CIMMYT Maize Line genotypic profiles generated through genotyping-by-sequencing

XUECAI ZHANG (2016, [Dataset])

CIMMYT Maize Lines (CMLs) are the elite inbred lines released by CIMMYT to collaborators around the world and to the general puiblic each year. Genetic fingerprints of 538 CML lines were generated by genotyping-by-sequencing at the Genomic Diversity Facility at Cornell University along with the fingerprints of 6 elite temperate lines (Mo17, Oh43, B37, B73, B84, and C103).

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

Supplemental Materials for The Relative Efficiency of Three Constrained Multistage Linear Phenotypic Selection Indices

Jose Crossa (2018, [Dataset])

This dataset provides supplemental information related to an investigation of constrained multistage linear phenotypic selection indices.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

14th Semi-Arid Wheat Yield Trial Marker-Assisted Selection Data

Susanne Dreisigacker (2015, [Dataset])

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CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

Analysis of adoption of conservation agriculture practices in southern Africa: mixed-methods approach

Adane Tufa Hambulo Ngoma Paswel Marenya Christian Thierfelder (2023, [Artículo])

In southern Africa, conservation agriculture (CA) has been promoted to address low agricultural productivity, food insecurity, and land degradation. However, despite significant experimental evidence on the agronomic and economic benefits of CA and large scale investments by the donor community and national governments, adoption rates among smallholders remain below expectation. The main objective of this research project was thus to investigate why previous efforts and investments to scale CA technologies and practices in southern Africa have not led to widespread adoption. The paper applies a multivariate probit model and other methods to survey data from 4,373 households and 278 focus groups to identify the drivers and barriers of CA adoption in Malawi, Zambia, and Zimbabwe. The results show that declining soil fertility is a major constraint to maize production in Zambia and Malawi, and drought/heat is more pronounced in Zimbabwe. We also find gaps between (a) awareness and adoption, (b) training and adoption, and (c) demonstration and adoption rates of CA practices in all three countries. The gaps are much bigger between awareness and adoption and much smaller between hosting demonstration and adoption, suggesting that much of the awareness of CA practices has not translated to greater adoption. Training and demonstrations are better conduits to enhance adoption than mere awareness creation. Therefore, demonstrating the applications and benefits of CA practices is critical for promoting CA practices in all countries. Besides, greater adoption of CA practices requires enhancing farmers’ access to inputs, addressing drudgery associated with CA implementation, enhancing farmers’ technical know-how, and enacting and enforcing community bylaws regarding livestock grazing and wildfires. The paper concludes by discussing the implications for policy and investments in CA promotion.

Adoption Focus Group Discussion CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CONSERVATION AGRICULTURE CLIMATE CHANGE

Core partners kick-off meeting─Ukama Ustawi (UU): Diversification for Resilient Agrifood systems in East and Southern Africa (ESA)

Evan Girvetz Christian Thierfelder Iddo Dror (2022, [Objeto de congreso])

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA AGRICULTURE FOOD SYSTEMS DIVERSIFICATION RESILIENCE

Wheat seed demand assessment assisted by genotyping in Ethiopia

Moti Jaleta Kindie Tesfaye Olaf Erenstein (2023, [Artículo])

This study examines the extent to which wheat varieties supplied by the formal seed system align with the varieties demanded and used by farmers in Ethiopia. The framework of stated and revealed preferences drawn from the consumer preference theory is used to analyze farmer demand for different wheat varieties. We used official data from the formal seed sector and representative survey data from wheat farm households in Ethiopia. The survey data allow to contrast the farmer reported varietal use with genotyping by sequencing (also known as DNA fingerprinting). Farmers' reliance on informal seed sources and own saved seed, among others, contributes to the misidentification of the varieties they grow. Consequently, farmers are likely to misinform the formal seed demand assessment leading to either an over- or underestimation of actual seed demand for specific wheat varieties. Genotyping by sequencing, as opposed to farmer reports, established the persistence of old varieties. This also implies vulnerability of wheat production to disease dynamics depending on the longevity of disease resistance by the variety in use. Apart from narrowing the gap between the actual and stated demand and ensuring timely replacement of wheat varieties, genotyping-assisted estimates can save seed carry-over cost. Genotyping by sequencing is increasingly used as the new benchmark and gold standard for identifying and tracking the adoption of crop varieties. The technique has potential to enhance the performance of the seed sector through effective planning that can optimize resource commitments and accelerate the rate of varietal replacement.

