scholarly journals PRODUÇÃO E RESPOSTAS FISIOLÓGICAS DA MANGUEIRA CV. KEITT SOB DIFERENTES SISTEMAS DE IRRIGAÇÃO NO SUBMÉDIO DO SÃO FRANCISCO

Irriga ◽  
2018 ◽  
Vol 23 (1) ◽  
pp. 34-43 ◽  
Author(s):  
Welson Lima Simões ◽  
Pedro Paulo Bezerra Ferreira ◽  
Maria Aparecida do Carmo Mouco ◽  
Maria Auxiliadora Coelho Lima ◽  
Miguel Julio Machado Guimarães ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Irrigation System ◽  
Mangifera Indica ◽  
Block Design ◽  
Net Photosynthesis ◽  
Titratable Acidity ◽  
Volume Density ◽  
Soluble Solids ◽  
Irrigation Systems ◽  
E Mail

PRODUÇÃO E RESPOSTAS FISIOLÓGICAS DA MANGUEIRA CV. KEITT SOB DIFERENTES SISTEMAS DE IRRIGAÇÃO NO SUBMÉDIO DO SÃO FRANCISCO  WELSON LIMA SIMÕES1; PEDRO PAULO BEZERRA FERREIRA2; MARIA APARECIDA DO CARMO MOUCO3; MARIA AUXILIADORA COELHO DE LIMA4; MIGUEL JULIO MACHADO GUIMARÃES5 E JOSÉ ALIÇANDRO BEZERRA DA SILVA6  1 Embrapa Semiárido, rodovia BR-428, Km 152, s/n, Zona Rural, EMBRAPA, Petrolina, PE, CEP 56302-970. E-mail: [email protected] Universidade Federal do Vale do São Francisco, UNIVASF, Juazeiro, BA, CEP 48.902-300. E-mail: [email protected] Embrapa Semiárido, rodovia BR-428, Km 152, s/n, Zona Rural, EMBRAPA, Petrolina, PE, CEP 56302-970. E-mail: [email protected] Embrapa Semiárido, rodovia BR-428, Km 152, s/n, Zona Rural, EMBRAPA, Petrolina, PE, CEP 56302-970. E-mail: [email protected] Engenharia Agrícola -  Universidade Federal Rural de Pernambuco, UFRPE, Recife, PE, CEP 52171-900. E-mail: [email protected] Departamento de fisiologia, Universidade Federal do Vale do São Francisco, UNIVASF, Juazeiro, BA, CEP 48.902-300. E-mail:  [email protected]  1 RESUMO O objetivo deste trabalho foi avaliar a influência de quatro arranjos de sistemas de irrigação sobre a fisiologia, a produtividade e a qualidade pós-colheita dos frutos da mangueira (Mangifera indica L.) cv. Keitt, no Submédio do Vale São Francisco. O experimento foi conduzido no delineamento experimental em blocos casualizados, com 04 tratamentos e 05 repetições, durante dois ciclos de cultivo. Os tratamentos foram: T1 – Um microaspersor sob copa; T2 – Um microaspersor entre plantas; T3 – Duas linhas laterais de gotejadores por fileira de planta; e T4 – Uma faixa de gotejo em formato de anel ou espiral (rabo de porco) ao redor da planta. Foram avaliadas: as respostas fisiológicas das plantas (fotossíntese líquida, condutância estomática, transpiração e temperatura foliar); o peso médio dos frutos; a produtividade; a quantidade de frutos por planta; e a qualidade dos frutos: volume, densidade, firmeza da polpa, teor de sólidos solúveis e acidez titulável. O sistema de irrigação por gotejamento é o mais indicado para o cultivo da mangueira cv. Keitt no Submédio do Vale do São Francisco, por interferir positivamente na fisiologia e na produtividade da planta e no número e firmeza dos frutos. Palavras-chave: fotossíntese, produtividade, qualidade de fruto  SIMÕES, W. L.; FERREIRA, P. P. B.; MOUCO, M. A. do C.; LIMA, M. A. C.; GUIMARÃES, M. J. M.; SILVA, J. A. B. da.PRODUCTION AND PHYSIOLOGICAL RESPONSES OF MANGO CV. KEITT UNDER DIFFERENT IRRIGATION SYSTEMS IN SÃO FRANCISCO RIVER’S  LOWER MIDDLE  2 ABSTRACT In order to assess the effect of four irrigation systems on post-harvest physiology, productivity and quality of  mango (Mangifera indica L.) cv. Keitt fruits, in São Francisco river’s lower middle, an experiment was conducted in a randomized block design with 04 treatments and 05 repetitions for two crop cycles. The treatments were: T1 - One micro-sprinkler under plant; T2 – One micro-sprinkler between plants; T3 - Two lines of drippers per plant; and T4 - One line of drippers around the plant. The physiological characteristics of plants (net photosynthesis, stomatal conductance, transpiration and leaf temperature); the average weigh of fruits; productivity; amounts of fruits per plant; and fruit quality (volume, density, pulp firmness, content of soluble solids, and titratable acidity) were assessed.  It was found that the drip irrigation system is best suited for the cultivation of mango cv. Keitt in São Francisco river lower middle, for positively affecting the plant physiology and productivity and the number firmness of fruits. Keywords: photosynthesis, productivity, fruit quality

scholarly journals PRODUCTION AND POST HARVEST OF ‘KENT’ MANGO UNDER DIFFERENT IRRIGATION SYSTEMS

