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Comparison of morphological and genetic characteristics of avocados grown in Tanzania

Juma, Ibrahim and Geleta, Mulatu Dida and Persson Hovmalm, Helena and Nyomora, Agnes and Saripella, Ganapathi Varma and Carlsson, Anders S. and Fatih, Moneim and Ortiz Rios, Rodomiro Octavio (2021). Comparison of morphological and genetic characteristics of avocados grown in Tanzania. Genes. 12 , 63
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Abstract

Tanzania has been growing avocado for decades. A wide variability of the avocado germplasm has been found, and the crop is largely contributing to the earnings of the farmers, traders, and the government, but its genetic diversity is scantly investigated. With the purpose of comparing morphological and genetic characteristics of this germplasm and uncovering the correlation between them and the geographical location, 226 adult seedling avocado trees were sampled in southwestern Tanzania. Their morphological characters were recorded, and their genetic diversity was evaluated based on 10 microsatellite loci. Discriminant analysis of principal components showed that the germplasm studied consisted of four genetic clusters that had an overall average gene diversity of 0.59 and 15.9% molecular variation among them. Most of the phenotypes were common in at least two clusters. The genetic clusters were also portrayed by multivariate analysis and hierarchical clustering for the molecular data but not for the morphology data. Using the Mantel test, a weak significant correlation was found between the genetic, morphological, and geographical distances, which indicates that the genetic variation present in the material is weakly reflected by the observed phenotypic variation and that both measures of variation varied slightly with the geographical sampling locations.

Authors/Creators:Juma, Ibrahim and Geleta, Mulatu Dida and Persson Hovmalm, Helena and Nyomora, Agnes and Saripella, Ganapathi Varma and Carlsson, Anders S. and Fatih, Moneim and Ortiz Rios, Rodomiro Octavio
Title:Comparison of morphological and genetic characteristics of avocados grown in Tanzania
Year of publishing :2021
Volume:12
Article number:63
Number of Pages:21
ISSN:2073-4425
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Horticulture
Keywords:correlation, diversity, microsatellite, Persea americana, population structure
URN:NBN:urn:nbn:se:slu:epsilon-p-109448
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-109448
Additional ID:
Type of IDID
DOI10.3390/genes12010063
ID Code:20953
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:07 Jan 2021 13:05
Metadata Last Modified:07 Jan 2021 13:11

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