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Maize seedling performance as a potential index for drought tolerance

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2018
710.pdf (1.363Mb)
Authors
Kravić, Natalija
Babić, Vojka
Srdić, Jelena
Mesarović, Jelena
Anđelković, Violeta
Hadži-Tašković-Šukalović, Vesna
Article (Published version)
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Abstract
Twenty-six maize landraces were tested in order to evaluate maize seedling performance as an index for drought tolerance in adult plants. Samples were subjected to polyethylene glycol-induced osmotic stress at the early seedling stage. Grain yield was obtained in field experiments under well-watered (OC) and a combination of drought and high plant density (HD) conditions. Osmotic stress caused a reduction in seedling growth (length, fresh and dry weight), and increase in the shoot and in particular the root proline contents in the majority of landraces, and variations in root peroxidase (POD) activity. Genotypes displaying more pronounced root growth reduction and higher proline contents exhibited decreased POD activity under osmotic stress. Direct positive correlations between the proline content and growth inhibition, and between the proline and soluble protein content were established. Correlations between the changes in POD activity and growth parameters were significant and positi...ve, and significant but negative with the changes in the proline content. In the field, water stress led to a reduction in grain yield in all of the tested landraces. Correlations between grain yield from both experimental sets (OC and HD) and osmotic-induced changes in seedling root growth were negative, which was opposite to the highly significant and positive correlations between the changes in the seedling root proline content and yield. Also, genotypes with the highest seedling root proline content increase under osmotic stress, exhibited the highest stress tolerance index (STI) based on grain yield achieved under both field conditions. Our results indicate that lower changes in POD activity and especially an increased proline content after exposure to osmotic stress during the early seedling stage could be considered as useful indices to facilitate selection efficiency for drought tolerance in adult plants.

Keywords:
drought / grain yield / POD activity / proline content / Zea mays L.
Source:
Archives of Biological Sciences, 2018, 70, 1, 167-177
Publisher:
  • Srpsko biološko društvo, Beograd, i dr.
Funding / projects:
  • Exploitation of maize diversity to improve grain quality and drought tolerance (RS-31028)

DOI: 10.2298/ABS170504036K

ISSN: 0354-4664

WoS: 000428370100017

Scopus: 2-s2.0-85043708397
[ Google Scholar ]
URI
http://rik.mrizp.rs/handle/123456789/712
Collections
  • Радови истраживача / Researchers' publications
Institution/Community
MRIZP
TY  - JOUR
AU  - Kravić, Natalija
AU  - Babić, Vojka
AU  - Srdić, Jelena
AU  - Mesarović, Jelena
AU  - Anđelković, Violeta
AU  - Hadži-Tašković-Šukalović, Vesna
PY  - 2018
UR  - http://rik.mrizp.rs/handle/123456789/712
AB  - Twenty-six maize landraces were tested in order to evaluate maize seedling performance as an index for drought tolerance in adult plants. Samples were subjected to polyethylene glycol-induced osmotic stress at the early seedling stage. Grain yield was obtained in field experiments under well-watered (OC) and a combination of drought and high plant density (HD) conditions. Osmotic stress caused a reduction in seedling growth (length, fresh and dry weight), and increase in the shoot and in particular the root proline contents in the majority of landraces, and variations in root peroxidase (POD) activity. Genotypes displaying more pronounced root growth reduction and higher proline contents exhibited decreased POD activity under osmotic stress. Direct positive correlations between the proline content and growth inhibition, and between the proline and soluble protein content were established. Correlations between the changes in POD activity and growth parameters were significant and positive, and significant but negative with the changes in the proline content. In the field, water stress led to a reduction in grain yield in all of the tested landraces. Correlations between grain yield from both experimental sets (OC and HD) and osmotic-induced changes in seedling root growth were negative, which was opposite to the highly significant and positive correlations between the changes in the seedling root proline content and yield. Also, genotypes with the highest seedling root proline content increase under osmotic stress, exhibited the highest stress tolerance index (STI) based on grain yield achieved under both field conditions. Our results indicate that lower changes in POD activity and especially an increased proline content after exposure to osmotic stress during the early seedling stage could be considered as useful indices to facilitate selection efficiency for drought tolerance in adult plants.
PB  - Srpsko biološko društvo, Beograd, i dr.
T2  - Archives of Biological Sciences
T1  - Maize seedling performance as a potential index for drought tolerance
VL  - 70
IS  - 1
SP  - 167
EP  - 177
DO  - 10.2298/ABS170504036K
UR  - conv_975
ER  - 
@article{
author = "Kravić, Natalija and Babić, Vojka and Srdić, Jelena and Mesarović, Jelena and Anđelković, Violeta and Hadži-Tašković-Šukalović, Vesna",
year = "2018",
abstract = "Twenty-six maize landraces were tested in order to evaluate maize seedling performance as an index for drought tolerance in adult plants. Samples were subjected to polyethylene glycol-induced osmotic stress at the early seedling stage. Grain yield was obtained in field experiments under well-watered (OC) and a combination of drought and high plant density (HD) conditions. Osmotic stress caused a reduction in seedling growth (length, fresh and dry weight), and increase in the shoot and in particular the root proline contents in the majority of landraces, and variations in root peroxidase (POD) activity. Genotypes displaying more pronounced root growth reduction and higher proline contents exhibited decreased POD activity under osmotic stress. Direct positive correlations between the proline content and growth inhibition, and between the proline and soluble protein content were established. Correlations between the changes in POD activity and growth parameters were significant and positive, and significant but negative with the changes in the proline content. In the field, water stress led to a reduction in grain yield in all of the tested landraces. Correlations between grain yield from both experimental sets (OC and HD) and osmotic-induced changes in seedling root growth were negative, which was opposite to the highly significant and positive correlations between the changes in the seedling root proline content and yield. Also, genotypes with the highest seedling root proline content increase under osmotic stress, exhibited the highest stress tolerance index (STI) based on grain yield achieved under both field conditions. Our results indicate that lower changes in POD activity and especially an increased proline content after exposure to osmotic stress during the early seedling stage could be considered as useful indices to facilitate selection efficiency for drought tolerance in adult plants.",
publisher = "Srpsko biološko društvo, Beograd, i dr.",
journal = "Archives of Biological Sciences",
title = "Maize seedling performance as a potential index for drought tolerance",
volume = "70",
number = "1",
pages = "167-177",
doi = "10.2298/ABS170504036K",
url = "conv_975"
}
Kravić, N., Babić, V., Srdić, J., Mesarović, J., Anđelković, V.,& Hadži-Tašković-Šukalović, V.. (2018). Maize seedling performance as a potential index for drought tolerance. in Archives of Biological Sciences
Srpsko biološko društvo, Beograd, i dr.., 70(1), 167-177.
https://doi.org/10.2298/ABS170504036K
conv_975
Kravić N, Babić V, Srdić J, Mesarović J, Anđelković V, Hadži-Tašković-Šukalović V. Maize seedling performance as a potential index for drought tolerance. in Archives of Biological Sciences. 2018;70(1):167-177.
doi:10.2298/ABS170504036K
conv_975 .
Kravić, Natalija, Babić, Vojka, Srdić, Jelena, Mesarović, Jelena, Anđelković, Violeta, Hadži-Tašković-Šukalović, Vesna, "Maize seedling performance as a potential index for drought tolerance" in Archives of Biological Sciences, 70, no. 1 (2018):167-177,
https://doi.org/10.2298/ABS170504036K .,
conv_975 .

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