The effect of plant defense response to drought on selected yield parameters in barley

agronomic characters air temperature altura caracteres de rendimiento cebada cervecera composante de rendement crop yield cultivos de primavera culture de printemps defence mechanisms drought resistance drought stress environmental factors facteur de rendement facteur du milieu factores ambientales factores de rendimiento gene gene expression genes genotipos genotypes hauteur height hordeum vulgare humedad relativa malting barley mecanismos de defensa orge de brasserie peso de las semillas plant response poids des semences relative humidity rendement des cultures rendimiento de cultivos resistance to injurious factors respuesta de la planta seed weight spring crops temperatura del aire variedades varieties yield components yield factors