20.500.12556/RUL-128282 Severe water deficiency during the mid-vegetative and reproductive phase has little effect on proso millet performance Climate change can result in extreme droughts, significantly affecting crop production. C$_4$ crop proso millet (Panicum miliaceum L.) has the lowest water consumption among all of the cereal crops. Understanding its survival mechanisms is thus crucial for agriculture. Furthermore, yield reduction does not only occur directly due to water shortage, but is also a consequence of an impaired element uptake during drought. This study aimed to examine the effect of water deficiency on proso millet leaf traits, plant biomass partition, and yield. In addition, leaf element contents were analysed, including silicon, which is an important multifunctional element for grasses. The majority of the measured parameters showed little change from the control to the moderate and severe water shortage treatments, even though the soil moisture levels differed significantly. The most pronounced reduction in comparison to the control was for leaf biomass, leaf stomatal conductance, and leaf silicon, phosphorus, calcium, and sulphur contents. Conversely, an increase was obtained for leaf potassium and chlorine contents. Panicle biomass was the same for all plant groups. Leaf silicon was positively correlated to reflectance in the UV region, while leaf calcium was negatively correlated to reflectance in the visible regions, which might prevent damage due to short-wave UV radiation and provide sufficient visible light for photosynthesis. The efficient light and water management, reduction of leaf biomass, and same-sized root system may be the mechanisms that mitigate the negative effects of water shortage in proso millet. Panicum miliaceum L. water shortage drought tolerance leaf traits element analysis true false true Angleški jezik Ni določen Članek v reviji 2021-07-08 08:29:37 2021-07-08 08:29:37 2022-09-07 04:14:10 0000-00-00 00:00:00 2019 0 0 21 str. iss. 10, art. 2155 Vol. 11 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 574 2073-4441 10.3390/w11102155 5196367 RAZ_Grasic_Mateja_2019.pdf RAZ_Grasic_Mateja_2019.pdf 1 AF6C3833DD6C79D9A6CAF4BD8F0E5614 bafc697aca7b93161a7f33620f6157bc5d22f52d493cc490e000129b1d10c1e3 fc574bf7-dfb5-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=144988 https://www.mdpi.com/2073-4441/11/10/2155 1 bc0d52c8-dfb5-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=144968 Biotehniška fakulteta 0 0 0