chlorophyll fluorescence induction is a rapid and noninvasive technique for measuring photosynthetic electron transport in plants. chlorophyll fluorescence measurements were performed under greenhouse condition to characterize how the fluorescence induction curves (kautsky curve) and its parameters were affected by metribuzin in susceptible and resistant junglerice (echinochloa colona (l.) link...

Aims: To assess heat-induced PSII damage and efficiency in eight promising backcross introgression lines (BC2F6) of KMR-3R/N22 possessing qHTSF1.1 qHTSF4.1.
 Study Design: Randomized Complete Block Design (RCBD) with three replications.
 Place Duration Study: ICAR-Indian Institute Rice Research, Hyderabad India during wet/rainy (Kharif) season 2018.
 Methodology: Eight ILs parent...

The photosynthetic activity of marine phytoplankton from five algal classes (Phaeodactylum tricornutum, Skeletonema costatum, Thalassiosira oceanica, Thalassiosira weissflogii, Dunaliella tertiolecta, Mantoniella squamata, Emiliania huxleyi, Pavlova lutheri and Heterosigma akashiwo) was investigated under identical growth conditions to determine interspecies differences. Primary photochemistry ...

In many crops, including grapevine, the distribution of reflecting dust on foliage is a practice potentially leading to mitigation environmental stresses such as excessive light and limited water supply. This study aimed evaluate whether presence leaves may affect PSII photochemical efficiency gas-exchange measurements, thus biased results. The was conducted in winery located at Benevento (Ital...

Benzoapyrene (B[a]P) pollution poses a threat to the environment and food chain consequently human health. However, alleviation of harmful effects B[a]P in perennial ryegrass ( Lolium perenne L.) by application exogenous nitric oxide (NO) has been ignored. Thus, this paper sodium nitroprusside (SNP, NO donor) on growth, photosynthetic fluorescence characteristics, antioxidant enzyme activity ex...

Some epiphytic Hymenophyllaceae are restricted to lower parts of the host (< 60 cm; 10-100 μmol photons m(-2) s(-1)) in a secondary forest of Southern Chile; other species occupy the whole host height (≥ 10 m; max PPFD > 1000 μmol photons m(-2) s(-1)). Our aim was to study the photosynthetic light responses of two Hymenophyllaceae species in relation to their contrasting distribution. We determ...

Mexican lime is one of the commercial citrus cultivars in the world, which is commonly used as a citrus rootstock in the southern regions of Iran. This cultivar is one of the most sensitive citrus cultivars to cold stress and is used as a cold-sensitive plant in many citrus studies. This study aimed to investigate the effect of melatonin (0 and 500 μM), mannitol (0 and 50 μM), acetic acid (0 an...

Plant disease and pests influence the physiological state and restricts the healthy growth of crops. Physiological measurements are considered the most accurate way of assessing plant health status. In this paper, we researched the use of an in situ hyperspectral remote sensor to detect plant water status in winter wheat infected with powdery mildew. Using a diseased nursery field and artificia...