Oryza punctata Kotschy ex Steud. (BB, 2n = 24) is a wild species of rice that has many useful agronomic traits. An interspecific hybrid (AB, 2n = 24) was produced by crossing O. punctata and Oryza sativa variety Punjab Rice 122 (PR122, AA, 2n = 24) to broaden the narrow genetic base of cultivated rice. Cytological analysis of the pollen mother cell...
Background: To explore poorly understood differences between primary and subsequent somatic embryogenic lines of plants, we induced secondary (2ry) and tertiary (3ry) lines from cotyledonary somatic embryos (SEs) of two Douglas-fir genotypes: SD4 and TD17. The 2ry lines exhibited significantly higher embryogenic potential (SE yields) than the 1ry l...
Douglas-fir (Pseudotsuga menziesii (Mirb) Franco) is a native conifer from the Pacific North-West of the US and Canada, and is one of the most important timber species used in the world. Douglas-fir is highly productive in a range of climatic conditions and has valuable wood properties (quality) as well as a strong tolerance to diseases and insects...
Ectomycorrhizal (ECM) association can improve plant phosphorus (P) nutrition. Polyphosphates (polyP) synthesized in distant fungal cells after P uptake may contribute to P supply from the fungus to the host plant if they are hydrolyzed to phosphate in ECM roots then transferred to the host plant when required. In this study, we addressed this hypot...
Dans cet article, nous présentons une approche basée sur des réseaux de neurones convolutionnels multi-échelle (MCNN) pour la classification de cellules. Basée sur plu-sieurs réseaux profonds convolutionnels agissant à dif-férentes résolutions, l'architecture proposée évite l'étape classique d'extraction manuelle de caractéristiques, en procédant à...
A brief look at the animal and plant kingdom shows a large variety of spatial patterns like the periodic stripes of zebras and the arrangement of flower petals. Interestingly, a microscopic look at tissues and single cells reveals very well structured organisations at smaller length scales as well. In this thesis I provide mechanistic insights into...
Noguero, MélanieVerdier, JérômeLe Signor, ChristineAubert, GregoireVernoud, VanessaGallardo Guerrero, KarineThompson, Richard
Dans un contexte actuel qui tend vers une réduction d’intrants dans les systèmes de culture et une relance de la production de protéines végétales, la culture des légumineuses constitue une alternative fondamentale à prendre en compte car elles constituent une source riche en protéines pour l’alimentation animale et humaine. Il est donc important d...