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You searched for: Subject term developmental stages Remove constraint Subject term: developmental stages Subject term crops Remove constraint Subject term: crops
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1. A 2-year field trial reveals no significant effects of GM high-methionine soybean on the rhizosphere bacterial communities

Author:
Jingang Liang; Yue Jiao; Ying Luan; Shi Sun; Cunxiang Wu; Haiying Wu; Mingrong Zhang; Haifeng Zhang; Xiaobo Zheng; Zhengguang Zhang
Source:
World journal of microbiology & biotechnology 2018 v.34 no.8 pp. 113
ISSN:
0959-3993
Subject:
bacteria; bacterial communities; community structure; crops; cultivars; developmental stages; field experimentation; financial economics; plant growth; rhizosphere; ribosomal RNA; soil; soil microorganisms; soybeans; transgenic plants
Abstract:
... Genetically modified (GM) crops have brought various economic benefits but may also have adversely affected soil microorganisms. To examine whether transgenic high-methionine soybean ZD91 alters the bacterial community structure in the rhizosphere, we performed a 2-year follow-up study using the transgenic high-methionine soybean cultivar ZD91 and wild type cultivar ZD. The community composition a ...
DOI:
10.1007/s11274-018-2495-7
PubMed:
29987404
PubMed Central:
PMC6096554

2. 3D model processing for high throughput phenotype extraction – the case of corn

Author:
Dimitris Zermas; Vassilios Morellas; David Mulla; Nikos Papanikolopoulos
Source:
Computers and electronics in agriculture 2020 v.172 pp. 105047
ISSN:
0168-1699
Subject:
Zea mays; automation; cameras; canopy; corn; corn stover; crops; data collection; developmental stages; industry; leaf area index; leaf length; leaves; models; phenotype; plant height; statistics; stems; unmanned aerial vehicles
Abstract:
... High resolution RGB imagery collected using a UAV and a handheld camera was used with structure from motion to reconstruct 3D canopies of small groups of corn plants. A methodology for the automated extraction of phenotypic characteristics of individual plants is presented based on these 3D reconstructed canopies. Such information can enhance the evaluation of crop traits and provide accurate and ...
DOI:
10.1016/j.compag.2019.105047

3. The ABA signal transduction mechanism in commercial crops: learning from Arabidopsis

Author:
Giora Ben-Ari
Source:
Plant cell reports 2012 v.31 no.8 pp. 1357-1369
ISSN:
0721-7714
Subject:
Arabidopsis thaliana; abiotic stress; abscisic acid; crop yield; crops; developmental stages; genetic engineering; plant development; plant proteins; plant response; protein kinases; receptors; signal transduction
Abstract:
... The phytohormone abscisic acid (ABA) affects a wide range of stages of plant development as well as the plant’s response to biotic and abiotic stresses. Manipulation of ABA signaling in commercial crops holds promising potential for improving crop yields. Several decades of research have been invested in attempts to identify the first components of the ABA signaling cascade. It was only in 2009, t ...
DOI:
10.1007/s00299-012-1292-2
PubMed:
22660953

4. AFLP-based transcript profiling for cassava genome-wide expression analysis in the onset of storage root formation

Author:
Sojikul, Punchapat; Kongsawadworakul, Panida; Viboonjun, Unchera; Thaiprasit, Jittrawan; Intawong, Burapat; Narangajavana, Jarunya; Svasti, Mom Rajawong Jisnuson
Source:
Physiologia plantarum 2010 v.140 no.2 pp. 189-298
ISSN:
0031-9317
Subject:
protein synthesis; biosynthesis; amplified fragment length polymorphism; cassava; fibrous roots; developmental stages; transporters; early development; reverse transcriptase polymerase chain reaction; starch; gene expression; tubers; potatoes; genes; leaves; gene expression regulation; roots; Manihot esculenta
Abstract:
... Cassava (Manihot esculenta Crantz) is a root crop that accumulates large quantities of starch, and it is an important source of carbohydrate. Study on gene expressions during storage root development provides important information on storage root formation and starch accumulation as well as unlock new traits for improving of starch yield. cDNA-Amplified Fragment Length Polymorphism (AFLP) was used ...
DOI:
10.1111/j.1399-3054.2010.01389.x
PubMed:
20536786