2020 ◽  
Vol 28 ◽  
pp. 397-404
Author(s):  
Welson Lima Simões ◽  
Victor Pimenta Andrade ◽  
Maria Aparecida Mouco ◽  
Jucicléia Soares Silva ◽  
Weslley Oliveira Silva
Keyword(s):  
Irrigation System ◽  
Block Design ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Average Weight ◽  
Efficient Production ◽  
Soluble Solids Content ◽  
Irrigation Systems ◽  
Post Harvest ◽  
Solids Content

Facing the fruit market’s search for more efficient production systems, this research aimed to identify an arrangement of efficient irrigation systems for the productive and postharvest characteristics of ‘Kent’ mango fruits, under the conditions of the Brazilian semiarid. The research was performed in an agricultural property in the municipality of Petrolina-PE, with the soil classified in Quartzarenic Neosol. Four irrigation system arrangements were tested: a micro sprinkler below the canopy; a micro sprinkler between plants; two lateral dripper lines per row of plant; and a ring-shaped drip strip around the plant in a randomized block design with five repetitions. The productive characteristics were evaluated, such as number and average weight of fruits and productivity; and qualitative parameters (evaluated by plant quadrant): volume, density, firmness, soluble solids content and titratable acidity. A micro sprinkler between plants provided a greater number of fruits and productivity, as well as greater firmness and titratable acidity for mangoes of the South and West quadrants; these characteristics associated with the lowest soluble solids content of the pulp, at the time of harvest, was also obtained with a micro sprinkler between plants and induce a longer post harvest time to the fruits.

scholarly journals Productivity, quality of fruits and architecture of Jalapeño pepper at different planting densities

2019 ◽  
Vol 37 (3) ◽  
pp. 331-337
Author(s):  
Carlos Francisco Ragassi ◽  
Juliana Zucolotto ◽  
Lucas M Gomes ◽  
Cláudia SC Ribeiro ◽  
Nuno Rodrigo Madeira ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Plant Architecture ◽  
Block Design ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Randomized Complete Block Design ◽  
Total Titratable Acidity ◽  
Second Year ◽  
Increase In Productivity

ABSTRACT Mechanizing the harvest of Jalapeño pepper involves changes in the production system. Spacings between plants in rows (10 to 40 cm; 60 cm fixed between rows) were evaluated in relation to plant architecture, productivity and fruit quality of cultivar BRS Sarakura during three years, in a randomized complete block design with five replicates. Productivity (41.9 to 78.8 t ha-1) and plant height (40.1 to 47.3 cm) responded linearly to density; on the other hand, productivity per plant responded negatively (0.48 to 1.04 kg plant-1). The stem first bifurcation height was little influenced. Fruit chemical analyses were carried out in the second year of the experiment; spacing significantly influenced pH (5.36 to 4.84), total titratable acidity (TTA) (0.48 to 0.36%) and total soluble solids (TSS)/TTA ratio (11.5 to 15.6); no influence on TSS (5.65%) was noticed, though. The increase of plant population provided an increase in productivity without affecting fruit quality; the highest height of the first bifurcation achieved may not be enough to enable mechanized harvesting of the cultivar BRS Sarakura.

scholarly journals Apple Orchard Productivity and Fruit Quality under Organic, Conventional, and Integrated Management

HortScience ◽  
2006 ◽  
Vol 41 (1) ◽  
pp. 99-107 ◽  
Author(s):  
Gregory M. Peck ◽  
Preston K. Andrews ◽  
John P. Reganold ◽  
John K. Fellman
Keyword(s):  
Fruit Quality ◽  
Crop Yields ◽  
Block Design ◽  
Leaf Tissue ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
Apple Orchard ◽  
Soluble Solids ◽  
Crop Load ◽  
Flesh Firmness

