Oula Ghannoum

Adapting SAM3 for 3D fruit counting with cross-view contrastive learning and Hough voting

Kai Zhao, Chenchen Kang, Suzy Rogiers, Oula Ghannoum et autres

Fruit detection and 3D localization have been shown to be critical for precision agriculture applications, such as yield estimation and robot harvesting tasks. However, real-world agricultural settings can be associated with high density of fruits, strong occlusions, and variable illumination, leading to …

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CO2 response curves of net CO2 assimilation rate (A/Ci curves) from 74 C4 species grown and measured at various environmental conditions

Yuzhen Fan, Daniel W. A. Noble, Belinda E. Medlyn, Russell K. Monson et autres

1696 CO2 response curves of net CO2 assimilation rate (A/Ci curves) from 74 C4 species of 12 families grown and measured under various environmental conditions were collated from 52 published studies. Licor-6400 or LI-COR 6800 were used to collect these data in …

HiMamba-Net: a Hilbert-serialized Mamba network for 3D point cloud instance segmentation

Kai Zhao, Dai Shi, Yi Guo, Suzy Rogiers et autres

Instance-level segmentation of large-scale 3D point clouds is a fundamental yet challenging task due to complex spatial structures, severe occlusions, and long-range dependencies. These challenges are particularly pronounced in field-scale agricultural scenes, where dense planting, irregular point distributions, and repetitive plant geometries …

au (code pays fourni par la source)

Carbon isotope composition of soluble sugars in leaves of C3 and C4 grasses

Walter Krystler Israel, Hilary Stuart-Williams, Oula Ghannoum

This study examined the carbon isotope composition (δ13C) of soluble sugars (glucose, fructose, sucrose) and cellulose in leaves of C3 and C4 grasses, including NAD-ME and NADP-ME subtypes, grown under controlled conditions. Using a novel compound-specific isotope analysis, we investigated post-photosynthetic fractionation …

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Revisiting the relationship between stomatal size and speed across species - a meta-analysis.

Nik Woning, Yazen Al-Salman, Elias Kaiser, Sarah R. Berman et autres

The rate of stomatal opening and closure in response to changes in light affects leaf photosynthesis and water use. However, it is unclear how strongly stomatal size (SS) and density (SD) influence stomatal conductance (gs) kinetics, and whether variation arises from methodological …

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Auxin-mediated regulation and functional adaptation of leaf veins under heat stress

Afroz Naznin, Yuanyuan Wang, Jing He, Md Mazadul Islam et autres

Elevated global temperatures threaten crop yield and quality by impairing plant hydraulic efficiency and photosynthetic stability, hence highlighting the significance of vascular architectural plasticity in heat stress tolerance. Leaf vein architecture, the principal conduit for water, nutrients, and photosynthates, provides structural support …

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Revisiting the relationship between stomatal size and speed across species – a meta‐analysis

Nik Woning, Yazen Al‐Salman, Elias Kaiser, Sarah R. Berman et autres

Summary The rate of stomatal opening and closure in response to changes in light affects leaf photosynthesis and water use. However, it is unclear how strongly stomatal size ( SS ) and density ( SD ) influence stomatal conductance ( g s …

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Fast stomatal responses require anisohydric stomatal behaviour and lower water use efficiency in sorghum

Yazen Al-Salman, Francisco Javier Cano, Emma Mace, David Jordan et autres

Intrinsic water use efficiency (iWUE), the ratio of leaf carbon assimilation ( A n ) to stomatal conductance to water vapour ( g s ), is an important crop trait. The effect of environmental fluctuations, such as light transitions, on iWUE are …

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Opportunities for improving intrinsic water use efficiency in C 4 plants under climate change

Oula Ghannoum, Yazen Al‐Salman, Francisco Javier Cano

Summary C 4 photosynthesis is inherently efficient, saturating at low intercellular CO 2 ( C i ) and operating under low stomatal conductance ( g s ), resulting in high intrinsic water use efficiency (iWUE = assimilation rates, ( A )/ stomatal …

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Evaluation of Yield-Related Morphological, Physiological, Agronomic, and Nutrient Uptake Traits of Grain Sorghum Varieties in the Kerala Region (India)

Usha Chacko Thomas, Yazen Al‐Salman, Francisco Javier Cano, Roy Stephen et autres

Climate change poses a significant threat to crop production, particularly in tropical and semi-arid regions. Sorghum (Sorghum bicolor (L.) Moench), a resilient C4 cereal, has high photosynthetic efficiency and abiotic stress tolerance, making it a key crop for food, fodder, and feed …

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Environmental factors have a greater influence on photosynthetic capacity in C4 plants than biochemical subtypes or growth forms

Yuzhen Fan, Daniel W. A. Noble, Belinda E. Medlyn, Russell K. Monson et autres

Summary Our understanding of how photosynthetic capacity varies among C4 species and across growth and measurement conditions remains limited. We collated 1696 CO2 response curves of net CO2 assimilation rate (A/Ci curves) from C4 species grown and measured at various environmental conditions …

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Environmental factors have a greater influence on photosynthetic capacity in C4 plants than C4 biochemical subtypes or growth forms

Yuzhen Fan, Belinda E. Medlyn, Russell K. Monson, Rowan F. Sage et autres

• Our understanding of how photosynthesis varies among C4 species and across different growth and measurement conditions remains limited. • We collated 1,696 CO2 response curves of net CO2 assimilation rate (A/Ci curves) from C4 species grown and measured at various environmental …

au, us, ca, gb, br (code pays fourni par la source)