Prijović, MladenSokolović, DejanRadović, JasminaPetrović, MirjanaZornic, VladimirJevtić, GoranBabić, Snežana2025-12-022025-12-0220251222-42272067-572010.59665/rar4268https://rifoc.ikbks.com/handle/123456789/231Рад у истакнутом међународном часопису (М 22)Perennial ryegrass is an essential cool-season forage grass with high-quality biomass, but with pronounced sensitivity to drought. This research was aimed to determine the shoot dry matter and root characteristics of perennial ryegrass populations (cultivar K-11 and breeding population LPb3). 20 randomly chosen individual plants per population were clonally divided into twelve small parts, remets, and transferred into the plastic root-screening tubes for root length and depth density evaluation. Also, shoot dry matter (SDM) was analysed. The experiment was designed as a two-factorial design, with population and watering regime as factors (2x4), in three replications. Analysed populations showed different root and shoot characteristics, especially in treatments with water reduction. Significant differences for most of the analysed traits between treatments were determined. Shoot dry matter was higher by 9% on average in population LPb3 than in K-11. Also, the dry matter yield of the total root dry matter (TRDM) was larger in LPb3. Treatments significantly affected total root dry matter, which dropped with water reduction. Dry matter of roots below 90 cm (RB90) was statistically significantly higher in LPb3 than in K-11. Broad-sense heritability and estimated genetic gain for most analysed traits were higher in population LPb3 than in K-11. The breeding of all investigated traits in this perennial ryegrass material is promising, especially in population LPb3.enbreedinggenotypesroot/shoot ratioroot dry mattershoot dry matterarticle