5. Ability for In-Season Correction of Nitrogen Deficiency in Corn Using Chlorophyll Meters

Author:
Gary E. Varvel; James S. Schepers; Dennis D. Francis
Source:
Soil Science Society of America journal 1997 v.61 no.4 pp. 1233-1239
ISSN:
0361-5995
Subject:
Zea mays; chlorophyll; corn; crops; developmental stages; fertilizer application; fertilizer requirements; groundwater; groundwater contamination; irrigated farming; irrigation; leaching; monitoring; nitrate nitrogen; nitrogen; nitrogen fertilizers; nutrient use efficiency; soil; United States
Abstract:
... Nitrate-nitrogen contamination of groundwater continues to be a major concern throughout the USA. These concerns are greatest in areas where groundwater is close to the soil surface and in areas that have irrigated crops with large N fertilizer requirements. Specific objectives of this work were to use the chlorophyll meter to determine in-season crop N status and to correct in-season N deficienci ...
DOI:
10.2136/sssaj1997.03615995006100040032x

6. Acclimation to higher VPD and temperature minimized negative effects on assimilation and grain yield of wheat

Author:
Muhammad Adil Rashid; Mathias Neumann Andersen; Bernd Wollenweber; Xiying Zhang; Jørgen Eivind Olesen
Source:
Agricultural and forest meteorology 2018 v.248 pp. 119-129
ISSN:
0168-1923
Subject:
flowering; acclimation; drought; wheat; stomatal conductance; heat stress; water stress; grain yield; yield components; photosynthesis; leaves; cultivars; carboxylation; heat; leaf area; net assimilation rate; climate change; soil water; temperature; climatic factors; ribulose-bisphosphate carboxylase; evapotranspiration; water use efficiency; crops
Abstract:
... Adapting to climate change and minimizing its negative impact on crop production requires detailed understanding of the direct and indirect effects of different climate variables (i.e. temperature, VPD). We investigated the direct (via heat stress) and indirect effects (through increased VPD) of high temperature on growth, physiology and yield of two wheat cultivars (Taifun and Vinjett) at two wat ...
DOI:
10.1016/j.agrformet.2017.09.018

7. Accumulation of lead and associated metals (Cu and Zn) at different growth stages of soybean crops in lead-contaminated soils: food security and crop quality implications

Author:
Andrés Blanco; María J. Salazar; Carolina Vergara Cid; María L. Pignata; Judith H. Rodriguez
Source:
Environmental earth sciences 2017 v.76 no.4 pp. 182
ISSN:
1866-6280
Subject:
Glycine max; aerial parts; bioaccumulation factor; copper; crop quality; crops; developmental stages; food security; lead; pH; risk; roots; soil texture; soybeans; topsoil; toxicity; zinc
Abstract:
... The Pb, Cu and Zn content, the physicochemical parameters in soils (EC, OM%, soil texture and pH) and the metal accumulation of Glycine max plants at different growth stages were evaluated. Topsoil and soybean samples were collected in the vicinity of a former battery-recycling plant, with the results showing that only the concentrations of Pb in soils corresponding to sites located near to the le ...
DOI:
10.1007/s12665-017-6508-x

8. Accuracy of root modelling and its impact on simulated wheat yield and carbon cycling in soil

Author:
Zhigan Zhao; Enli Wang; Lihua Xue; Yongcheng Wu; Hecang Zang; Xin Qin; Jingting Zhang; Zhimin Wang
Source:
Field crops research 2014 v.165 pp. 99-110
ISSN:
0378-4290
Subject:
soil organic carbon; arid lands; developmental stages; model validation; carbon sequestration; roots; shoots; grain yield; root shoot ratio; climate; irrigated conditions; rooting; root growth; winter wheat; crop management; biomass; crop models; root systems; meta-analysis; nitrogen; soil profiles; crops; China
Abstract:
... Accurate modelling of root biomass and root distribution of crop plants has become increasingly important in order to address issues related to carbon sequestration in soil and resource use efficiency of crops under different environmental and management conditions. However, the performance of crop models for simulating crop root system has been rarely tested in many environments due to lack of de ...
DOI:
10.1016/j.fcr.2014.03.018

