割伤期和种子浸泡期是否能促进黄膜菊幼苗的最大活力?

IF 1.1 4区 农林科学 Q3 AGRONOMY
O. J. Smiderle, A. G. Souza
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引用次数: 5

摘要

摘要:以出苗量和幼苗活力为目标,通过电导率试验和浸水时间,建立一种测定土耳草(Hymenaea coubaril L.)小种子和大种子生理活力的方法。设计完全随机化,采用2 × 2 × 5的因子方案(两类种子质量,未干结种子和干结种子,5个浸水期),10个重复,每个重复10个种子。评价的变量为电导率(μS cm-1.g-1)、出苗速度(指数)、出苗率(%)和平均出苗时间(天),通过逐日计数得到,直至数值稳定。将大粒种子划伤并在水中浸泡6小时,可获得最大活力的羊膜草幼苗。大种子中18.7%的含水量可促进100%的幼苗生长。小粒种子和大粒种子浸泡6 h后,未脱水和脱水的种子平均出苗时间较短。水含量为20.6%的小种子可促进100%出苗。采用电导率法测定羊膜草种子活力,结果得出速度快,操作简便。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Do scarification and seed soaking periods promote maximum vigor in seedlings of Hymenaea courbaril?
Abstract: The aim of this study was to establish a methodology to determine physiological vigor in small and large seeds of Hymenaea courbaril L. non-scarified seeds and scarified by the electrical conductivity test and period of seed soaking in water aiming at maximum capacity of emergence and seedling vigor. The design was completely randomized, in a 2 x 2 x 5 factorial scheme (two classes of seed mass, non-scarified seeds and scarified and five periods of soaking in water), with 10 replicates of 10 seeds each. The variables evaluated were electrical conductivity (μS cm-1.g-1), emergence speed (index), seedling emergence (%) and mean time of emergence (days), obtained by means of daily counts until stabilization in the values. Maximum vigor of Hymenaea courbaril seedlings is obtained with large seeds subjected to scarification and soaked in water for six hours. Water content of 18.7% in large seeds of Hymenaea courbaril scarified promotes the production of 100% of vigorous seedlings. Small and large seeds of Hymenaea courbaril non-scarified seeds and scarified, soaked for six hours, had shorter mean time for seedling emergence. Water content of 20.6% in small seeds of Hymenaea courbaril scarified promotes 100% seedling emergence. The electrical conductivity test applied to Hymenaea courbaril seeds can be adopted to determine seed vigor, showing speed in the obtaining of results and ease of execution.
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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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