The impact of UV radiation at high altitudes close to the equator on morphology and productivity of pea (Pisum sativum) in different seasons

Roro, Amsalu Gobena; Terfa, Meseret Tesema; Solhaug, Knut Asbjørn; Tsegaye, Admassu; Olsen, Jorunn E.; Torre, Sissel

doi:10.1016/j.sajb.2016.05.011

Cited by 21 publications

(14 citation statements)

References 87 publications

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“…Extremes of temperature and low humidity may alter yields in some plants such as peas, while other changes, e.g., decreased plant growth and flowering, may be more influenced by UV radiation but without significant effects on pea pod production. 216 Recent work confirms earlier findings that direct effects of UV radiation leading to modification of agricultural production occur through alterations in physiological and biochemical processes. 185,217 With regard to direct effects, the prevalence and degree of severity of pathogen and pest attack on crops and other plants may be reduced by the biochemical reactions of the host plant, mediated through an increase in UV-induced polyphenolic compounds (see section 3.5).…”

Section: Uv Radiation and Climate Can Have Positive And Negative Effects On Food Quality And Yield In Agricultural Systemssupporting

confidence: 84%

Environmental effects of ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, update 2017

Bernhard

Neale

Barnes

et al. 2018

Photochem Photobiol Sci

214

107

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The Environmental Effects Assessment Panel (EEAP) is one of three Panels of experts that inform the Parties to the Montreal Protocol. The EEAP focuses on the effects of UV radiation on human health, terrestrial and aquatic ecosystems, air quality, and materials, as well as on the interactive effects of UV radiation and global climate change. When considering the effects of climate change, it has become clear that processes resulting in changes in stratospheric ozone are more complex than previously held. Because of the Montreal Protocol, there are now indications of the beginnings of a recovery of stratospheric ozone, although the time required to reach levels like those before the 1960s is still uncertain, particularly as the effects of stratospheric ozone on climate change and vice versa, are not yet fully understood. Some regions will likely receive enhanced levels of UV radiation, while other areas will likely experience a reduction in UV radiation as ozone- and climate-driven changes affect the amounts of UV radiation reaching the Earth's surface. Like the other Panels, the EEAP produces detailed Quadrennial Reports every four years; the most recent was published as a series of seven papers in 2015 (Photochem. Photobiol. Sci., 2015, 14, 1-184). In the years in between, the EEAP produces less detailed and shorter Update Reports of recent and relevant scientific findings. The most recent of these was for 2016 (Photochem. Photobiol. Sci., 2017, 16, 107-145). The present 2017 Update Report assesses some of the highlights and new insights about the interactive nature of the direct and indirect effects of UV radiation, atmospheric processes, and climate change. A full 2018 Quadrennial Assessment, will be made available in 2018/2019.

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Section: Uv Radiation and Climate Can Have Positive And Negative Effects On Food Quality And Yield In Agricultural Systemssupporting

confidence: 84%

Environmental effects of ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, update 2017

Bernhard

Neale

Barnes

et al. 2018

Photochem Photobiol Sci

214

107

View full text Add to dashboard Cite

show abstract

“…A similar finding such as delay in achieving growth phases like flowering was reported in crops like bush bean and green gram under high UV-B radiation [47,48]. In pea crop, the flowering was delayed by 2-5 days when exposed to UV-B [14]. Sikuku et al [49] also reported that environmental stresses to plants took a longer time for flowering and to mature as compared to a crop grown under optimum growth conditions.…”

Section: Phenological Characters Influenced By Uv-b Radiationsupporting

confidence: 64%

“…various regulatory effects [9][10][11]. It has considerable consequences including anatomy, morphology, physiology, biochemistry, phenology and yield and these responses vary markedly within and between species [12][13][14]. The intraspecific variation to enhanced or supplemental UV-B radiation in terms of morphological parameters has been determined in many important crop species, such as barley [15,16], maize [17,18], wheat [19,20], rice [21,22] cucumber [23], pea [14], Amaranthus [24] and soybean [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Changes in Morpho-physiological and Yield Parameters of Rice (Oryza sativa L.) in Response to Ultraviolet-B (UV-B) Radiation

Wagh

Nandini

2019

IJECC

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A rice variety Jyothi (PTB 39) is a red kernelled with bold grain, popular in the region of Kerala, India used in the study. Plants were grown in pots under three different conditions, natural solar UV-B conditions, UV-B excluded condition using UV-B filters and supplemental UV-B using UV-B lamps along with ambient solar radiation. During the study period, UV-B radiation was in the range of 1.30 to 3.58 Wm2 which affected the productivity of the crop under open solar condition. A decrease in morphological traits like plant height, number of tillers, flag leaf angle and increase in leaf thickness were observed. Physiological parameters, leaf gas exchange parameters and biochemical constituents such as chlorophyll content also recorded less value under high UV-B condition along with the high content of protective compounds such as flavonoid content, catalase and PAL activity. The phenophases of the crop were also delayed by 4-5 days under UV-B radiation exposed conditions. All these negative impacts of UV-B radiation on crop leads to restricted filling of grain, lesser harvest index and grain development leading to a decrease in yield and yield attributing characters.

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“…Thus, the visual appearance and transmission of radiation, especially UV radiation, need to be considered. For example, UV radiation (190–350 nm) and visible light radiation (400–700 nm) can accelerate lipid oxidation in food systems and hinder plant growth …”

Section: Resultsmentioning

confidence: 99%

Effect of modified rubber powder on the morphology and thermal and mechanical properties of blown poly(lactic acid)–hydroxyl epoxidized natural rubber films for flexible film packaging

Phetphaisit

Wapanyakul

Phinyocheep

2019

J of Applied Polymer Sci

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In this study, we prepared and used modified natural rubber powder to increase the toughness of poly(lactic acid) (PLA) films. We blended PLA and hydroxyl epoxidized natural rubber (HENR) via a melt‐mixing process with twin‐screw extruder and a blowing machine. We investigated the influence of the HENR content in the blend films on the microstructure, thermal, mechanical, and optical properties. The morphology of the blend showed a coarse surface and elongated fibrils of HENR in the PLA matrix. After blowing, the dispersion of small particles of HENR in the substrate was seen. The size of the remaining HENR particles was smaller than that of the starting powder. The compatibility of HENR and the remaining rubber particles may have synergistically contributed to improvements in the elongation at break, impact strength, and ultraviolet–visible transition protection of the PLA films. The elongation at break drastically increased from 3 to 228% after PLA was blended with 20 wt % HENR. On the other hand, all of the blends exhibited lower glass‐transition temperatures and cold crystallization temperatures than the pure PLA films. We concluded that the blend was partially compatible and may have increased the flexibility of the PLA films. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47503.

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The impact of UV radiation at high altitudes close to the equator on morphology and productivity of pea (Pisum sativum) in different seasons

Cited by 21 publications

References 87 publications

Environmental effects of ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, update 2017

Environmental effects of ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, update 2017

Changes in Morpho-physiological and Yield Parameters of Rice (Oryza sativa L.) in Response to Ultraviolet-B (UV-B) Radiation

Effect of modified rubber powder on the morphology and thermal and mechanical properties of blown poly(lactic acid)–hydroxyl epoxidized natural rubber films for flexible film packaging

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