Multiscale analyses of growth and berry distributions along four branching orders and vertical profile of Coffea arabica L. cultivated under high-density planting systems

Rakocevic, Miroslava; Matsunaga, Fabio Takeshi; Baroni, Danilo Força; Campostrini, Eliemar; Costes, Evelyne

doi:10.1016/j.scienta.2021.109934

Cited by 11 publications

(8 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From a morphological perspective, leaf elevation angles vary significantly over the vertical profile of Arabica coffee canopy (Unigarro-Muñoz et al, 2017), which likely changes light incidence and availability inside canopy. Low light conditions modify some leaf gas exchange responses in the bottom stratum (Rakocevic et al, 2021a) and morphological characteristics, such as increased metamer length (Rakocevic et al, 2021b), green bean's chemical characteristics (Rakocevic et al, 2018a(Rakocevic et al, , 2023, or beverage sensorial quality (Scholz et al, 2018) compared to the upper canopy strata, where light is not limiting.…”

Section: Introductionmentioning

confidence: 99%

Drought responses in Coffea arabica as affected by genotype and phenophase. I – leaf distribution and branching

Rakocevic,

Matsunaga,

Pazianotto

et al. 2024

Ex. Agric.

View full text Add to dashboard Cite

Summary In Coffea arabica, there is a small genetic distance between wild and bred genotypes. However, coffee genotypes express differential acclimation to multiple drought cycles, allowing them to successfully deal with water-limiting conditions. We hypothesized that bred coffee cultivars have a plant structure less sensitive to drought than wild genotypes. Plant and leaf architecture were analyzed over the coffee strata of two cultivars (Iapar 59 and Catuaí 99) and two wild Ethiopia accessions (‘E083’ and ‘E027’) grown under rainfed conditions and irrigation. During two consecutive productive years, evaluations were taken at leaf and berry expansion (BE1 and BE2) and harvest (BH1 and BH2) phenophases. The plant canopy was divided into up to four strata of 40 cm of thickness. Topological and geometric coding of coffee trees was performed in three botanical scales – metamers, branches, and plants in multiscale tree graphs (MTGs), following the VPlants modeling platform. Leaf and branch area per plant increased with tree structure development, being always significantly higher in irrigated than in rainfed plants over all phenophases. The individual leaf area was the least sensitive to water regime in Catuaí 99, while the 2nd order axis elevation – angle in relation to horizontal plane, ranging from 0° to 90° – of bred cultivars was less sensitive to drought than in ‘E083’. This finding partially corroborated our hypothesis that orchestrated reprograming of leaf/branch responses over the vertical plant profile were less sensitive to water availability in cultivars than in wild accessions. Leaves of 2nd to 4th-order branching were roughly plagiophile, while the 1st-order leaves were classified as extremophiles. When the coffee leaves were planophile, irrespective of genotype, this pattern was found at the lowest, 1st plant stratum, and the newest developed 4th stratum. Such responses were not obligatorily related to water regime, similar to branch elevation – with exception of ‘E083’, very sensitive to drought. Taken together, our data suggest that the leaf and branch elevations in C. arabica were more influenced by light distribution through the canopy profile – i.e., self-shading – than by water availability.

show abstract

Section: Introductionmentioning

confidence: 99%

Drought responses in Coffea arabica as affected by genotype and phenophase. I – leaf distribution and branching

Rakocevic,

Matsunaga,

Pazianotto

et al. 2024

Ex. Agric.

View full text Add to dashboard Cite

show abstract

“…The complete phenological cycle of coffee tree takes 2 years and is composed of vegetative (first phenological year) and reproductive (second phenological year) phases, six in totality (Camargo and Camargo, 2001). After the first harvest, two parallel phenophases (e.g., flower bud induction and vegetative growth) can happen in the branches of one plant, or in neighboring metamers of the same plagiotropic axis (Rakocevic et al, 2021b).…”

Section: Introductionmentioning

confidence: 99%

“…After the first harvest, two parallel phenophases (e.g., flower bud induction and vegetative growth) can happen in the branches of one plant, or in neighboring metamers of the same plagiotropic axis (Rakocevic et al. , 2021b).…”

