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Full-Text Articles in Plant Sciences

A Regional Comparison Of Water Use Efficiency For Miscanthus, Switchgrass And Maize, Andy Vanloocke, Tracy E. Twine, Marcelo Zeri, Carl J. Bernacchi Sep 2012

A Regional Comparison Of Water Use Efficiency For Miscanthus, Switchgrass And Maize, Andy Vanloocke, Tracy E. Twine, Marcelo Zeri, Carl J. Bernacchi

Andy VanLoocke

The production of cellulosic feedstocks for renewable fuels will increase over the coming decades. However, it is uncertain which feedstocks will be best suited for bioenergy production. A key factor dictating feedstock selection for a given region is water use efficiency (WUE), the trade-off between evapotranspiration (ET) and carbon uptake or productivity. Using an ecosystem model, two of the top candidate cellulosic feedstocks, Miscanthus × giganteus (miscanthus) and Panicum virgatum (switchgrass) were compared to Zea mays L. (maize), the existing dominant bioenergy feedstock, with 0 and 25% residue removal for the Midwest US. We determined productivity in three ways: harvested …


Growth And Physiological Responses Of Maize And Sorghum Genotypes To Salt Stress, Youping Sun, Wenwei Xu, Denise Rodriguez, Youping Sun Sep 2012

Growth And Physiological Responses Of Maize And Sorghum Genotypes To Salt Stress, Youping Sun, Wenwei Xu, Denise Rodriguez, Youping Sun

Plants, Soils, and Climate Faculty Publications

The growth and physiological responses of four maize inbred lines (CUBA1, B73, B5C2, and BR1) and four sorghum hybrids (SS304, NK7829, Sordan 79, and KS585) to salinity were determined. Fifteen days after sowing, seedlings were irrigated with nutrient solution (control) at electrical conductivity (EC) of 1.5 dS m−1 or saline solution at EC of 8.0 dS m−1 (salt treatment) for 40 days. Dry weight of shoots in maize was reduced by 58%, 65%, 62%, and 69% in CUBA1, B73, B5C2, and BR1, respectively, while that of sorghum was reduced by 51%, 56%, 56%, and 76% in SS304, NK7829, Sordan79, and …


Optimizing Greenhouse Corn Production: How Can Two-Spotted Spider Mites Be Controlled?, Robert Eddy, Daniel T. Hahn Apr 2012

Optimizing Greenhouse Corn Production: How Can Two-Spotted Spider Mites Be Controlled?, Robert Eddy, Daniel T. Hahn

Purdue Methods for Corn Growth

This publication describes our experiences controlling mites while conducting experiments to optimize greenhouse corn production. Controlled studies were not conducted, but we recommend cultural practices of water spray-offs of leaf undersides and the stripping lower leaves as the crop ages. Also recommended are applications of beneficial insect Phytoseiulus persimilis at very high rates. The rates are an update of our previous publication. Photos of the pest and cultural practices are provided.

This document is one entry in a series of questions and answers originally posted to the Purdue University Department of Horticulture & Landscape Architecture’s Plant Growth Facility Web site …


Optimizing Greenhouse Corn Production: What Is The Best Pot Size?, Derek Gambrel, Robert Eddy, Daniel T. Hahn Apr 2012

Optimizing Greenhouse Corn Production: What Is The Best Pot Size?, Derek Gambrel, Robert Eddy, Daniel T. Hahn

Purdue Methods for Corn Growth

This publication describes studies conducted to determine best pot size for optimizing greenhouse corn production. We suggest a 2.2-gallon container without large drainage holes extending up the side of the pot. This represents an update of our previous recommendation of a smaller pot, after observing instability in row planting configurations. Photos are included of corn in various size pots.

This document is one entry in a series of questions and answers originally posted to the Purdue University Department of Horticulture & Landscape Architecture’s Plant Growth Facility Web site (http://www.hort.purdue.edu/hort/facilities/greenhouse/CornMethod.shtml) regarding best practices for corn plant growth in a greenhouse. Controlled …


Optimizing Greenhouse Corn Production: Summary, Robert Eddy, Daniel T. Hahn Mar 2012

Optimizing Greenhouse Corn Production: Summary, Robert Eddy, Daniel T. Hahn

Purdue Methods for Corn Growth

This publication provides a summary of the goals and scope of our studies to optimize greenhouse corn production, as well as a single-page chart of all the recommendations. The chart includes recommendations for substrate, container, irrigation, fertilization, spacing and lighting. In this version, we updated the pot size recommendation.

This document is one entry in a series of questions and answers originally posted to the Purdue University Department of Horticulture & Landscape Architecture’s Plant Growth Facility Web site (http://www.hort.purdue.edu/hort/facilities/greenhouse/CornMethod.shtml) regarding best practices for corn plant growth in a greenhouse. Controlled studies were conducted with the goals of optimizing growth and …


Modulation Of Kernel Storage Proteins In Grain Sorghum (Sorghum Bicolor (L.) Moench), Tejinder Kumar, Ismail M. Dweikat, Shirley Sato, Zhengxiang Ge, Natalya Nersesian, Han Chen, Thomas Elthon, Scott Bean, Brian P. Ioerger, Mike Tilley, Thomas E. Clemente Jan 2012

Modulation Of Kernel Storage Proteins In Grain Sorghum (Sorghum Bicolor (L.) Moench), Tejinder Kumar, Ismail M. Dweikat, Shirley Sato, Zhengxiang Ge, Natalya Nersesian, Han Chen, Thomas Elthon, Scott Bean, Brian P. Ioerger, Mike Tilley, Thomas E. Clemente

Department of Agronomy and Horticulture: Faculty Publications

Sorghum prolamins, termed kafirins, are categorized into subgroups α, β, and γ. The kafirins are co-translationally translocated to the endoplasmic reticulum (ER) where they are assembled into discrete protein bodies that tend to be poorly digestible with low functionality in food and feed applications. As a means to address the issues surrounding functionality and digestibility in sorghum, we employed a biotechnology approach that is designed to alter protein body structure, with the concomitant synthesis of a co-protein in the endosperm fraction of the grain. Wherein perturbation of protein body architecture may provide a route to impact digestibility by reducing disulphide …