WorldCat Identities

Serret Molins, M. Dolors

Overview
Works: 6 works in 12 publications in 3 languages and 12 library holdings
Roles: Author
Publication Timeline
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Most widely held works by M. Dolors Serret Molins
Influència dels factors ambientals sobre la fisiologia i l'anatomia de Gardenia jasminoides en la propagació in vitro i l'aclimatització posterior by M. Dolors Serret Molins( Book )

3 editions published between 2001 and 2010 in Catalan and held by 3 WorldCat member libraries worldwide

Salinidad y trigo duro : firmas isotópicas, actividad enzimática y expresión génica by Salima Yousfi( Book )

2 editions published in 2012 in Spanish and Catalan and held by 2 WorldCat member libraries worldwide

Ús d'isòtops estables d'O, H, C com eines de selecció de rendiment potencial i adaptació a la sequera i deficiència de nitrogen en cereals C3 i C4 by Rut Sánchez Bragado( Book )

2 editions published between 2015 and 2016 in Catalan and held by 2 WorldCat member libraries worldwide

A la conca Mediterrània els principals factors que afecten el rendiment dels cultius agrícoles són la sequera i el dèficit de nitrogen. És necessària la recerca de noves eines de fenotipejat per accelerar la millora genètica pel rendiment potencial i l'adaptació dels cultius a condicions limitants. Aquesta Tesi ha estudiat composició isotòpica de carboni ([delta]13C), oxigen ([delta]18O) i hidrogen ([delta]2H), en la seva abundància natural, de diferents cereals. Referent a la [delta]13C només la composició dels grans madurs van mostrar correlacions fenotípiques (negatives) consistents amb el rendiment del gra (GY) en blat dur, sobretot sota condicions d'estrès moderat (Capítol 5). Aquesta Tesi també proposa l'ús de la [delta]13C com una aproximació per quantificar la contribució relativa dels diferents òrgans de la planta a l'ompliment del gra (Capítols 1 i 2). L'objectiu es poder emprar la [delta]13C per seleccionar cereals amb una major fotosíntesi de l'espiga. En blat dur l'aproximació de la [delta]13C va assignar un paper més gran a l'espiga (tant de l'òrgan sencer com de les arestes) en comparació a la fulla bandera i al peduncle (que representa els assimilats que provenen de les parts inferiors de l'espiga), especialment en les varietats antigues, amb independència de les condicions de creixement. Sota bones condicions agronòmiques, la contribució de les arestes de l'espiga a l'ompliment del gra de blat fariner també va ser més important que la de la fulla bandera. Finalment aquesta aproximació basada en la [delta]13C de diferents parts de planta es va comparar amb altres aproximacions convencionals com són l'ombrejat o l'aplicació de l'herbicida DCMU a la planta (Capítol 3). Els tractaments d'ombrejat de l'espiga i de la tija van contribuir de forma similar a l'ompliment del gra. Per contra, l'aproximació del DCMU va assignar un paper major a la fotosíntesi de la tija, però l'aplicació de l'herbicida a la tija també va afectar l'espiga, esbiaixant el pes final dels grans. Aquesta Tesi també va estudiar l'isòtop d'oxigen tant en blat de moro (Capítol 4) com en blat dur (Capítol 5). En el blat de moro, les correlacions genotípiques entre la [delta]18O i el GY van ser marginals, tot i que les sedes va ser l'òrgan que millor va correlacionar amb el GY. En el blat dur les correlacions fenotípiques entre la [delta]18O dels grans i el GY també van ser marginals. Només va correlacionar fortament la [delta]18O de l'aigua de la fulla quan es van combinar els dos règims hídrics (reg suplementari i sequera). L'absència de correlacions de la [delta]18O podria ajudar a descartar els teixits de les plantes que són més susceptibles als processos de fraccionament post-fotosintètic. Escollir l'òrgan idoni pot ajudar a millorar l'ús de la [delta]18O com a eina de millora de cultius. Per últim es va comparar la [delta]13C i la [delta]18O amb la [delta]2H (Capítol 5). La [delta]2H en els grans de blat dur va correlacionar contra el GY millor que els altres dos isòtops en condicions de sequera però combinant nivells de nitrogen contrastats. També es van observar correlacions genotípiques entre la [delta]2H dels foto-assimilats de l'espiga contra el GY. A més, la [delta]2H de les fulles va correlacionar més amb la [delta]13C que no pas amb la [delta]18O, el que suggereix que la [delta]2H dels foto-assimilats de la fulla no només està afectada per la transpiració i la conductància estomàtica sinó també per les reaccions fotosintètiques. A més, els valors baixos de la [delta]2H a l'espiga comparats amb els dels grans donen suport al paper fotosintètic de l'espiga, el que recolza els resultats obtinguts en els Capítols 1, 2 i 3
Physiological traits associated with recent advances in yield of Chinese wheat = Rasgos fisiològicos asociados con los recientes avances en el rendimiento del trigo chino by Bangwei Zhou( )

2 editions published between 2014 and 2015 in English and held by 2 WorldCat member libraries worldwide

