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Characterization of Tanzanian Avocado Using Morphological Traits

Juma, Ibrahim and Persson Hovmalm, Helena and Fatih, Moneim and Geleta, Mulatu Dida and Carlsson, Anders S. and Ortiz Rios, Rodomiro Octavio (2020). Characterization of Tanzanian Avocado Using Morphological Traits. Diversity. 12 , 1-22
[Journal article]

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Abstract

Two-hundred and twenty-six old avocado trees (Persea americana Mill) derived from seeds were selected from eight districts of the Mbeya, Njombe and Songwe regions in Tanzania. The tree, leaf, fruit and seed characteristics were studied using the descriptors for avocado (Persea spp.) from the International Plant Genetic Resources Institute. Cross tabulation and Chi-square tests were conducted in order to assess the distribution of traits between districts and altitude ranges. Principle coordinate analysis (PCoA) and hierarchical cluster analysis (HCA) were used to assess variation of traits within and among districts. Various morphological features were observed among the samples which point to the existence of the Mexican, Guatemalan and West Indian avocado races in Tanzania. The biplot from PCoA revealed extensive variation between the sampled trees at the district level but no clear groupings of the samples based on geographic location. Likewise, dendrograms ensuing from the neighbor–joining and Wards methods displayed that the avocado samples from the same district and even region differed considerably. This morphological trait variation suggests high diversity that may help in planning germplasm management and conservation, as well as breeding strategies in the future.

Authors/Creators:Juma, Ibrahim and Persson Hovmalm, Helena and Fatih, Moneim and Geleta, Mulatu Dida and Carlsson, Anders S. and Ortiz Rios, Rodomiro Octavio
Title:Characterization of Tanzanian Avocado Using Morphological Traits
Year of publishing :2020
Volume:12
Page range:1-22
Number of Pages:0
Publisher:MDPI
ISSN:1424-2818
Language:English
Publication Type:Journal article
Refereed:Yes
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 > 401 Agricultural, Forestry and Fisheries > Horticulture
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
Keywords:seedlings, descriptors, diversity, germplasm, multivariate analysis
URN:NBN:urn:nbn:se:slu:epsilon-p-104322
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-104322
Additional ID:
Type of IDID
DOI10.3390/d12020064
ID Code:16661
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:05 Mar 2020 13:29
Metadata Last Modified:05 Mar 2020 13:29

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