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Torres, EAuthor

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April 18, 2022
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Morphological and ecogeographical diversity analysis of maize germplasm in the high altitude Andes region of Ecuador

Publicated to: Plant Genetic Resources-Characterization and Utilization. 19 (3): 183-194 - 2021-06-01 19(3), DOI: 10.1017/S1479262121000125

Authors:

Tapia, Cesar; Torres, Elena; Paredes, Nelly; Parra-Quijano, Mauricio
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Affiliations

Inst Nacl Invest Agr INIAP, Orellana, Ecuador - Author
Inst Nacl Invest Agr INIAP, Quito, Ecuador - Author
Univ Nacl Colombia, Fac Ciencias Agr, Bogota, Colombia - Author
Univ Politecn Madrid, Escuela Tecn Super Ingn Agron Alimentaria & Biosi, Madrid, Spain - Author
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Abstract

The Andean region of Ecuador is the place of origin of many maize landraces grouped into 24 races. Definition of priorities for maize diversity conservation in this region can be supported by the spatial identification of areas with a high eco-geographical and phenotypic diversity. Six hundred thirty-six maize samples were morphologically characterized using 14 descriptors and assigned to a distinctive race. Additionally, sampled farms were characterized by 12 environmental variables. From these data, maps of morphological and eco-geographical diversity were obtained by using techniques to determine eco-geographical and phenotypic distances and applying them to each geographical neighbourhood. The races Patillo Ecuatoriano, Racimo de Uva and Uchima exhibited high intraracial morphological variation, particularly in the shape of the ear, kernel row layout, cob diameter and total kernel number. The highest number of different races was observed in Imbabura, Azuay and Chimborazo provinces. The highest levels of morphological diversity were found in three cells (10 x 10 km), located in Pichincha, Chimborazo and Loja provinces. Two ecological niches, located in Loja province, showed high levels of eco-geographical diversity. A comparison between diversity maps revealed shared hotspots of morphological and eco-geographical diversity in the central and southwest areas of Imbabura province. The Andean highlands of Ecuador are an optimal refuge for the conservation of maize diversity, and the criteria of eco-geographical and morphological diversity and race richness should be considered when defining priority in situ conservation areas.
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Keywords

Agricultural biodiversityDiversity mapsEco-geographical diversityMorphological characterizationOn-farm conservation

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Plant Genetic Resources-Characterization and Utilization due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2021, it was in position , thus managing to position itself as a Q2 (Segundo Cuartil), in the category Agronomy and Crop Science. Notably, the journal is positioned en el Cuartil Q3 for the agency WoS (JCR) in the category Plant Sciences.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-04-27:

  • WoS: 3
  • Scopus: 3
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-27:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 14.

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 28.
  • The number of mentions on the social network Facebook: 1 (Altmetric).
  • The number of mentions on the social network X (formerly Twitter): 26 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/93025/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 38
  • Downloads: 17
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Colombia; Ecuador.

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