Using An Active-Optical Sensor To Develop
An Optimal Ndvi Dynamic Model For High-Yield
Rice Production (Yangtze, China),
2017
Nanjing Agricultural University
Using An Active-Optical Sensor To Develop An Optimal Ndvi Dynamic Model For High-Yield Rice Production (Yangtze, China), Xiaojun Liu, Richard B. Ferguson, Hengbiao Zheng, Qiang Cao, Yongchao Tian, Weixing Cao, Yan Zhu
Department of Agronomy and Horticulture: Faculty Publications
The successful development of an optimal canopy vegetation index dynamic model for obtaining higher yield can offer a technical approach for real-time and nondestructive diagnosis of rice (Oryza sativa L) growth and nitrogen (N) nutrition status. In this study, multiple rice cultivars and N treatments of experimental plots were carried out to obtain: normalized difference vegetation index (NDVI), leaf area index (LAI), above-ground dry matter (DM), and grain yield (GY) data. The quantitative relationships between NDVI and these growth indices (e.g., LAI, DM and GY) were analyzed, showing positive correlations. Using the normalized modeling method, an appropriate NDVI simulation model …
Genomic Prediction With Pedigree And Genotype X Environment Interaction In Spring Wheat Grown In South And West Asia, North Africa, And Mexico, Sivakumar Sukumaran, José Crossa, Diego Jarquin, Marta Lopes, Matthew P. Reynolds
Department of Agronomy and Horticulture: Faculty Publications
Developing genomic selection (GS) models is an important step in applying GS to accelerate the rate of genetic gain in grain yield in plant breeding. In this study, seven genomic prediction models under two cross-validation (CV) scenarios were tested on 287 advanced elite spring wheat lines phenotyped for grain yield (GY), thousand-grain weight (GW), grain number (GN), and thermal time for flowering (TTF) in 18 international environments (year-location combinations) in major wheat-producing countries in 2010 and 2011. Prediction models with genomic and pedigree information included main effects and interaction with environments. Two random CV schemes were applied to predict a …
Validation Of Qtl Mapping And
Transcriptome Profiling For Identification Of
Candidate Genes Associated With Nitrogen
Stress Tolerance In Sorghum,
2017
University of Nebraska-Lincoln
Validation Of Qtl Mapping And Transcriptome Profiling For Identification Of Candidate Genes Associated With Nitrogen Stress Tolerance In Sorghum, Malleswari Gelli, Anji Reddy Konda, Kan Liu, Chi Zhang, Thomas E. Clemente, David R. Holding, Ismail M. Dweikat
Department of Agronomy and Horticulture: Faculty Publications
Background: Quantitative trait loci (QTLs) detected in one mapping population may not be detected in other mapping populations at all the time. Therefore, before being used for marker assisted breeding, QTLs need to be validated in different environments and/or genetic backgrounds to rule out statistical anomalies. In this regard, we mapped the QTLs controlling various agronomic traits in a recombinant inbred line (RIL) population in response to Nitrogen (N) stress and validated these with the reported QTLs in our earlier study to find the stable and consistent QTLs across populations. Also, with Illumina RNA-sequencing we checked the differential expression of …
Pollen-Mediated Gene Flow From Glyphosate-Resistant Common
Waterhemp (Amaranthus Rudis Sauer): Consequences For The Dispersal Of Resistance Genes,
2017
University of Nebraska-Lincoln
Pollen-Mediated Gene Flow From Glyphosate-Resistant Common Waterhemp (Amaranthus Rudis Sauer): Consequences For The Dispersal Of Resistance Genes, Debalin Sarangi, Andrew J. Tyre, Eric L. Patterson, Todd A. Gaines, Suat Irmak, Stevan Z. Knezevic, John L. Lindquist, Amit J. Jhala
Department of Agronomy and Horticulture: Faculty Publications
Gene flow is an important component in evolutionary biology; however, the role of gene flow in dispersal of herbicide-resistant alleles among weed populations is poorly understood. Field experiments were conducted at the University of Nebraska-Lincoln to quantify pollen-mediated gene flow (PMGF) from glyphosate-resistant (GR) to -susceptible (GS) common waterhemp using a concentric donorreceptor design. More than 130,000 common waterhemp plants were screened and 26,199 plants were confirmed resistant to glyphosate. Frequency of gene flow from all distances, directions, and years was estimated with a double exponential decay model using Generalized Nonlinear Model (package gnm) in R. PMGF declined by 50% …
Estimating Yield Gaps At The Cropping System Level,
2017
University of Nebraska-Lincoln
