TY - JOUR AU - COSMULESCU, Sina Niculina AU - TRANDAFIR, Ion AU - ACHIM, Gheorghe AU - BACIU, Adrian PY - 2011/05/30 Y2 - 2024/03/29 TI - Juglone Content in Leaf and Green Husk of Five Walnut (Juglans regia L.) Cultivars JF - Notulae Botanicae Horti Agrobotanici Cluj-Napoca JA - Not Bot Horti Agrobo VL - 39 IS - 1 SE - Research Articles DO - 10.15835/nbha3915728 UR - https://notulaebotanicae.ro/index.php/nbha/article/view/5728 SP - 237-240 AB - <span>Juglone (5-hydroxy-1,4-napthoquinone) is a chemical compound released by walnut trees that can be toxic for surrounding plant species. In the present study, juglone was identified in leaves and green husk in five walnut cultivars: Germisara, Jupanesti, Franquette, Vina, Valcor by using high performance liquid chromatography (HPLC-RP). Juglone was found predominant in green husk (average value of cultivars is about 31.308 mg/100 g). Significant differences in contents of identified juglone were observed among cultivars that ranged from 20.56 to 42.78 mg/100g for green husk, and 5.42 to 22.82 mg/100 g for leaves. It was also found that walnut green husk and leaves represent the most important source of walnut phenolics.</span> ER -