caa a22 4500 475751183 CHVBK 20180406123524.0 cr unu---uuuuu 170329e20000101xx s 000 0 eng 10.1023/A:1009827222588 doi (NATIONALLICENCE)springer-10.1023/A:1009827222588 Effects of spring and summer levels of UV-B radiation on the growth and reproduction of a temperate perennial forb [Elektronische Daten] [Eric McCloud, May Berenbaum] Narrow-leaved plantain (Plantago lanceolata L.), a perennial forb, flowers for virtually the full length of the growing season in temperate latitudes and as a result it is exposed to widely variable intensities of shortwave (UV-B) radiation. In order to determine effects of spring and summer levels of UV-B exposure on growth and development, representatives of 42maternal families were grown for 85days at 3.2 and 6.4kJm−2 day−1 BE300, levels corresponding to early spring and mid-summer in central Illinois. Impacts on early vegetative stages were most pronounced; early vegetative growth was decreased by higher levels of UV-B and both leaf angle (a measure of erectness) and leaf hair density were increased. At harvest, vegetative growth was significantly affected by higher levels of UV-B as well; the mass of senescent leaves and crown tissue were both decreased. Although exposure to higher levels of UV-B decreased inflorescence number by nearly 15%, it did not significantly alter reproductive biomass. Significant variation attributable to maternal families was present in nearly all measurements and the range of variation among families was wider than among UV-B treatments. A marginally significant (p=0.07) maternal family by UV-B interaction was found for the number of inflorescences, suggesting that, within populations of this plant, some small amount of genetic variation exists to allow for differential reproductive performance under a regime simulating spring and summer differences in UV-B exposure. For the most part, however, in this cosmopolitan species the level of adaptation to natural levels of variation in UV-B radiation does not differ dramatically among maternal families. Kluwer Academic Publishers, 2000 Genetic variation nationallicence Leaf hairs nationallicence Narrow-leaved plantain nationallicence Plant growth nationallicence Plantago lanceolata nationallicence McCloud Eric Department of Biology, University of Southern Indiana, 47712, Evansville, IN, USA aut Berenbaum May Department of Entomology, 320 Morrill Hall, 505 S. Goodwin, 61801-3795, Urbana, IL, USA aut Plant Ecology Kluwer Academic Publishers 146/1(2000-01-01), 61-66 1385-0237 146:1<61 2000 146 11258 https://doi.org/10.1023/A:1009827222588 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1009827222588 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- McCloud Eric Department of Biology, University of Southern Indiana, 47712, Evansville, IN, USA aut NATIONALLICENCE 700 1- Berenbaum May Department of Entomology, 320 Morrill Hall, 505 S. Goodwin, 61801-3795, Urbana, IL, USA aut NATIONALLICENCE 773 0- Plant Ecology Kluwer Academic Publishers 146/1(2000-01-01), 61-66 1385-0237 146:1<61 2000 146 11258 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer