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Pollen morphology reveals genetic diversity between some superior sour cherry (Prunus cerasus L.) genotypes; an opportunity for expanding breeding possibilities

Published online by Cambridge University Press:  11 September 2024

Hossein Momeni Open the ORCID record for Hossein Momeni [Opens in a new window] ,
Naser Bouzari Open the ORCID record for Naser Bouzari [Opens in a new window] ,
Mehrshad Zeinalabedini Open the ORCID record for Mehrshad Zeinalabedini [Opens in a new window]  and
Marzieh Ghanbari Jahromi Open the ORCID record for Marzieh Ghanbari Jahromi [Opens in a new window]
Hossein Momeni
Affiliation:
Department of Horticultural Science and Agronomy, Science and Research Branch, Islamic Azad University, Tehran, Iran
Naser Bouzari*
Affiliation:
Horticultural Science Research Institute, Temperate Fruits Research Center, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
Mehrshad Zeinalabedini
Affiliation:
Systems and Synthetic Biology Department, Agricultural Biotechnology Research Institute of Iran (ABRIL) Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
Marzieh Ghanbari Jahromi
Affiliation:
Department of Horticultural Science and Agronomy, Science and Research Branch, Islamic Azad University, Tehran, Iran
*
Corresponding author: Naser Bouzari; Email: [email protected]
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Abstract

Preservation of the genetic diversity of sour cherry in Iran is imperative for the development of improved cultivars tailored to specific ecological conditions. Addressing gaps in research concerning ecological adaptation, resource management and international collaboration related to sour cherry genetic resources in Iran is essential. Bridging these research lacunae can facilitate the implementation of sustainable cultivation practices, optimize production systems and enhance the global utilization of sour cherry genetic diversity. A comprehensive analysis of the morphology and ultrastructure of pollen grains from ten native sour cherry genotypes in Iran was conducted over a two-year period using scanning electron microscopy (SEM). The examination revealed that all pollen grains were unipolar, radially symmetrical and tricolpate. The length and width of pollen grains varied among genotypes, with lengths ranging from 42.17 to 57.57 μm and widths from 20.28 to 28.13 μm. Furthermore, all genotypes exhibited prolate pollen grains, with differing colpus lengths. Examination of pollen exine revealed striate shapes with varying numbers of ridges, ranging from 18.5 to 8.5 furrows per 50 m2. The horizontal area of pollen grains varied from 333.28 to 1491.69 μm. Polar perspective analysis showed considerable variation in the distance between mesocolpium endpoints. Sour cherry displays significant genetic diversity in Iran, and the application of SEM has proven instrumental in characterizing this diversity. This understanding will aid in further breeding research aimed at enhancing sour cherry varieties and their adaptation to specific ecological conditions.

Keywords

electronic scanningexine patterngenetic screeningpollen grain
Type
Research Article
Information
Plant Genetic Resources , Volume 22 , Issue 5 , October 2024 , pp. 310 - 318
Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press on behalf of National Institute of Agricultural Botany

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