Do polyembryonic seeds of Carapa surinamensis (Meliaceae) have advantages for seedling development?

Author:

FERREIRA Débora Najara de SOUZA1,CAMARGO José Luís Campana1,FERRAZ Isolde Dorothea Kossmann1

Affiliation:

1. Instituto Nacional de Pesquisas da Amazônia, Brazil

Abstract

ABSTRACT Polyembryony is the differentiation and development of multiple embryos in a single seed. This characteristic can provide advantages, as more than one embryo is produced with the same amount of resources, and the probability of establishment of at least one seedling increases. However, sibling seedlings may also increase competition, affecting development and survival. In the present study, the possible advantages and disadvantages of polyembryony were analyzed in the initial establishment of seedlings of Carapa surinamensis (Meliaceae), a tree species that produces monoembryonic or polyembryonic seeds. In this regard, the development of single seedlings was compared with a pair of seedlings emerging from polyembryonic seeds. We compared the development of seedlings attached to or detached from each other and to the seed resources. We observed two levels of competition: (a) for the seed reserves during germination and initial development, as multiple embryos of C. surinamensis share the same reserves, and (b) for external factors, mostly space for root and shoot development, and also for light. Reducing the competition for external factors by separating the siblings was not enough to reduce the effects of competition for seed reserves in the first six months of development. Nevertheless, viable seedlings were produced in all treatments. Thus, depending on sprout management in the nursery, the number of seedlings per seed can be significantly increased by detaching the seedlings, or more vigorous seedlings can be obtained when only one seedling is maintained.

Publisher

FapUNIFESP (SciELO)

Subject

General Agricultural and Biological Sciences

Reference30 articles.

1. Seed quality evaluation by tetrazolium staining during a desiccation study of the recalcitrant seeds of Carapa guianensis Aubl. and Carapa surinamensis Miq. - Meliaceae;Amoêdo S.C.;African Journal of Agricultural Research,2017

2. Histoire des plantes de la Guiane françoise: rangées suivant la méthode sexuelle, avec plusieurs mémoires;Aublet J.B.C.F.,1775

3. Comparison of growth dynamics and wood characteristics of plantation-grown and primary forest Carapa guianensis in Central Amazonia;Bauch J.;IAWA Journal,2000

4. Seeds: Physiology of Development, Germination and Dormancy;Bewley J.D.,2013

5. Does polyembryony confer a competitive advantage to the invasive perennial vine Vincetoxicum rossicum (Apocynaceae)?;Blanchard M.L.;American Journal of Botany,2010

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3