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Full-Text Articles in Life Sciences
Electrical Conductivity Of Nutrient Solution Influenced Photosynthesis, Quality, And Antioxidant Enzyme Activity Of Pakchoi (Brassica Campestris L. Ssp. Chinensis) In A Hydroponic System, Xiaotao Ding, Yuping Jiang, Hong Zhao, Doudou Guo, Lizhong He, Fuguang Liu, Qiang Zhou, Dilip Nandwani, Dafeng Hui, Jizhu Yu
Electrical Conductivity Of Nutrient Solution Influenced Photosynthesis, Quality, And Antioxidant Enzyme Activity Of Pakchoi (Brassica Campestris L. Ssp. Chinensis) In A Hydroponic System, Xiaotao Ding, Yuping Jiang, Hong Zhao, Doudou Guo, Lizhong He, Fuguang Liu, Qiang Zhou, Dilip Nandwani, Dafeng Hui, Jizhu Yu
Agricultural and Environmental Sciences Faculty Research
To find an electrical conductivity (EC) in the nutrient solution used for pakchoi (Brassica campestris L. ssp. Chinensis) cultivation that optimizes the plant’s physiology, growth, and quality, we conducted an experiment with eight EC treatments (from EC0 to EC9.6) in a hydroponic production system (i.e. soilless culture) under greenhouse condition in Shanghai, China. Plants biomass production, leaf photosynthesis, vegetable quality variables, tissue nitrate and nitrite contents, and antioxidant enzyme activities were measured. The results showed that very high (EC9.6) or low EC (EC0-0.6) treatments clearly decreased plants fresh weight (FW) and dry weight (DW), leaf size, leaf water content, leaf …
Effects Of Precipitation Changes On Switchgrass Photosynthesis, Growth, And Biomass: A Mesocosm Experiment, Dafeng Hui, Chih-Li Yu, Qi Deng, E. Kudjo Dzantor, Suping Zhou, Sam Dennis, Roger Sauve, Terrance L. Johnson, Philip A. Fay, Weijun Shen, Yiqi Luo
Effects Of Precipitation Changes On Switchgrass Photosynthesis, Growth, And Biomass: A Mesocosm Experiment, Dafeng Hui, Chih-Li Yu, Qi Deng, E. Kudjo Dzantor, Suping Zhou, Sam Dennis, Roger Sauve, Terrance L. Johnson, Philip A. Fay, Weijun Shen, Yiqi Luo
Agricultural and Environmental Sciences Faculty Research
Climate changes, including chronic changes in precipitation amounts, will influence plant physiology and growth. However, such precipitation effects on switchgrass, a major bioenergy crop, have not been well investigated. We conducted a two-year precipitation simulation experiment using large pots (95 L) in an environmentally controlled greenhouse in Nashville, TN. Five precipitation treatments (ambient precipitation, and -50%, -33%, +33%, and +50% of ambient) were applied in a randomized complete block design with lowland "Alamo" switchgrass plants one year after they were established from tillers. The growing season progression of leaf physiology, tiller number, height, and aboveground biomass were determined each growing …
Weed Dynamics During Transition To Conservation Agriculture In Western Kenya Maize Production, Judith A. Odhiambo, Urszula Norton, Dennis Ashilenje, Emmanuel C. Omondi, Jay B. Norton
Weed Dynamics During Transition To Conservation Agriculture In Western Kenya Maize Production, Judith A. Odhiambo, Urszula Norton, Dennis Ashilenje, Emmanuel C. Omondi, Jay B. Norton
Agricultural and Environmental Sciences Faculty Research
Weed competition is a significant problem in maize (Zea mays, L.) production in Sub-Saharan Africa. Better understanding of weed management and costs in maize intercropped with beans (Phaseolus vulgaris, L.) during transition to conservation agricultural systems is needed. Changes in weed population and maize growth were assessed for a period of three years at Bungoma where crops are grown twice per year and at Trans-Nzoia where crops are grown once per year. Treatments included three tillage practices: minimum (MT), no-till (NT) and conventional (CT) applied to three cropping systems: continuous maize/bean intercropping (TYPICAL), maize/bean intercropping with relayed mucuna after bean …
