DROUGHT TOLERANCE IN BARLEY (HORDEUM VULGARE L.): PHYSIOLOGICAL AND GENETIC BASES AND MODERN BREEDING STRATEGIES


Emanuela FILIP1, Camelia URDĂ2, Marius AIPĂTIOAIE3, Ioana BERINDEAN4, Florin RUSSU5

Abstract. Drought represents a major abiotic stress factor that significantly affects plant growth, as well as physiological and metabolic processes, ultimately leading to reduced cereal productivity worldwide. Under such conditions, plants respond through stomatal closure, decreased photosynthetic activity, osmotic imbalance, and restricted nutrient uptake. In Europe, including Romania, the frequency and intensity of drought and heat stress events have increased, affecting barley (Hordeum vulgare L.), a species recognized for its high adaptability and ecological plasticity. Drought tolerance is a complex, polygenic trait involving numerous genes and quantitative trait loci (QTLs) associated with essential adaptive mechanisms. The integration of breeding, physiological, and genetic knowledge is essential for the development of valuable and well-adapted barley genotypes, ensuring yield stability and contributing to food security under the conditions imposed by ongoing climate change.

Keywords: barley, abiotic stress, yield stability, molecular breeding.

DOI 10.56082/annalsarsciagr.2026.1.47

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1Eng., PhD., Emanuela FILIP, Agricultural Research and Development Station Turda, Romania, Biotechnology and physico-chemical analysis laboratory, (e-mail: emanuelafilip33@gmail.com).
2Eng., PhD., Camelia URDĂ, Agricultural Research and Development Station Turda, Romania, Biotechnology and physico-chemical analysis laboratory, (e-mail: camelia.urda@scdaturda.ro).
3Eng., PhD. Student, Marius AIPĂTIOAIE, Agricultural Research and Development Station Turda, Romania, Biotechnology and physico-chemical analysis laboratory, (e-mail: marius.aipatioaie@scdaturda.ro).
4Prof., PhD., Eng., Ioana BERINDEAN, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania, (ioana.berindean@usamvcluj.ro).
5Eng., PhD., Florin RUSSU, Agricultural Research and Development Station Turda, Romania, Barley breeding laboratory, (e-mail: florin.russu@scdaturda.ro).

PUBLISHED in

Annals Academy of Romanian Scientists Series on Agriculture, Silviculture and Veterinary Medicine

Volume 15 no 1, 2026


ISSN PRINT 2069-1149

ISSN ONLINE 2344-2085