9. Actual evapotranspiration and dual crop coefficients for dry-seeded rice and hybrid maize grown with overhead sprinkler irrigation

Author:
Ma. Carmelita R. Alberto; James R. Quilty; Roland J. Buresh; Reiner Wassmann; Sam Haidar; Teodoro Q. Correa; Joseph M. Sandro
Source:
Agricultural water management 2014 v.136 pp. 1-12
ISSN:
0378-3774
Subject:
corn; crop coefficient; crop production; crops; developmental stages; dry season; eddy covariance; evaporation; evapotranspiration; growing season; hybrids; irrigation scheduling; irrigation water; rice; sprinkler irrigation; transpiration
Abstract:
... In lieu of the decreasing availability of water for irrigated rice, we examined two alternatives to traditional rice cultivation on puddled and saturated soil–maize and dry-seeded rice production grown with an overhead sprinkler irrigation system. We characterized the inter-seasonal daily variations of actual crop evapotranspiration (ET), transpiration (T), and evaporation (E) using the eddy covar ...
DOI:
10.1016/j.agwat.2014.01.005

10. Acyrthosiphon pisum (Harris) (Homoptera: Aphididae) feeding preference and performance on cool-season food legumes in northwestern Ethiopia

Author:
Adane Tesfaye; Melaku Wale; Ferdu Azerefegne
Source:
International journal of pest management 2013 v.59 no.4 pp. 319-328
ISSN:
1366-5863
Subject:
Acyrthosiphon pisum; Lathyrus sativus; crops; cultivars; developmental stages; faba beans; grasses; greenhouses; hosts; lentils; peas; pest management; plant growth; Ethiopia
Abstract:
... Pea aphids severely constrain food legume production in Ethiopia. Pea aphid preference and performance on common legume crops (field pea, faba bean, lentil and grass pea) were tested with no-choice, dual- and multiple-choice experiments under greenhouse conditions in northwestern Ethiopia. The results revealed that pea aphids preferred field peas, lentils and grass peas more than faba bean. Growth ...
DOI:
10.1080/09670874.2013.869373

11. Adding value to field-based agronomic research through climate risk assessment: a case study of maize production in Kitale, Kenya

Author:
Dixit, P.N.; Cooper, P.J.M.; Dimes, J.; Rao, K.P.
Source:
Experimental agriculture 2011 v.47 no.2 pp. 317-338
ISSN:
0014-4797
Subject:
developmental stages; crop yield; seasonal variation; plant response; risk; meteorological data; weed control; production technology; rainfed farming; risk assessment; planting; climate models; case studies; climate; simulation models; water management; corn; soil water; temperature; nitrogen; farmers; fertilizers; rain; food production; crops; Kenya
Abstract:
... In sub-Saharan Africa (SSA), rainfed agriculture is the dominant source of food production. Over the past 50 years much agronomic crop research has been undertaken, and the results of such work are used in formulating recommendations for farmers. However, since rainfall is highly variable across seasons the outcomes of such research will depend upon the rainfall characteristics of the seasons duri ...
DOI:
10.1017/S0014479710000773

12. Adverse effect of urease on salt stress during seed germination in Arabidopsis thaliana

Author:
Yuanyuan Bu; Jing Kou; Bo Sun; Testuo Takano; Shenkui Liu
Source:
FEBS letters 2015 v.589 no.12 pp. 1308-1313
ISSN:
0014-5793
Subject:
Arabidopsis thaliana; adverse effects; ammonium compounds; crops; developmental stages; mutants; saline soils; salt stress; salt tolerance; seed germination; seeds; stress tolerance; urea; urease; urease inhibitors
Abstract:
... Seed germination is a critical stage in the development of crops that grow in saline soils. We noticed that seeds of an Arabidopsis urease mutant have significantly increased salt stress tolerance. To understand why, we treated the wild type (WT) with a urease inhibitor and found that its salt stress tolerance was also improved. We hypothesized that urease acting on urea generates NH4+, which prob ...
DOI:
10.1016/j.febslet.2015.04.016

