Resposta fisiológica de sementes de chia e linhaça ao estresse hídrico

IF 0.4 4区生物学 Q4 Agricultural and Biological Sciences

Iheringia Serie Botanica Pub Date : 2017-09-29 DOI:10.21826/2446-8231201772202

Raquel Stefanello, B. B. Viana, L. Neves

引用次数: 3

Abstract

Studies on water resources are important to understand seed germination. The objective of this study was to evaluate the physiological (germination) response of chia seeds and linseed to water stress. The seeds were placed on paper soaked in solutions of polyethylene glycol in diff erent osmotic potentials. Percentage of germination, fi rst germination count, and germination speed index were evaluated. The reduction of the osmotic potential of the substrate promoted a signifi cant decrease in the germination and vigor of the chia seeds and linseed. In conclusion, seeds of these species are not able to tolerate osmotic potentials equal to or lower than -0.15MPa, being making possible its cultivation areas with concentrations above osmotic potentials.

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奇亚籽和亚麻籽对水分胁迫的生理反应

水资源的研究对了解种子萌发具有重要意义。本研究的目的是评价奇亚籽和亚麻籽对水分胁迫的生理(萌发)反应。将种子放在浸在不同渗透电位的聚乙二醇溶液中的纸上。测定发芽率、首次萌发数和萌发速度指数。基质渗透势的降低使奇亚籽和亚麻籽的发芽率和活力显著降低。综上所述，这些品种的种子不能耐受等于或低于-0.15MPa的渗透势，从而使其种植区域的浓度高于渗透势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Iheringia Serie Botanica PLANT SCIENCES-

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Iheringia, Série Botânica is a publication edited by the Museu de Ciências Naturais, Fundação Zoobotânica do Rio Grande do Sul, since 1958. The name Iheringia is actually a tribute to Hermann von Ihering (a German researcher who became a Brazilian citizen) and his important studies in the Natural Sciences.The journal has the mission of publishing articles, reviews and original scientific notes that cover diverse areas in Botany, and may be written in Portuguese, Spanish and English. The journal is widely available in both international and national scientific community. The issues are published and distributed twice a year to 118 national institutions and 152 international institutions. The distribution is either free of charge or by exchange. Impac Factor JCR 2014/2015 = 0.263 Qualis CAPES 2015: B 4 (Biodiversity) B1 (Agricultural Science I) B1 (Environment)