Original scientific paper

https://doi.org/10.31298/sl.144.11-12.5

Physiological responses of two pedunculate oak (Quercus robur L.) families to combined stress conditions – drought and herbivore attack

Andrej Pilipović ; Univesity of Novi Sad, Institute of Lowland Forestry and Environment, Novi Sad, Serbia
Milan Drekić ; Univesity of Novi Sad, Institute of Lowland Forestry and Environment, Novi Sad, Serbia
Srđan Stojnić ; Univesity of Novi Sad, Institute of Lowland Forestry and Environment, Novi Sad, Serbia
Nataša Nikolić ; Univesity of Novi Sad, Institute of Lowland Forestry and Environment, Novi Sad, Serbia
Branislav Trudić ; Food and Agriculture Organization of the United Nations, Rome, Italy
Marina Milović ; Univesity of Novi Sad, Institute of Lowland Forestry and Environment, Novi Sad, Serbia
Leopold Poljaković-Pajnik ; Univesity of Novi Sad, Institute of Lowland Forestry and Environment, Novi Sad, Serbia
Milan Borišev ; Univesity of Novi Sad, Institute of Lowland Forestry and Environment, Novi Sad, Serbia
Saša Orlović ; Univesity of Novi Sad, Institute of Lowland Forestry and Environment, Novi Sad, Serbia

Abstract

Pedunculate oak (Quercus robur L.) is economically and ecologically one of the most important tree species in lowland forests of Southeastern Europe, and it is endangered by numerous biotic and abiotic factors. In this study, we investigated the effect of drought and herbivore attack of gypsy moth (Lymantria dispar L.) on two families of young oak seedlings subjected to the following treatments: drought (D); gypsy moth (GM); both drought and gypsy moth (D+GM) and control (Ø) for a period of 15 days followed by a 7-day recovery period. During both treatment and recovery, physiological parameters - net photosynthesis (A), transpiration (E), stomatal conductance (gs), sub-stomatal CO₂ concentration (Ci), water use efficiency (WUE), nitrate reductase activity (NRA) and chlorophyll content (Chl) were measured. Our results showed significant effects of stress factors on physiological processes in oak seedlings which could have potential impact on forest regeneration. Also, differences in the reaction between investigated families indicated the need for breeding and selection of more resistant progenies and provenances of pedunculate oak.

Keywords

pedunculate oak; photosynthesis; WUE; SPAD; nitrate reductase activity

Hrčak ID:

248751

URI

https://hrcak.srce.hr/248751

Publication date:

31.12.2020.

Article data in other languages: croatian

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