13. Aerial imagery or on-ground detection? An economic analysis for vineyard crops

Author:
Dionisio Andújar; Hugo Moreno; José M. Bengochea-Guevara; Ana de Castro; Angela Ribeiro
Source:
Computers and electronics in agriculture 2019 v.157 pp. 351-358
ISSN:
0168-1699
Subject:
cameras; costs and returns; crops; data collection; developmental stages; economic feasibility; environmental impact; fertilizer application; fertilizers; fungicides; lidar; models; photogrammetry; plant protection; remote sensing; solar radiation; spraying; unmanned aerial vehicles; vegetation; vineyards
Abstract:
... Aerial and on-ground vegetation characterization technologies are continuously evolving. An experiment was conducted in a vineyard field in order to test the economic feasibility of applying fertilizers site specifically based on different mapping systems. The capacity of UAV missions and on-ground systems has been compared using depth cameras or LiDAR systems respectively in order to provide the ...
DOI:
10.1016/j.compag.2019.01.007

14. Aerial multispectral imaging for crop hail damage assessment in potato

Author:
Jianfeng Zhou; Mark J. Pavek; Seth C. Shelton; Zachary J. Holden; Sindhuja Sankaran
Source:
Computers and electronics in agriculture 2016 v.127 pp. 406-412
ISSN:
0168-1699
Subject:
storm damage; image analysis; unmanned aerial vehicles; multispectral imagery; developmental stages; crop damage; rapid methods; regrowth; crop yield; crop losses; potatoes; planting; defoliation; field experimentation; normalized difference vegetation index
Abstract:
... Crop loss assessment after an event of hailstorm can be inaccurate, subjective, and time consuming with the conventional method. Low-altitude, high-resolution aerial imaging using an unmanned aerial vehicle can be utilized for rapid assessment of target crops in a large scale, which can potentially improve the evaluation procedure. The goal of this study was to evaluate the feasibility of rapid an ...
DOI:
10.1016/j.compag.2016.06.019
CHORUS:
10.1016/j.compag.2016.06.019

15. AgriSeqDB: an online RNA-Seq database for functional studies of agriculturally relevant plant species

Author:
Andrew J. Robinson; Muluneh Tamiru; Rachel Salby; Clayton Bolitho; Andrew Williams; Simon Huggard; Eva Fisch; Kathryn Unsworth; James Whelan; Mathew G. Lewsey
Source:
BMC plant biology 2018 v.18 no.1 pp. 200
ISSN:
1471-2229
Subject:
Arabidopsis; barley; bioinformatics; cooperative research; corn; crops; data collection; databases; developmental stages; experts; genes; genomics; rice; sequence analysis; tissues; tomatoes; transcriptome; wheat
Abstract:
... BACKGROUND: The genome-wide expression profile of genes in different tissues/cell types and developmental stages is a vital component of many functional genomic studies. Transcriptome data obtained by RNA-sequencing (RNA-Seq) is often deposited in public databases that are made available via data portals. Data visualization is one of the first steps in assessment and hypothesis generation. However ...
DOI:
10.1186/s12870-018-1406-2
PubMed:
30231853
PubMed Central:
PMC6146512

16. Agricultural Monitoring Using Envisat Alternating Polarization SAR Images

Author:
Mika Karjalainen; Harri Kaartinen; Juha Hyyppä
Source:
Photogrammetric engineering and remote sensing 2008 v.74 no.1 pp. 117-126
ISSN:
0099-1112
Subject:
angle of incidence; biomass; crops; developmental stages; growing season; monitoring; precision agriculture; remote sensing; surveys
Abstract:
...

In agricultural remote sensing, applied images should be acquired frequently enough in order to monitor important crop growth stages. Thanks to the cloud penetrating and flexible swath-positioning capabilities of space-borne SAR at present, images can be acquired even at the interval of few days during a growing season. In this study, dual-polarization (VV/VH) Envisat SAR images with high a ...

