A process-based model integrating the effects of UV-B radiation through epidermis, cellular DNA, and its consequences to the leaf expansion was developed from key parameters in the published literature. Enhanced UV-B radiation-induced DNA damage significantly delayed cell division, resulting in significant reductions in leaf growth and development. Ambient UV-B radiation-induced DNA damage sign...

The dynamics of pigment concentrations are diagnostic of a range of plant physiological properties and processes. This paper appraises the developing technologies and analytical methods for quantifying pigments non-destructively and repeatedly across a range of spatial scales using hyperspectral remote sensing. Progress in deriving predictive relationships between various characteristics and tr...

Climate is a major selective force in nature. Exploring patterns of inter- and intraspecific genetic variation in functional traits may explain how species have evolved and may continue evolving under future climate change. Photoprotective pigments play an important role in short-term responses to climate stress in plants but knowledge of their long-term role in adaptive processes is lacking. I...

Study was carried out to assess the impact of cement dust on some selected plant species around industrial area. Deposition effect of cement dust on pigmentation was studied in Azadirachta indica, Pongamia pinnata, Delonix regia, Polyalthia longifolia and Ficus religiosa. Sampling was done about 500 meter distance difference from the cement industry and measurements were taken for all the plant...

Two barley (Hordeum vulgare L.) forage varieties – Hemus and Karnobat, with high and low Rubisco content in the fully expanded first leaves (Metodiev and Demirevska-Kepova, 1992), were compared in pot vegetation experiments in respect of yield. Changes in the content of leaf pigments, the levels of total soluble and Rubisco immunoreactive protein were followed during six phenophases: 3rd leaf, ...

Photosynthetic pigments, biochemical activities and chloroplast ultra-structure were investigated to survey the photosynthetic characteristics of ginkgo (Ginkgo biloba L.) leaves during natural senescence. During leaf senescence, the content of total chlorophyll decreased rapidly while the content of carotenoids changed little; the content of ATP, the activity of O2 evolution of chloroplasts, t...

Prior to the discovery of the soybean aphid, researchers at the University of WisconsinMadison have been researching the cause of several abnormal symptoms of unknown cause common to soybean in most regions of Wisconsin. Major symptoms are changes in leaf and pod appearance that frequently are confused with symptoms caused by post-emergence herbicides. Plants with abnormal leaf phenotypes are c...

Drought is a major constraint for agricultural production worldwide and likely to become aggravated by global warming. It can induce land degradation, exorbitant food prices menace livelihoods. Approaches retaining optimal yield, especially in rainfed staple crops such as cowpea [Vigna unguiculata (L.) Walp] are paramount. Biostimulants vermicompost leachate (VCL), seaweed extract [Kelpak® (KEL...

Air pollution has assumed a mammoth proportion in recent times because of causation of health hazards and loss of economic productivity of crop plants. The present study was carried out to assess the impact of cement klin dust pollution on some selected legume crops viz. Arachis hypogaea, Vigna mungo, V. radiate, Dolichos lablab and Cajanus cajan which are grown around the cement industry. Effe...