Interplanting Annual Ryegrass, Wheat, Oat, And Corn To Mitigate Iron Deficiency In Dry Beans, Emmanuel Chiwo Omondi, Andrew R. Kniss
Interplanting Annual Ryegrass, Wheat, Oat, And Corn To Mitigate Iron Deficiency In Dry Beans, Emmanuel Chiwo Omondi, Andrew R. Kniss
Agricultural and Environmental Sciences Faculty Research
This study evaluated whether grass intercropping can be used to alleviate Fe deficiency chlorosis in dry beans (Phaseolus vulgaris L.) grown in high pH, calcareous soils with low organic matter. Field studies were conducted at the University of Wyoming Sustainable Agriculture Research and Extension Center in 2009 and 2010. Black- and navy beans were grown alone or intercropped with annual ryegrass (Lolium multiflorum Lam.), oat (Avena sativa L.), corn (Zea mays L.), or spring wheat (Triticum aestivum L.) in a two-factor factorial strip-plot randomized complete block design. All four grass species increased chlorophyll intensity in dry beans. However, grass species …
Comparison Of Five Major Trichome Regulatory Genes In Brassica Villosa With Orthologues Within The Brassicaceae, Naghabushana K. Nayidu, Sateesh Kagale, Ali Taheri, Thushan S. Withana-Gamage, Isobel A. P. Parkin, Andrew G. Sharpe, Margaret Y. Gruber
Comparison Of Five Major Trichome Regulatory Genes In Brassica Villosa With Orthologues Within The Brassicaceae, Naghabushana K. Nayidu, Sateesh Kagale, Ali Taheri, Thushan S. Withana-Gamage, Isobel A. P. Parkin, Andrew G. Sharpe, Margaret Y. Gruber
Agricultural and Environmental Sciences Faculty Research
Coding sequences for major trichome regulatory genes, including the positive regulators GLABRA 1(GL1), GLABRA 2 (GL2), ENHANCER OF GLABRA 3 (EGL3), and TRANSPARENT TESTA GLABRA 1 (TTG1) and the negative regulator TRIPTYCHON (TRY), were cloned from wild Brassica villosa, which is characterized by dense trichome coverage over most of the plant. Transcript (FPKM) levels from RNA sequencing indicated much higher expression of the GL2 and TTG1 regulatory genes in B. villosa leaves compared with expression levels of GL1 and EGL3 genes in either B. villosa or the reference genome species, glabrous B. oleracea; however, cotyledon TTG1 expression was high in …
Prunus Domestica Pathogenesis-Related Protein-5 Activates The Defense Response Pathway And Enhances The Resistance To Fungal Infection, Ashraf El-Kereamy, Islam El-Sharkawy, Rengasamy Ramamoorthy, Ali Taheri, Deena Errampalli, Prakash Kumar, Subramanian Jayasankar
Prunus Domestica Pathogenesis-Related Protein-5 Activates The Defense Response Pathway And Enhances The Resistance To Fungal Infection, Ashraf El-Kereamy, Islam El-Sharkawy, Rengasamy Ramamoorthy, Ali Taheri, Deena Errampalli, Prakash Kumar, Subramanian Jayasankar
Agricultural and Environmental Sciences Faculty Research
Pathogenesis-related protein-5 (PR-5) has been implicated in plant disease resistance and its antifungal activity has been demonstrated in some fruit species. However, their roles, especially their interactions with the other defense responses in plant cells, are still not fully understood. In this study, we have cloned and characterized a new PR-5 cDNA named PdPR5-1 from the European plum (Prunus domestica). Expression of PdPR5-1 was studied in different cultivars varying in resistance to the brown rot disease caused by the necrotrophic fungus Monilinia fructicola. In addition transgenic Arabidopsis, ectopically expressing PdPR5-1 was used to study its role in other plant defense …