DOI:
10.14358/PERS.74.1.117

17. Agronomic and Environmental Soil Phosphorus Testing in Soils Receiving Liquid Swine Manure

Author:
A. M. Atia; A. P. Mallarino
Source:
Soil Science Society of America journal 2002 v.66 no.5 pp. 1696-1705
ISSN:
0361-5995
Subject:
Glycine max; Sus scrofa; Zea mays; anion exchange resins; bioavailability; corn; crops; developmental stages; farmers; iron oxides; liquid manure; phosphorus; pig manure; soil; soybeans; swine; uncertainty; Iowa
Abstract:
... There is uncertainty concerning evaluation of bioavailable P in manured soils. This study assessed P availability in manured Iowa soils by measuring soil P with agronomic and environmental P tests and P uptake by corn (Zea mays L.) and soybean [Glycine max (L.) Merr.]. Soil and plant samples were collected at the V5-V6 growth stage from trials established at nine locations that received various ra ...
DOI:
10.2136/sssaj2002.1696

18. Alfalfa Termination Strategies Determine Subsequent Wheat and Haygrazer Forage Yield and Nutritive Value

Author:
Murali K. Darapuneni; Leonard M. Lauriault; Sangamesh V. Angadi
Source:
Crop, forage & turfgrass management 2019 v.5 no.1 pp. 1-7
ISSN:
2374-3832
Subject:
Medicago sativa; Sorghum bicolor; Triticum aestivum; alfalfa; conventional tillage; crop rotation; crops; developmental stages; forage yield; glyphosate; nutritive value; regrowth; wheat; New Mexico
Abstract:
... Core Ideas The effect of two alfalfa termination methods on subsequent crop forage yield and nutritive value were evaluated. Under better mineralization conditions, tillage termination method showed an advantage in increasing subsequent wheat forage yield at both jointing and boot stages. Spraying glyphosate for the termination of alfalfa achieved 9–18% greater forage yield in subsequent wheat com ...
DOI:
10.2134/cftm2019.05.0034

19. Allelopathy in agro-ecosystems: a critical review of wheat allelopathy-concepts and implications

Author:
Farhena Aslam; Abdul Khaliq; Amar Matloob; Asif Tanveer; Saddam Hussain; Zahir Ahmad Zahir
Source:
Chemoecology 2017 v.27 no.1 pp. 1-24
ISSN:
0937-7409
Subject:
abiotic stress; agroecosystems; allelochemicals; allelopathy; biopesticides; chelation; crops; developmental stages; edaphic factors; exudation; insects; mechanism of action; microorganisms; nutrients; rhizosphere; root exudates; secondary metabolites; soil; soil biota; soil quality; volatilization; weeds; wheat
Abstract:
... Allelopathy is an important mechanism of plant interference mediated by the release of plant-produced secondary metabolites or decomposition products of microbes to the aerial or soil environment. It plays a key role in natural as well as cultivated ecosystems. Allelochemicals are released into the soil rhizosphere by a variety of mechanisms, including volatilization, decomposition of residues, an ...
DOI:
10.1007/s00049-016-0225-x

20. Alternative splicing in plants – coming of age

Author:
Naeem H. Syed; Maria Kalyna; Yamile Marquez; Andrea Barta; John W.S. Brown
Source:
Trends in plant science 2012 v.17 no.10 pp. 616-623
ISSN:
1360-1385
Subject:
alternative splicing; crops; developmental stages; environmental factors; evolution; gene expression; genes; messenger RNA; phenotype; transcription (genetics)
Abstract:
... More than 60% of intron-containing genes undergo alternative splicing (AS) in plants. This number will increase when AS in different tissues, developmental stages, and environmental conditions are explored. Although the functional impact of AS on protein complexity is still understudied in plants, recent examples demonstrate its importance in regulating plant processes. AS also regulates transcrip ...
DOI:
10.1016/j.tplants.2012.06.001
PubMed:
22743067
PubMed Central:
PMC3466422