PHENOLOGICAL CHARACTERIZATION OF PEAR TREES (Pyrus communis L.) ‘PRINCESINHA’ UNDER SEMIARID CONDITIONS IN THE NORTHEASTERN BRAZIL

Oliveira, Inez Vilar de Morais; Lopes, P. R. C.; Silva-Matos, Raíssa Rachel Salustriano da

doi:10.1590/0100-29452017598

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…The São Francisco Valley is located in a semi-arid tropical region. In this condition, pear trees growing under high temperatures and constant irrigation do not stop their metabolic functions during the cycle, accelerating branching (25). Vigorous shoot growth impedes light from reaching the inside of canopies, affecting differentiation and formation of flower buds (15), and hence fruit yield and quality.…”

Section: Introductionmentioning

confidence: 99%

Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid

et al. 2022

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Given that Brazilian pear production is unable to meet the annual demand, to consider the possible expansion to non traditional growing regions, turns interesting. Even though under tropical semi-arid conditions pear trees have vigorous vegetative growth, a negative influence on flower bud differentiation and formation affects fruit yield. Our study aimed to evaluate the inhibition efficiency of paclobutrazol (PBZ) on gibberellin biosynthesis, vegetative growth, and carbohydrate production in two pear-treecultivars (‘Santa Maria’ and ‘Hosui’) grown under semi-arid conditions. To this end, two experiments were conducted, one for each pear-tree cultivar. The experimental designs consisted of randomized blocks, with factorial arrangement (5x2x4), corresponding to PBZ doses (0.0, 0.5, 1.0, 1.5, and 2.0 g per linear meter of plant canopy), PBZ application forms (soil and foliar), and evaluation dates (30, 60, 90, and 120 days after application). Both soil and foliar applications inhibited gibberellin biosynthesis in both cultivars, especially after 120 days of application. PBZ affected leaf total soluble carbohydrates and reduced sprout growth in both cultivars. Although PBZ can be potentially used in pear management, further studies are still required to determine specific management practices in tropical semi-arid zones. Highlights: Inhibition of gibberellin biosynthesis is more efficient with soil application of paclobutrazol. Soil application of paclobutrazol results in greater production of carbohydrates. There is a difference in sensitivity to the effects of paclobutrazol among pear varieties. The non-application of paclobutrazol results in late maturation of the branches, compromising floral induction.

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Section: Introductionmentioning

confidence: 99%

Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid

et al. 2022

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“…Studies have shown that it is economically viable to grow pear trees in the Brazilian semi-arid region, with small areas of cultivation already existing (Oliveira et al, 2015;Oliveira et al, 2017c;Oliveira et al, 2022), and, according to Oliveira et al (2015), by using varieties tolerant to the edaphoclimatic conditions of the region, associated with the use of appropriate irrigation management techniques, it is possible to promote fruiting at any time of the year.…”

Section: Introductionmentioning

confidence: 99%

Production, gas and biochemical exchanges in pear cultivated in semi-arid region under different irrigation managements

Gomes

Simões

Silva

et al. 2023

Rev. bras. eng. agríc. ambient.

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The objective of this study was to evaluate the influence of irrigation systems and water depths on physiological, biochemical and production processes of pear trees grown in the Brazilian semi-arid region. The experimental design was randomized blocks, with 2 × 4 factorial scheme, corresponding to two irrigation systems (drip and microsprinkler) and four irrigation depths (60, 80, 100 and 120% of the crop evapotranspiration - ETc), with four replicates. Water deficit and excess applied to plants are harmful to gas exchange as well as to biosynthesis and accumulation of carbohydrates, amino acids and proteins in leaves, compromising the cultivation cycle of pear plants grown in the Sub-Middle São Francisco region. The irrigation depth of 91.8% ETc promotes the highest production of pear (18.49 kg plant-1) under drip and microsprinkler irrigation systems, under the edaphoclimatic conditions of the Sub-Middle São Francisco region.

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Ascospore germination and comparative monocycle of neonectria fruit rot on apple and pear

Gelain,

Zeviani,

May-De Mio

2023

Eur J Plant Pathol

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PHENOLOGICAL CHARACTERIZATION OF PEAR TREES (Pyrus communis L.) ‘PRINCESINHA’ UNDER SEMIARID CONDITIONS IN THE NORTHEASTERN BRAZIL

Cited by 4 publications

References 9 publications

Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid

Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid

Production, gas and biochemical exchanges in pear cultivated in semi-arid region under different irrigation managements

Ascospore germination and comparative monocycle of neonectria fruit rot on apple and pear

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