Section: Introductionmentioning

confidence: 99%

Kaolin particle film mitigates supra-optimal temperature stress effects at leaf scale and increases bean size and productivity of Coffea canephora

et al. 2023

Self Cite

View full text Add to dashboard Cite

Summary In young plants of Coffea canephora, fine particle film based on calcined kaolin (KF) causes a decrease in leaf temperature (Tleaf), minimizing the damages to the photochemical apparatus, especially in summer season, but no report about the ecophysiological responses to KF over phenology is available on this species. We hypothesized that greater ecophysiological effects of KF would occur during the summer phenophase of leaf area and berry expansion (BE) compared with autumn berry maturation phase (BR), and that those benefits will have impact on bean productivity and physical quality. In this sense, the present study aimed to analyze the effects of KF on some ecophysiological parameters in the last phenophases of C. canephora biennial cycle, bean productivity, and bean size classification. During the complete phenological cycle, eight applications of KF were performed, totaling 80 kg of KF ha−1 in two years. KF applications and ecophysiological measurements occurred during the BE and BR phenophases. Firstly, we documented temporal dynamics in responses of field-grown C. canephora adult plants to KF application. KF reduced Tleaf and crop water stress index and increased the thermal index of relative stomatal conductance and relative chlorophyll content (SPAD index) observed in the autumn BR (opposite to young plants). The positive impact of KF on chlorophyll a fluorescence was proportionally similar among the observed phenophases. Secondly, KF increased bean size 16 by 50% and increased total productivity. The plants treated with KF increased productivity by 1.7 t ha− commercially useful bean mass compared to the control. The kaolin dose of 40 kg ha−1 distributed four times per year was highly effective as a protection strategy against high-light and elevated Tair.

show abstract

“…Despite these positive aspects, the recommendation of AFS in coffee production is still of controversial nature due to a large body of data showing significant single-year yield reductions under shaded coffee environments compared to FS (Clemens & Zablah, 1993;Beer et al, 1997;Carelli et al, 2001;DaMatta, 2004;Campanha et al, 2004;Haggar et al, 2011). Furthermore, recent studies have demonstrated that self-shading under highly dense planting management can also negatively impact coffee yield (Cheng et al, 2020;Rakocevic et al, 2021). Coffee yield differences between FS and AFS can be skewed by the strong biannual variation and overbearing branch die-back reported predominantly under FS systems (Vaast et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Shade effects on yield across different Coffea arabica cultivars — how much is too much? A meta-analysis

Koutouleas

Sarzynski

Bertrand

et al. 2022

Agron. Sustain. Dev.

View full text Add to dashboard Cite

The coffee research community has maintained a long ongoing debate regarding the implications of shade trees in coffee production. Historically, there has been contrasting results and opinions on this matter, thus recommendations for the use of shade (namely in coffee agroforestry systems) are often deemed controversial, particularly due to potential yield declines and farmers’ income. This study is one of the first demonstrating how several Coffea arabica cultivars respond differently to shade with respect to yield. By standardising more than 200 coffee yield data from various in-field trials, we assembled the so-called “Ristretto” data pool, a one of a kind, open-source dataset, consolidating decades of coffee yield data under shaded systems. With this standardised dataset, our meta-analysis demonstrated significant genotypic heterogeneity in response to shade, showing neutral, inverted U-shaped and decreasing trends between yield and shade cover amongst 18 different cultivars. These findings encourage the examination of C. arabica at the cultivar level when assessing suitability for agroforestry systems. Comparison of productivity is also encouraged across a range of low to moderate shade levels (10–40%), in order to help elucidate potential unknown optimal shade levels for coffee production.

show abstract

Multiscale analyses of growth and berry distributions along four branching orders and vertical profile of Coffea arabica L. cultivated under high-density planting systems

Cited by 11 publications

References 32 publications

Drought responses in Coffea arabica as affected by genotype and phenophase. I – leaf distribution and branching

Drought responses in Coffea arabica as affected by genotype and phenophase. I – leaf distribution and branching

Kaolin particle film mitigates supra-optimal temperature stress effects at leaf scale and increases bean size and productivity of Coffea canephora

Shade effects on yield across different Coffea arabica cultivars — how much is too much? A meta-analysis

Contact Info

Product

Resources

About