Examinando por Autor "Buchaillot, Maria Luisa"
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- PublicaciónSólo datosCrop phenotyping in a context of Global Change: what to measure and how to do it(Journal of Integrative Plant Biology, 2022-01-01) Araus, Jose Luis; Kefauver, Shawn Carlisle; Vergara‐Díaz, Omar; Gracia‐Romero, Adrian; Zahra Rezzouk, Fatima; Segarra, Joel; Buchaillot, Maria Luisa; Chang‐Espino, Melissa; Vatter, Thomas; Sanchez‐Bragado, Rut; Fernandez‐Gallego, José Armando; Serret, Maria Dolores; Bort, JordiHigh‐throughput crop phenotyping, particularlyunderfield conditions, is nowadays perceivedas a key factor limiting crop genetic advance.Phenotyping not only facilitates conventionalbreeding, but it is necessary to fully exploit thecapabilities of molecular breeding, and it can beexploited to predict breeding targets for the yearsahead at the regional level through more ad-vanced simulation models and decision supportsystems. In terms of phenotyping, it is necessaryto determined which selection traits are relevantin each situation, and which phenotyping tools/methods are available to assess such traits. Re-mote sensing methodologies are currently themost popular approaches, even when lab‐basedanalyses are still relevant in many circumstances.On top of that, data processing and automation,together with machine learning/deep learning arecontributing to the wide range of applications forphenotyping. This reviewaddresses spectral andred–green–blue sensing as the most popular re-mote sensing approaches, alongside stable iso-tope composition as an example of a lab‐basedtool, and root phenotyping, which represents oneof the frontiers forfield phenotyping. Further, weconsider the two most promising forms of aerialplatforms (unmanned aerial vehicle and satellites)and some of the emerging data‐processingtechniques. The review includes three Boxesthat examine specificcasestudies.
- PublicaciónSólo datosHeterosis and reciprocal effects for physiological and morphological traits of popcorn plants under different water conditions(Agricultural Water Management, 2022-01-03) Kamphorst, Samuel Henrique; Amaral Júnior, Antônio Teixeira do; Vergara-Diaz, Omar; Gracia-Romero, Adrian; Fernandez-Gallego, Jose A.; Chang-Espino, Melissa Carolina; Buchaillot, Maria Luisa; Rezzouk, Fatima Zahra; Lima, Valter Jário de; Serret, Maria Dolores; Ortega, Jose Luis ArausIn spite of the benefits of heterosis in maize breeding, little is known about the physiological mechanisms of this phenomenon and its genetic control under different water regimes. This study aimed to understand the heterosis effects on plant growth, the photosynthetic and transpiration traits, and the root traits of four inbred popcorn lines and their hybrids, including their reciprocal combinations. Plants were grown in lysimeters, inside a rain shelter, under two water conditions (water stress – WS; well-watered – WW) until anthesis. Plant growth traits included shoot biomass, plant height, and leaf area. Photosynthetic traits comprised leaf pigment and total nitrogen content, chlorophyll fluorescence, gas exchange, water use efficiency and stomatal index and density, along with the stable carbon (δ13C) and nitrogen (δ15N) isotope compositions of the last developed leaf. Root weight density and specific root length were also recorded. Greater heterosis effects were observed for traits related to plant growth and root weight density, and specifically under WS. Traits related to root weight density in deeper soil layers benefited markedly from heterosis, but there were no advantages in terms of stomatal conductance and water status in general. Apparently, only δ13C supported a better water status under WS, and was observed in the hybrids in particular. Non-additive gene effects were predominant in controlling of most of the growth and root traits studied, supporting the conclusion that the heterosis effect is especially favorable under water-limiting conditions. Moreover, the choice of the female parent is essential for traits related to gas exchange when breeding for better resilience to drought.