in order to determine the effects of water deficit at different growth stages of sugar beet and optimal usage of water on quality and quantity characters of sugar beet, a factorial experiment based on randomized complete block design was conducted with 13 treatments and four replications in 2000 and 2001 in agricultural research center of hamadan. for the first factor, irrigation withheld in th...

The aim of present study was to evaluate the effects of drought stress on net photosynthesis rate (Pn), stomatal resistance, water use efficiency (WUE) and biomass (BM) of six maize (Zea mays L.) hybrids. Drought stress applied by withholding water supply at 4-5 leaf stage (S1, vegetative stage), anthesis (S2, reproductive stage), and dual stress condition (S3, combination of vegetative and rep...

Maize is one of the most important crops globally that provides food, feed, and bioenergy. However, shading stress threatens maize production. In this study, we investigated the effects of shading on photosynthate accumulation and distribution of summer maize in the field. Zhengdan958 (ZD958) and Denghai 605 (DH605) were used as experimental materials in a field experiment running from 2013 to ...

ESA’s upcoming satellites Sentinel-2 (S2) and Sentinel3 (S3) aim to ensure continuity for Landsat, Spot and MERIS observations by providing multispectral and hyperspectral images of high temporal resolution. S2 and S3 will deliver near real-time operational products with a high accuracy for land monitoring, but therefore robust and accurate retrieval methods are needed. Machine learning algorit...

Senescence-associated genes (SAGs) are up-regulated during plant senescence and may have been implicated in encoding enzymes involved in metabolism of senescence tissues. The gene Osl2 (GABA:pyruvate-transaminase) which is upregulated during leaf senescence in rice (Oryza sativa) was functionally characterized. The recombinant Osl2 fusion protein over-expressed in Escherichia coli displays pyru...

The aim of this study was to investigate the total phenolic content, total flavonoid contents, antioxidant activity and antimicrobial activity of ethanolic extract from stems (S) and leaves (L) of Impatiens balsamina L. (Balsaminaceae), which were harvested in Korea on March 10, 2011 (S1 and L1), May 14, 2011 (S2 and L2), and July 5, 2011 (S3 and L3), respectively. Our results revealed that the...