Poljoprivreda, Vol. 22 No. 2, 2016.
Izvorni znanstveni članak
https://doi.org/10.18047/poljo.22.2.3
Impact of abiotic stress on photosynthetic efficiency and leaf temperature in sunflower
Antonela Markulj Kulundžić
; Poljoprivredni institut Osijek, Južno predgrađe 3, 31000 Osijek, Hrvatska
Josip Kovačević
; Poljoprivredni institut Osijek, Južno predgrađe 3, 31000 Osijek, Hrvatska
Marija Viljevac Vuletić
; Poljoprivredni institut Osijek, Južno predgrađe 3, 31000 Osijek, Hrvatska
Ana Josipović
; Poljoprivredni institut Osijek, Južno predgrađe 3, 31000 Osijek, Hrvatska
Ivica Liović
; Poljoprivredni institut Osijek, Južno predgrađe 3, 31000 Osijek, Hrvatska
Anto Mijić
; Poljoprivredni institut Osijek, Južno predgrađe 3, 31000 Osijek, Hrvatska
Hrvoje Lepeduš
; Sveučilište J.J. Strossmayera u Osijeku, Filozofski fakultet, Osijek, Hrvatska
Maja Matoša Kočar
; Poljoprivredni institut Osijek, Južno predgrađe 3, 31000 Osijek, Hrvatska
Sažetak
The aim of this research was to investigate the variability of photosynthetic performance index (PIABS) and leaf temperature values measured in V6 development phase on 13 sunflower hybrids, grown in stressful conditions. The pot trial was made up of two treatments, one (T1) with 60% Field Water Capacity (FWC), and the other one (T2) with 80% FWC. Significant differences between T1 and T2 treatments were established for both of these parameters which prove their dependence on the water content in the soil, while the influence of hybrid was evident only in the case of PIABS. Although in T1, as opposed to T2, all sunflower hybrids reacted by increasing leaf temperature, reaction to stress conditions measured with PIABS parameter was not uniform. Some of the hybrids reacted by decreasing PIABS values, while others reacted by increasing their PIABS values. Therefore, it can be concluded that changes in parameters were independent of each other, which was confirmed by correlation analysis. Investigated parameters are suitable for determining the existence of undesirable environmental conditions that cause stress in plants and can be used in breeding of sunflower to withstand abiotic stress conditions, i.e. in selection of stress tolerant hybrids.
Ključne riječi
Helianthus annuus; soil water content; hybrid; correlation
Hrčak ID:
171965
URI
Datum izdavanja:
19.12.2016.
Posjeta: 1.993 *