China represents around 20% of world population and this proportion will remain similar in the coming decades, whereas an improvement in diet will increase the consumption of wheat. Although wheat grain yields have been increasing in the last three decades, the challenges of feeding nearly 1.4 billion people will be significant in the next few decades. To satisfy this demand, it is paramount to study what agronomical and physiological traits may contribute to higher yield potential in wheat. Towards this goal, wheats from Henan Province, which is one of the wheat baskets of China, have been studied in this thesis. The objectives of this study were to identify the combination of agronomical, morphological and physiological traits that have contributed to the substantial improvements in yield potential of recently released Chinese winter wheats and to test phenotypical approaches that may help to speed further breeding advances in Chinese wheats. The yield potential of modern Chinese genotypes has grown as a result of an increase in harvest index (HI), grain number per unit area, and total above-ground biomass, whereas thousand kernel weight has been less affected. By contrast, most of the high yield genotypes are moderately adapted to stress conditions and highly susceptible to yellow rust strains in high-yielding Mediterranean conditions, indicating that stress adaptation has not been a priority in recent Chinese breeding for yield potential conditions. The stress adapted " ideotype" consists of taller plants with a higher green aerial biomass, particularly during the reproductive stage, together with a better water status, the capacity to take up water during grain filling and a higher nitrogen use efficiency that is related to a more efficient uptake and utilization of N fertilizer. Moreover, the net photosynthesis (Pn) and stomatal conductance (gs) in flag leaves do not appear to be related to increases in yield potential, while total CO2 fixed by the whole ear appears to have a clear role in the yield increase. Studies of carbon ([delta]13C) and oxygen ([delta]18O) isotope composition have suggested that higher water use efficiency is involved in raising yield potential. However, such an increase was not achieved through a decrease in gs. By contrast, the high yield potential genotypes have higher nitrogen use efficiency (NUE), N remobilization capacity and uptake capacity during grain filling. These improvements were achieved by optimizing the ear N source/sink balance, which is mainly the result of N released from Rubisco degradation during grain filling. Besides detecting the physiological traits contributing to raising yield potential, testing for effective phenotyping tools to assess stress tolerance is important in breeding. This is the case for biotic stresses, such as yellow rust, where the use of low cost phenotyping approaches may help to select rust tolerance in the breeding pipeline. The use of conventional (i.e. red/blue/green, RBG) images provided an affordable approach to detect genotypic tolerance to yellow rust. Some colour characteristics, including hue, green fraction, greener fraction, a, and u have proved to be more efficient than other more conventional phenotyping approaches
Novel phenotyping and monitoring approaches to assess cereal performance under abiotic stress conditions Nuevos enfoques de fenotipeado y monitoreo de cultivos para evaluar el rendimiento de cereales cultivados en diferentes condiciones de estrés abiótico by Abdelhalim Khaled Elazab( )

2 editions published in 2015 in English and held by 2 WorldCat member libraries worldwide

Cereals are the basis of the normal diet in most Mediterranean countries and it is estimated that they account for 35-50% of the regional populations' dietary energy consumption. Water deficit is the main constraint limiting cereal productivity in the Mediterranean regions. Crop management and breeding may improve the performance of cereals under such stress conditions. However, the lack of efficient tools to monitor the performance of agronomical practices or to undertake appropriate phenotyping in breeding programs limits the efficiency of both avenues. Novel tools to monitor the cereals (durum wheat and maize) performance in the thesis are: 1. Stable isotopes In C3 plants the carbon isotope composition ([delta]13C) measured in plant tissues is considered as one of the most promising secondary traits in wheat (and other C3 cereals) when breeding for drought resilience. The [delta]13C has been reported to negatively correlate with Ci/Ca (the ratio of leaf intercellular to ambient CO2 concentration) and positively correlated with A/E (the ratio of net assimilation to water evaporated from the transpiring organs). Therefore, the [delta]13C is positively related to WUE, which is considered as the biomass produced per unit of water transpired. Correlations between [delta]13C and GY and/or aerial biomass (AB) may be either negative or positive according to the plant tissue sampled and environmental conditions tested. In the case of a C4 plant like maize, variations in the [delta]13C in response to water conditions are small in compared to C3 plants like wheat, but they are still adequate for use in maize as an indicator of water conditions during growth. The oxygen isotope composition ([delta]18O) of plant tissues is known to reflect the evaporative conditions throughout the crop cycle and thus it has been proposed as a proxy method for measuring transpiration as well as an indicator of genotypic differences in stomatal conductance (gs) in C3 and C4 plants. 2. Root traits Plant roots are the key organs in the plant responsible for the absorption of water and nutrients. Concerning root traits, their response to drought stress is still a challenging subject for research. The laborious work required for the study of the root system has prevented the adoption of root characteristics as routinely phenotyping traits for crop breeding. The root weight density (RWD) and root length density (RLD) are frequently used in root studies to describe the root weight and root length, respectively, within a soil volume and they reflect the capacity of roots to extract water and nutrients. The specific root length (SRL) is considered another of the most important and commonly measured morphological traits. Previous studies showed that a high SRL facilitates nutrient uptake in low-nutrient environments and makes plants more competitive for soil nutrient uptake. 3. The use of proximal (remote) sensing The assessment of AB is important for monitoring crop growth because it could reflect the effect of stresses on crop growth and senescence. Thus, a number of studies have revealed that spectral reflectance techniques have the potential to provide precise, non-destructive instantaneous quantitative estimates of AB. The Normalized Difference Vegetation Index (NDVI) has been used as an indicator of AB and GY in cereals. In recent years the use of digital Red-Green-Blue (RGB) images has been proposed as an alternative to develop vegetation indices that may replace spectroradiometrical based NDVI. The price, size, and the easy use of conventional digital cameras make them viable alternatives to assess AB and GY in cereals. A number of studies have used digital RGB imaging to measure different colour parameters such as: greenness; intensity of green, red and blue; and derived normalized indices from the green, red and blue bands
Increasing genotypic productivity in post Green Revolution durum wheat : the case of Spain by Fadia Chairi( )

1 edition published in 2019 in English and held by 1 WorldCat member library worldwide

 
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Alternative Names
Maria Dolors Serret wetenschapper

Serret, M. Dolors

Serret Molins, María Dolores

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