Estimating Yield Gaps At The Cropping System Level, Nicolas Guilpart, Patricio Grassini, Victor O. Sadras, Jagadish Timsina, Kenneth Cassman
Department of Agronomy and Horticulture: Faculty Publications
Yield gap analyses of individual crops have been used to estimate opportunities for increasing crop production at local to global scales, thus providing information crucial to food security. However, increases in crop production can also be achieved by improving cropping system yield through modification of spatial and temporal arrangement of individual crops. In this paper we define the cropping system yield potential as the output from the combination of crops that gives the highest energy yield per unit of land and time, and the cropping system yield gap as the difference between actual energy yield of an existing cropping system …
Modeling Pollen-Mediated Gene Flow From Glyphosate-Resistant
To -Susceptible Giant Ragweed (Ambrosia Trifida L.) Under Field Conditions,
2017
University of Nebraska-Lincoln
Modeling Pollen-Mediated Gene Flow From Glyphosate-Resistant To -Susceptible Giant Ragweed (Ambrosia Trifida L.) Under Field Conditions, Zahoor A. Ganie, Amit J. Jhala
Department of Agronomy and Horticulture: Faculty Publications
A field experiment was conducted to quantify pollen mediated gene flow (PMGF) from glyphosateresistant (GR) to glyphosate-susceptible (GS) giant ragweed under simulated field conditions using glyphosate resistance as a selective marker. Field experiments were conducted in a concentric design with the GR giant ragweed pollen source planted in the center and GS giant ragweed pollen receptors surrounding the center in eight directional blocks at specified distances (between 0.1 and 35 m in cardinal and ordinal directions; and additional 50 m for ordinal directions). Seeds of GS giant ragweed were harvested from the pollen receptor blocks and a total of 100,938 …
Gene Silencing Of Argonaute5 Negatively Affects The
Establishment Of The Legume-Rhizobia Symbiosis,
2017
Universidad Nacional Autonoma de Mexico
Gene Silencing Of Argonaute5 Negatively Affects The Establishment Of The Legume-Rhizobia Symbiosis, Maria Del Rocio Reyero-Saavedra, Zhenzhen Qiao, Maria Del Socorro Sanchez-Correa, M. Enrique Diaz-Pineda, Jose L. Reyes, Alejandra A. Covarrubias, Marc Libault, Oswaldo Valdes-Lopez
Department of Agronomy and Horticulture: Faculty Publications
The establishment of the symbiosis between legumes and nitrogen-fixing rhizobia is finely regulated at the transcriptional, posttranscriptional and posttranslational levels. Argonaute5 (AGO5), a protein involved in RNA silencing, can bind both viral RNAs and microRNAs to control plant-microbe interactions and plant physiology. For instance, AGO5 regulates the systemic resistance of Arabidopsis against Potato Virus X as well as the pigmentation of soybean (Glycine max) seeds. Here, we show that AGO5 is also playing a central role in legume nodulation based on its preferential expression in common bean (Phaseolus vulgaris) and soybean roots and nodules. We also …
Muskmelon Variety Trial In Southwest Indiana — 2016,
2017
Purdue University
Muskmelon Variety Trial In Southwest Indiana — 2016, Wenjing Guan, Dennis Nowaskie
Purdue Fruit and Vegetable Research Reports
This is a compilation of 21 research trial reports from four land-grant universities in the Midwestern United States. Crops include cantaloupe, pickling cucumber, pepper, potato, pumpkin, summer squash and zucchini, sweet corn, tomato, and watermelon. Somecrops were evaluated in high tunnels or hoophouses. Most trials evaluated different cultivars or varieties. One report addressed plant spacing for sweet corn and one addressed soil block for production of tomato seedlings. A list of vegetable seed sources and a list of other online sources of vegetable trial reports are also included.
Watermelon Variety Evaluations In Southwest Indiana, 2016,
2017
Purdue University
Watermelon Variety Evaluations In Southwest Indiana, 2016, Wenjing Guan, Dan Egel, Dennis Nowaskie
Purdue Fruit and Vegetable Research Reports
This is a compilation of 21 research trial reports from four land-grant universities in the Midwestern United States. Crops include cantaloupe, pickling cucumber, pepper, potato, pumpkin, summer squash and zucchini, sweet corn, tomato, and watermelon. Somecrops were evaluated in high tunnels or hoophouses. Most trials evaluated different cultivars or varieties. One report addressed plant spacing for sweet corn and one addressed soil block for production of tomato seedlings. A list of vegetable seed sources and a list of other online sources of vegetable trial reports are also included.
Potassium Applications And Yellow Shoulder Disorder Of Tomatoes In High Tunnels,
2017
Purdue University - Main Campus
Potassium Applications And Yellow Shoulder Disorder Of Tomatoes In High Tunnels, Elizabeth Maynard, Israel S. Calsoya, Jill Malecki
Purdue Fruit and Vegetable Research Reports
Tomatoes grown in unheated high tunnels can suffer significant loss in quality due to yellow shoulder disorder, particularly in susceptible varieties. This paper reports on a preliminary trial to determine whether incidence and severity of the disorder could be influenced by applying potassium fertilizers. Plots with higher leaf potassium content tended to have less fruit with severe yellow shoulder disorder, but increasing the amount of potassium fertilizer applied did not significantly reduce the disorder. From this study it isn’t possible to make specific recommendations for reducing yellow shoulder disorder with potassium applications.
Midwest Vegetable Trial Report For 2016,
2017
Purdue University - Main Campus
Midwest Vegetable Trial Report For 2016, Elizabeth Maynard, Brad Bergefurd
Purdue Fruit and Vegetable Research Reports
This is a compilation of 21 research trial reports from six land-grant universities in the midwestern United States. Crops include dry beans, cantaloupe, cucumber, pepper, pumpkin, sweet corn, summer squash, winter squash, strawberry, tomato, watermelon, and winter melon. Several crops were evaluated in high tunnels or hoop houses. Most trials evaluated different cultivars or varieties. Three reports addressed specific growing practices: the use of poly-coated urea to supply nitrogen to sweet corn, potassium fertilization for high tunnel tomatoes, and use of cereal rye cover crop in butternut squash.
Evaluation Of 11 Bell Pepper Cultivars In Southwest Michigan,
2017
Southwest Michigan Research and Extension
Evaluation Of 11 Bell Pepper Cultivars In Southwest Michigan, Ron Goldy
Midwest Vegetable Trial Reports
No abstract provided.
2016 Evaluation Of Standard Pickling Cucumber Varieties In Kansas,
2017
Kansas State University
2016 Evaluation Of Standard Pickling Cucumber Varieties In Kansas, Stephanie Gruetze, Kimberly Oxley, Cary L. Rivard
Midwest Vegetable Trial Reports
No abstract provided.
Evaluation Of 15 Specialty Pepper Cultivars In Southwest Michigan,
2017
Southwest Michigan Research and Extension
Evaluation Of 15 Specialty Pepper Cultivars In Southwest Michigan, Ron Goldy
Midwest Vegetable Trial Reports
No abstract provided.
2016 Butternut Squash Cereal Rye Cover Crop Tillage And Fertility Trial,
2017
Michigan State University
2016 Butternut Squash Cereal Rye Cover Crop Tillage And Fertility Trial, Ben Phillips
Midwest Vegetable Trial Reports
No abstract provided.
Supersweet Corn Evaluations In Central Kentucky,
2017
University of Kentucky
Supersweet Corn Evaluations In Central Kentucky, Chris Smigell, John Strang, John Snyder
Midwest Vegetable Trial Reports
No abstract provided.
Midwest Vegetable Trial Report For 2016,
2017
Purdue University - Main Campus
Midwest Vegetable Trial Report For 2016, Elizabeth Maynard, Brad Bergefurd
Midwest Vegetable Trial Reports
This is a compilation of 21 research trial reports from six land-grant universities in the midwestern United States. Crops include dry beans, cantaloupe, cucumber, pepper, pumpkin, sweet corn, summer squash, winter squash, strawberry, tomato, watermelon, and winter melon. Several crops were evaluated in high tunnels or hoop houses. Most trials evaluated different cultivars or varieties. Three reports addressed specific growing practices: the use of poly-coated urea to supply nitrogen to sweet corn, potassium fertilization for high tunnel tomatoes, and use of cereal rye cover crop in butternut squash.
Yield Of 17 Summer Squash Varieties In Southwest Michigan,
2017
Southwest Michigan Research and Extension
Yield Of 17 Summer Squash Varieties In Southwest Michigan, Ron Goldy
Midwest Vegetable Trial Reports
No abstract provided.
Winter Melon (Benincasa Hispida) As A New Crop For Southwest Michigan,
2017
Southwest Michigan Research and Extension
Winter Melon (Benincasa Hispida) As A New Crop For Southwest Michigan, Ron Goldy
Midwest Vegetable Trial Reports
No abstract provided.
2016 Evaluation Of Hybrid Bell Pepper Varieties For High Tunnel Production In Kansas,
2017
Kansas State University
2016 Evaluation Of Hybrid Bell Pepper Varieties For High Tunnel Production In Kansas, Kimberly Oxley, David Loewen, Cary L. Rivard
Midwest Vegetable Trial Reports
No abstract provided.
