity increased the oil content in ACA885. Salinity decreased the ratio between oleic (18:1) and linoleic acid (18:2) in all genotypes. Therefore, salt stress increased the percentage of unsaturations in the four genotypes examined in this work. Finally, considering the 12 parameters measured, principal components analysis could determine that SRM779CL showed the best performance under control conditions while ACA885 was the most tolerant under salinity.
期刊介绍:
Annals of Agricultural Sciences (AOAS) is the official journal of Faculty of Agriculture, Ain Shams University. AOAS is an open access peer-reviewed journal publishing original research articles and review articles on experimental and modelling research at laboratory, field, farm, landscape, and industrial levels. AOAS aims to maximize the quality of the agricultural sector across the globe with emphasis on the Arabian countries by focusing on publishing the high-quality applicable researches, in addition to the new methods and frontiers leading to maximizing the quality and quantity of both plant and animal yield and final products.