A5019523844- Rice Cultivation and Yield Improvement
- Crop Yield and Soil Fertility
- Genetics and Plant Breeding
- Genetic Mapping and Diversity in Plants and Animals
- Plant responses to water stress
- GABA and Rice Research
- Plant nutrient uptake and metabolism
- Plant Micronutrient Interactions and Effects
- CRISPR and Genetic Engineering
- Soil Carbon and Nitrogen Dynamics
- Plant Stress Responses and Tolerance
- Agronomic Practices and Intercropping Systems
- Agricultural Innovations and Practices
- Genetically Modified Organisms Research
- Plant responses to elevated CO2
- Livestock and Poultry Management
- Agricultural Research and Practices
- Plant Molecular Biology Research
- Agriculture Sustainability and Environmental Impact
- Plant tissue culture and regeneration
- Agriculture, Plant Science, Crop Management
- Bioenergy crop production and management
- Plant Virus Research Studies
- Wheat and Barley Genetics and Pathology
- Plant Genetic and Mutation Studies
Corteva (United States)
2018-2021
Pioneer Hi-Bred
2008-2017
International Rice Research Institute
1999-2009
University of Utah
2003
Centro Internacional de Mejoramiento de Maíz Y Trigo
1988-1999
University of California, Davis
1987-1988
University of California System
1988
Maize ARGOS8 is a negative regulator of ethylene responses. A previous study has shown that transgenic plants constitutively overexpressing have reduced sensitivity and improved grain yield under drought stress conditions. To explore the targeted use native expression variation in drought-tolerant breeding, diverse set over 400 maize inbreds was examined for mRNA expression, but levels all lines were less than created original events. We then employed CRISPR-Cas-enabled advanced breeding...
ABSTRACT Drought is a major cause of yield loss in rain-fed rice (Oryza sativa L.), grown on over 40 million ha Asia. The objective this study was to evaluate the effectiveness direct selection for under drought stress upland populations derived from crosses between irrigated high-yielding cultivars and upland-adapted cultivars. Random F2:4 lines five were screened grain fully lowland fields nonstress conditions uplands severe reproductive-stage stress. Stress caused mean reduction 64%...
Lack of sufficient water is a major limiting factor to crop production worldwide, and the development drought-tolerant germplasm needed improve productivity. The phytohormone ethylene modulates plant growth as well response abiotic stress. Recent research has shown that modifying biosynthesis signaling can enhance drought tolerance. Here, we report novel negative regulators signal transduction in Arabidopsis (Arabidopsis thaliana) maize (Zea mays). These are encoded by ARGOS gene family. In...
Drought is common in tropical environments, and selection for drought tolerance one way of reducing the impacts water deficit on crop yield. The primary objective this study was to evaluate biomass, grain yield, harvest index maize ( Zea mays L.) populations selected tolerance. Three late‐maturing were subjected three cycles S 1 recurrent (‘La Posta Sequía’ ‘Pool 26 Sequıa’ ) or eight full‐sib (‘Tuxpeño Sequía’) yield traits indicative during flowering filling. Selection gains assessed five...
Abstract Rice is used as a model cereal to study drought response at the molecular level, with goal of applying results other cereals. To assess relevance from rice species, kinetics development and plant tolerant susceptible tropical ( Oryza sativa L.) subtropical wheat Triticum aestivum cultivars were compared under vegetative reproductive stage in pot experiments. Water was withheld during until available soil moisture content 30 % field capacity (FC) or leaf wilting observed, then...
It is not known whether selection for improved tolerance to a specific abiotic stress leads correlated changes in performance under other stresses. Drought and N deficiency are important constraints production the tropics. We examined effect of drought on tropical maize ( Zea mays L.) range levels. Original advanced selections four populations, midseason two eight recurrent cycles each, were evaluated experiments severe stress, one experiment medium well‐fertilized experiments. Nitrogen...
Consideration of secondary traits could improve selection efficiency under stress conditions. This study assesses the value for improving lowland tropical maize ( Zea mays L.) low‐N target environments. Nineteen experiments grown with no N applied at CIMMYT, México, between 1986 and 1995 were analyzed grain yield, anthesis‐silking intervai (ASI), number ears per plant, leaf chlorophyll concentration, an estimate senescence. Broad‐sense heritabilities traits, genetic correlations predicted...
Most high-yielding rice cultivars developed for irrigated conditions, including the widely grown lowland variety IR64, are highly susceptible to drought stress. This limits their adoption in rainfed environments where there is a risk of water shortage during growing season. Mapping studies using lowland-by-upland populations have provided limited information about genetic basis variation yield under drought. One approach simultaneously improve and understand tolerance generate backcross...
Most maize ( Zea mays L.) in the tropics is grown under low‐nitrogen (N) conditions, raising need to assess efficient breeding strategies for such conditions. This study assesses value of low‐N vs. high‐N selection environments improving lowland tropical target environments. Fourteen replicated trials low (no N applied) and high (200 kg Ha − 1 at CIMMYT, México, between 1986 1995 were analyzed broad‐sense heritability grain yield, genetic correlation yields N, predicted response yield either...
A pressure chamber and a root probe technique have been used to measure hydraulic conductivities of rice roots (root Lp(r) per m(2) surface area). Young plants two (Oryza sativa L.) varieties (an upland variety, cv. Azucena lowland IR64) were grown for 31-40 d in 12 h days with 500 micromol m(-2) s(-1) PAR day/night temperatures 27 degrees C 22 C. Root was measured under conditions steady-state transient water flow. Different growth (hydroponic aeroponic culture) did not cause visible...
• Sustainable agriculture is complex and includes multiple interdependent goals. Sound science innovation are the keys to sustainable agriculture, already delivering results. Greater investment needed in basics of agronomy, biotechnology, plant breeding ensure that farmers consumers everywhere benefit from technology. Farmers must receive support for implementing sustainability measures, especially light downward trend commodity prices.
Drought stress is one of the main environmental problems encountered by crop growers. Reduction in arable land area and reduced water availability make it paramount to identify develop strategies allow crops be more resilient water-limiting environments. The plant hormone abscisic acid (ABA) plays an important role plants' response drought through its control stomatal aperture transpiration, transgenic modulation ABA levels therefore represents attractive avenue improve tolerance crops....