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Disruption of genetic identity for genebank maize accessions during conservation

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2017
656.pdf (502.1Kb)
Authors
Babić, Vojka
Anđelković, Violeta
Nikolić, Ana
Milivojević, Marija
Srdić, Jelena
Popović, Aleksandar
Kravić, Natalija
Article (Published version)
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Abstract
Maintenance of the original accessions identity and integrity is one of the priorities among genebank activities. Different factors related to conservation may result in accessions disruption. Regeneration is the most frequent critical point in this process, due to bottlenecks, inbreeding, random genetic drift and unintentional mixing or contamination. On the other hand, genetic drift may occur due to seed viability loss. Therefore, it is very important to establish the balance between the frequency of regeneration and the duration of accession conservation. The aim of the present study was to estimate whether the identity of accessions regenerated after 27 years of medium-term conservation was disrupted. Phenotypic markers were applied on three Maize Research Institute "Zemun Polje" (MRIZP) genebank maize landraces (K2026, K768 and K86), differing in seed viability, kernel type and effective population size. It was estimated that, after the regeneration, there had been no significant ...changes in the landrace K2026. There were some parameters indicating that genetic drift had occurred in the landrace K768, and that there had been even a certain degree of inbreeding in the landrace K86. According to the results, accession K2026 could still be kept under the same ID number. Due to the genuine identity disruption, assignment of new ID numbers for K768 and K86 should be suggested.

Keywords:
landraces / phenotypic markers / regeneration / viability / Zea mays L.
Source:
Genetika, 2017, 49, 3, 853-864
Publisher:
  • Društvo genetičara Srbije, Beograd
Funding / projects:
  • Exploitation of maize diversity to improve grain quality and drought tolerance (RS-31028)

DOI: 10.2298/GENSR1703853B

ISSN: 0534-0012

WoS: 000423604800009

Scopus: 2-s2.0-85042112057
[ Google Scholar ]
URI
http://rik.mrizp.rs/handle/123456789/658
Collections
  • Радови истраживача / Researchers' publications
Institution/Community
MRIZP
TY  - JOUR
AU  - Babić, Vojka
AU  - Anđelković, Violeta
AU  - Nikolić, Ana
AU  - Milivojević, Marija
AU  - Srdić, Jelena
AU  - Popović, Aleksandar
AU  - Kravić, Natalija
PY  - 2017
UR  - http://rik.mrizp.rs/handle/123456789/658
AB  - Maintenance of the original accessions identity and integrity is one of the priorities among genebank activities. Different factors related to conservation may result in accessions disruption. Regeneration is the most frequent critical point in this process, due to bottlenecks, inbreeding, random genetic drift and unintentional mixing or contamination. On the other hand, genetic drift may occur due to seed viability loss. Therefore, it is very important to establish the balance between the frequency of regeneration and the duration of accession conservation. The aim of the present study was to estimate whether the identity of accessions regenerated after 27 years of medium-term conservation was disrupted. Phenotypic markers were applied on three Maize Research Institute "Zemun Polje" (MRIZP) genebank maize landraces (K2026, K768 and K86), differing in seed viability, kernel type and effective population size. It was estimated that, after the regeneration, there had been no significant changes in the landrace K2026. There were some parameters indicating that genetic drift had occurred in the landrace K768, and that there had been even a certain degree of inbreeding in the landrace K86. According to the results, accession K2026 could still be kept under the same ID number. Due to the genuine identity disruption, assignment of new ID numbers for K768 and K86 should be suggested.
PB  - Društvo genetičara Srbije, Beograd
T2  - Genetika
T1  - Disruption of genetic identity for genebank maize accessions during conservation
VL  - 49
IS  - 3
SP  - 853
EP  - 864
DO  - 10.2298/GENSR1703853B
UR  - conv_969
ER  - 
@article{
author = "Babić, Vojka and Anđelković, Violeta and Nikolić, Ana and Milivojević, Marija and Srdić, Jelena and Popović, Aleksandar and Kravić, Natalija",
year = "2017",
abstract = "Maintenance of the original accessions identity and integrity is one of the priorities among genebank activities. Different factors related to conservation may result in accessions disruption. Regeneration is the most frequent critical point in this process, due to bottlenecks, inbreeding, random genetic drift and unintentional mixing or contamination. On the other hand, genetic drift may occur due to seed viability loss. Therefore, it is very important to establish the balance between the frequency of regeneration and the duration of accession conservation. The aim of the present study was to estimate whether the identity of accessions regenerated after 27 years of medium-term conservation was disrupted. Phenotypic markers were applied on three Maize Research Institute "Zemun Polje" (MRIZP) genebank maize landraces (K2026, K768 and K86), differing in seed viability, kernel type and effective population size. It was estimated that, after the regeneration, there had been no significant changes in the landrace K2026. There were some parameters indicating that genetic drift had occurred in the landrace K768, and that there had been even a certain degree of inbreeding in the landrace K86. According to the results, accession K2026 could still be kept under the same ID number. Due to the genuine identity disruption, assignment of new ID numbers for K768 and K86 should be suggested.",
publisher = "Društvo genetičara Srbije, Beograd",
journal = "Genetika",
title = "Disruption of genetic identity for genebank maize accessions during conservation",
volume = "49",
number = "3",
pages = "853-864",
doi = "10.2298/GENSR1703853B",
url = "conv_969"
}
Babić, V., Anđelković, V., Nikolić, A., Milivojević, M., Srdić, J., Popović, A.,& Kravić, N.. (2017). Disruption of genetic identity for genebank maize accessions during conservation. in Genetika
Društvo genetičara Srbije, Beograd., 49(3), 853-864.
https://doi.org/10.2298/GENSR1703853B
conv_969
Babić V, Anđelković V, Nikolić A, Milivojević M, Srdić J, Popović A, Kravić N. Disruption of genetic identity for genebank maize accessions during conservation. in Genetika. 2017;49(3):853-864.
doi:10.2298/GENSR1703853B
conv_969 .
Babić, Vojka, Anđelković, Violeta, Nikolić, Ana, Milivojević, Marija, Srdić, Jelena, Popović, Aleksandar, Kravić, Natalija, "Disruption of genetic identity for genebank maize accessions during conservation" in Genetika, 49, no. 3 (2017):853-864,
https://doi.org/10.2298/GENSR1703853B .,
conv_969 .

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