20.500.12556/RUL-167525 Growing under photoselective nets affects the gas exchange and chemical composition of the leaves of highbush blueberry (Vaccinium corymbosum L.) before and after harvest The use of photoselective nets in highbush blueberry (Vaccinium corymbosum L.) orchards could affect the light properties below the nets, along with the plants’ physiological processes and the chemical composition of their leaves. In our research, we compared the effects of black, red, yellow, and white exclusion nets with full-sun conditions (control) on light quality and quantity and the performance of blueberry ‘Bluecrop’ leaves over two consecutive years. The light properties were found to be altered by the nets. The net photosynthesis and leaf gas exchange did not differ among the treatments in 2022. In 2023, the lowest net photosynthesis was measured in the leaves of plants under the control treatment (7.08 µmol m$^{−2}$ s$^{−1}$) before harvest and under the black (3.01 µmol m$^{−2}$ s$^{−1}$) and red nets (3.36 µmol m$^{−2}$ s$^{−1}$) after harvest. At the same time, plants without fruit exhibited significantly lower values of carbon assimilation. The highest chlorophyll fluorescence value was measured in the plants under the red net (0.59) before harvest and under the white exclusion net (0.40) after harvest. Among the measured chloroplast pigments, zeaxanthin increased under the yellow net and the control treatment in 2022, while in 2023, it increased under the red net, white exclusion net, and control treatment before harvest. The total phenolics differed significantly among the treatments across all three sampling dates, with the highest contents measured before harvest in 2023. These promising results indicate that other blueberry cultivars and colored photoselective nets should also be examined in future experiments. ‘Bluecrop’ exclusion net light properties net photosynthesis photosynthetic pigments phenolics ameriška borovnica protitočne mreže fotoselektivne mreže fotosinteza izmenjava plinov kemična sestava fenolne spojine fenoli Vaccinium corymbosum true false true Angleški jezik Slovenski jezik Članek v reviji 2025-02-26 12:41:04 2025-02-26 12:41:10 2025-03-12 03:53:50 0000-00-00 00:00:00 2025 0 0 12 str. art. 127565 Vol. 166 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 634.73 1161-0301 10.1016/j.eja.2025.127565 227405315 1-s2.0-S1161030125000619-main.pdf 1-s2.0-S1161030125000619-main.pdf 1 B0DBE834ECA3E32FB70E5EF2A2A3DA4F a0b492a388db8b17fee1a2dc57d4ea756ef93b4235cfc98a10380479a58e0a81 1319d857-fe85-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=200536 https://www.sciencedirect.com/science/article/pii/S1161030125000619 1 a8322ed4-f435-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=200133 Biotehniška fakulteta 0 0 0