Seed Demand Varietal Replacement CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA GENOTYPING-BY-SEQUENCING SEEDS WHEAT

Performances of three-way cross hybrids over their respective single crosses and related heterosis of maize (Zea mays L.) hybrids evaluated in Ethiopia

Dagne Wegary Gissa Amsal Tarekegne (2023, [Artículo])

Three-Way Crosses Single-Crosses Better and Mid-Parent Heterosis CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA CROSS-BREEDING HYBRIDS HETEROSIS MAIZE

Los valores egocéntricos desfavorecen el comportamiento pro-ambiental de los guías de buceo en el Parque Nacional Arrecifes de Cozumel

The egocentric values disfavor the pro-environmental behavior of the diving guides in the Arrecifes de Cozumel National Park

SANDRA BEATRIZ CHAN CHAN AURORA IRMA MAYNEZ GUADERRAMA ALEJANDRO LUIS COLLANTES CHAVEZ COSTA LUIS CARLOS SANTANDER BOTELLO (2019, [Artículo])

El buceo como actividad turística ha potencializado la economía, pero también ha impactado a las zonas arrecifales. Durante el buceo, el guía es el principal actor en la protección del ambiente marino, pues en él recae el control de las actividades realizadas por los buzos. En esta investigación se analiza la relación entre los valores, creencias y normas sobre la intensión que tienen los guías de buceo por conservar el ambiente marino. El estudio se abordó a través de la teoría de Valores, Creencias y Normas (VCN) y fue analizado a través de modelos de ecuaciones estructurales con el método de Partial Least Squares. Se confirma la causalidad del modelo VCN y se identifica que la valoración de los recursos marinos podría estar influenciada por los valores egocéntricos lo cual no permitió la concepción de una intención de un comportamiento que sea favorable.

Diving as a touristic activity has boosted the economy, but it has also impacted the reef areas. During this activity, the guide is the main actor in the protection of the marine environment, since he has the control of the activities carried out by the divers. This research analyzes the relationship between values, beliefs and norms about the intension of diving guides to preserve the marine environment. The study was approached through the theory of Values, Beliefs and Norms (VCN) and was analyzed through structural equation models with the method of Partial Least Squares. The causality of the VCN model is confirmed, and it is identified that the valuation of the marine resources could be influenced by the egocentric values, which did not allow the conception of an intention of a favorable behavior.

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA Intención Área natural protegida Problemáticas ambientales Actividad turística Intention Protected areas Environmental issues Tourism

Diagnóstico del proceso actual de elaboración de mezcal en la empresa "Laguna Seca" y alternativas para mejorar su eficiencia

CYNTHIA ZAMORA PEDRAZA (2012, [Tesis de doctorado])

Mezcal es el nombre genérico que reciben los aguardientes obtenidos de la fermentación de los jugos azucarados extraídos de las cabezas o piñas (tallos y bases de pencas), maduras y cocidas, de los magueyes nativos de algunas regiones áridas y semiáridas de México. Agave salmiana Otto ex Salm-Dyck es el maguey silvestre más abundante en el altiplano potosino zacatecano donde es utilizado principalmente para la elaboración del mezcal. Esta región cuenta con la Denominación de Origen “Mezcal”. En el altiplano potosino se ha reconocido la existencia de tres épocas funcionales del año (épocas seca, lluviosa y fría), las cuales repercuten sobre la suculencia y riqueza de azúcares y saponinas del maguey recolectado para elaborar mezcal.

El proceso de elaboración del mezcal, ya sea en forma artesanal o semi-industrial, se inicia en el campo con la selección y recolección del maguey, seguido de la cocción, molienda, fermentación y finalmente la destilación...

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA

Alternativas para el desarrollo rural sostenible en tres zonas cafetaleras indígenas de México

Pedro Pablo Ramos Pérez (2016, [Tesis de doctorado])

CIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA