乙醇和激素对湿斑尿藻萌发和种子休眠的生理调节。大草原居民

IF 1.1 4区 农林科学 Q3 AGRONOMY
Rafaela Torquato de Agostini, Fabiana Lima Abrantes, N. B. Machado-Neto, C. C. Custódio
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引用次数: 4

摘要

摘要:种子调节可提高种子萌发均匀性、速度和休眠释放。本研究旨在研究湿斑尿藻的生理条件。Llanero,使用两批休眠种子,通过水,商业生物调节剂(生长素,赤霉素- 0.144 mM和细胞分裂素),赤霉素(0.144和1.44 mM)或5%乙醇的吸胀调节。测定萌发、休眠、SOD活性、MDA和H2O2含量。在这两个批次中,商业生物调节剂对发芽率有积极影响,但不影响活力。在第一种情况下,使用生物调节剂或乙醇的发芽率较高;第二,对照和水分处理的种子萌发率最高。两批未经处理的种子H2O2和蛋白质含量均较高。第一批未处理和乙醇处理种子的丙二醛含量较高。在第二批次中,水分处理的种子含量较高。在两个批次中,生物调节剂条件下的种子均表现出较高的SOD活性。H2O2含量与抗氧化活性有关。不可能确定H2O2作为信号释放发芽的萌发氧化窗口。经任何产品调理后的种子,其生理品质均优于未经调理或经水调理后的种子。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ethanol and hormones in physiological conditioning on germination and seed dormancy of Urochloa humidicola cv. Llanero
Abstract: Seed conditioning improves germination uniformity, speed, and dormancy release. This work aimed the study the physiological conditioning of Urochloa humidicola cv. Llanero, using two lots of dormant seeds conditioned by imbibition with water, commercial bioregulator (auxin, gibberellin - 0.144 mM and cytokinin), gibberellin (0.144 and 1.44 mM) or 5% ethanol. Germination, dormancy, SOD activity, MDA and H2O2 content were evaluated. In both lots, germination percentage was positively influenced by the commercial bioregulator without affecting the viability. In the first, the germination, using a bioregulator or ethanol, was higher; in the second, the highest germination was from the treated seeds concerning the control and water treatment. The unconditioned seeds presented a higher H2O2 and protein content in both lots. The MDA content in the first lot was higher in the non-conditioned seeds and conditioned with ethanol. In the second lot, the water conditioned seeds had higher content. In both lots, the bioregulator conditioned seeds showed higher SOD activity. The H2O2 content was related to antioxidation activation. It was impossible to identify the oxidative window of germination in which H2O2 would be a signal, releasing germination. The conditioning of seeds with any product showed superior physiological quality than the unconditioned or conditioned with water.
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来源期刊
Journal of Seed Science
Journal of Seed Science Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
2.00
自引率
30.00%
发文量
28
审稿时长
12 weeks
期刊介绍: From 2017 the Journal of Seed Science (JSS) will circulate online version only. Original scientific studies and communications, not yet published or submitted to another journal for publication and written in Portuguese or English, will be accepted for publication. For manuscripts submitted in English, the authors should provide an adequated version. The SCIENTIFIC COMMUNICATION is a category of scientific manuscript which describes a technique, an equipment, new species or observations and surveys of limited results. It has the same scientific rigor as the “Scientific Articles” and the same value as a publication. The classification of a manuscript as a SCIENTIFIC COMMUNICATION is based on its content and scientific merit but it can be a preliminary study, simple and not definitive on a certain subject, with publication justified by its uniqueness and contribution to the area. The Editorial Board of the JSS may invite leading authors of recognized reputation to compose specific Review Articles covering topics of their specialization that will convey to the scientific community the state-of-the-art knowledge related to the specific theme.
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