Genetic diversity and population structure analysis of avocados (<i>Persea americana</i> Mill.) from Southern Ethiopia and Guatemala using polymorphic simple sequence repeat (SSR) markers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41340%2F24%3A100909" target="_blank" >RIV/60460709:41340/24:100909 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1007/s10722-023-01831-1" target="_blank" >https://doi.org/10.1007/s10722-023-01831-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10722-023-01831-1" target="_blank" >10.1007/s10722-023-01831-1</a>

Result language

angličtina

Original language name

Genetic diversity and population structure analysis of avocados (<i>Persea americana</i> Mill.) from Southern Ethiopia and Guatemala using polymorphic simple sequence repeat (SSR) markers

Original language description

Avocado (Persea americana Mill.) is a fruit tree species that grows in different regions of the world. The edible fruit and other parts of the avocado tree have immense nutritional, oil-bearing, and medicinal value. The plant is native to Guatemala but was introduced to Ethiopia by missionaries in 1939. In southern Ethiopia, where coffee is the main cash crop, it is used as a shade for plants. However, in the past 25 years, many farmers and urban dwellers have begun to use avocados as a valuable source of income. Hence, there is a need for quality avocado trees for commercial purposes. Although there is conjecture about the wide variation in avocados in Ethiopia, the diversity and population structure of this plant has not been described. This study aims to fill this gap by comparing avocado germplasm from Guatemala and Ethiopia. A sample of 298 avocados was collected from three and four populations in Guatemala and Ethiopia, respectively. Population diversity and structure were assessed using 12 simple sequence repeat (SSR) markers. The SSR marker profile detected 112 alleles, with an average of 10.21 per locus and an average PIC value of 0.84. Genetic diversity was high, with an average of 10.2 alleles per locus, a mean Shannon index value of 1.65, and observed and expected heterozygosity of 0.51 and 0.71, respectively. The expected heterozygosity varied between populations and was highest in West Guatemala (0.85) and lowest in Gamo (0.55). An analysis of molecular variance showed that 18% of the genetic variation was between the continents and only 2% among the populations. The pairwise genetic differentiation coefficient (F-ST) indicated high differentiation between populations. The phylogenetic tree, structure, discriminant analysis of the main components, and Nei's genetic distance analysis confirmed three groups of avocados. The Wondo Genet population was more genetically diverse than the populations from the Sidama, Wolaita, and Gamo regions. Furthermore, it revealed little genetic exchange with these populations, unlike the Guatemalan avocado, indicating the presence of unique alleles among avocados in Ethiopia. The landraces from Sidama, Wolaita, and Gamo appeared to have experienced historical drift events.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10611 - Plant sciences, botany

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Genetic Resources and Crop Evolution

ISSN

0925-9864

e-ISSN

0925-9864

Volume of the periodical

71

Issue of the periodical within the volume

OCT 2024

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

16

Pages from-to

3331-3346

UT code for WoS article

001152170900001

EID of the result in the Scopus database

2-s2.0-85182487623