Located on a 20-ha commercial apple (Malus domestica Borkh.) orchard in the Yakima Valley, Washington, a 1.7-ha study area was planted with apple trees in 1994 in a randomized complete block design with four replications of three treatments: organic (ORG), conventional (CON), and integrated (INT). Soil classification, rootstock, cultivar, plant age, and all other conditions except management were the same on all plots. In years 9 (2002) and 10 (2003) of this study, we compared the orchard productivity and fruit quality of `Galaxy Gala' apples. Measurements of crop yield, yield efficiency, crop load, average fruit weight, tree growth, color grades, and weight distributions of marketable fruit, percentages of unmarketable fruit, classifications of unmarketable fruit, as well as leaf, fruit, and soil mineral concentrations, were used to evaluate orchard productivity. Apple fruit quality was assessed at harvest and after refrigerated (0 to 1 °C) storage for three months in regular atmosphere (ambient oxygen levels) and for three and six months in controlled atmosphere (1.5% to 2% oxygen). Fruit internal ethylene concentrations and evolution, fruit respiration, flesh firmness, soluble solids concentration (SSC), titratable acidity (TA), purgeable volatile production, sensory panels, and total antioxidant activity (TAA) were used to evaluate fruit quality. ORG crop yields were two-thirds of the CON and about half of the INT yields in 2002, but about one-third greater than either system in 2003. High ORG yields in 2003 resulted in smaller ORG fruit. Inconsistent ORG yields were probably the result of several factors, including unsatisfactory crop load management, higher pest and weed pressures, lower leaf and fruit tissue nitrogen, and deficient leaf tissue zinc concentrations. Despite production difficulties, ORG apples had 6 to 10 N higher flesh firmness than CON, and 4 to 7 N higher than INT apples, for similar-sized fruit. Consumer panels tended to rate ORG and INT apples to have equal or better overall acceptability, firmness, and texture than CON apples. Neither laboratory measurements nor sensory evaluations detected differences in SSC, TA, or the SSC to TA ratio. Consumers were unable to discern the higher concentrations of flavor volatiles found in CON apples. For a 200 g fruit, ORG apples contained 10% to 15% more TAA than CON apples and 8% to 25% more TAA than INT apples. Across most parameters measured in this study, the CON and INT farm management systems were more similar to each other than either was to the ORG system. The production challenges associated with low-input organic apple farming systems are discussed. Despite limited technologies and products for organic apple production, the ORG apples in our study showed improvements in some fruit quality attributes that could aid their marketability.

scholarly journals Quality aspects of pepino dulce fruits in distinct ripening stages, packaging forms and storage conditions

2020 ◽  
Vol 23 ◽  
Author(s):  
Neide Botrel ◽  
Raphael Augusto de Castro e Melo
Keyword(s):  
Fruit Quality ◽  
Block Design ◽  
Titratable Acidity ◽  
Storage Conditions ◽  
Matter Content ◽  
Soluble Solids ◽  
Small Scale ◽  
Dry Matter Content ◽  
Ripening Stages ◽  
Quality Aspects

Abstract Pepino dulce (Solanum muricatum Aiton) or Pepino has been growing to produce edible, juicy and attractive fruits. The imported fruits and national small scale of Pepino dulce production are currently stored and commercialized under the absence of postharvest handling recommendations. Therefore, this work aimed to evaluate the quality aspects of Pepino dulce fruits in distinct ripening stages, forms of packaging and conditions of storage. The trial was conducted in a 2x2x2 factorial scheme - 2 ripening stages (ripe and immature) x 2 forms of packaging (with and without wrapping in plastic film) x 2 conditions of storage (room: 25 °C ± 2 ºC and 57% ± 5% of relative humidity (RH); cold: under refrigeration 10 °C ± 2 °C and 85% ± 5% of RH) – in a complete randomized block design. Fruit quality attributes, such as vitamin C, chemical and phenolic content, fruit color (mesocarp), firmness, dry matter content, total titratable acidity (TA), total soluble solids and pH, were evaluated. Fruits showed a centesimal composition with low calories and a significant content of potassium (K), phosphorus (P) and magnesium (Mg), which can contribute to the daily supply of these elements. For commercialization purposes, the association of packaging (plastic wrapping film) and refrigerated storage (cold: 10 °C ± 2 °C and 85% ± 5% of RH) to maintain the characteristics of fruit quality after a 15 days period is more important than its individual use.

scholarly journals Fruit quality of west indian cherry irrigated with saline waters under combinations of nitrogen/potassium fertilization

2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Evandro Manoel Da Silva ◽  
Hans Raj Gheyi ◽  
Reginaldo Gomes Nobre ◽  
Joicy Lima Barbosa ◽  
Bárbara Genilze Figueiredo Lima Santos ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Irrigation Water ◽  
Block Design ◽  
Fruit Size ◽  
West Indian ◽  
Titratable Acidity ◽  
Fruit Shape ◽  
Soluble Solids ◽  
Potassium Fertilization

West Indian cherry stands out among the fruits cultivated for the pharmacological and alimentary importance, but its quality can be affected by irrigation water salinity and fertilization management. In this context, this research aimed to study the effect of irrigation water of different salinities and combinations of nitrogen and potassium fertilization on the physical and physico-chemical quality of bioactive compounds in West Indian cherry fruits. The experiment was carried out in the field, using lysimeters of 60 L, in the Experimental Area of the Centro de Ciências e Tecnologia Agroalimentar (CCTA) of Universidade Federal de Campina Grande (UFCG), Pombal, PB, in a randomized block design, with treatments arranged in a 5 x 4 factorial scheme, referring to five irrigation water salinities (ECw): 0.3, 1.3, 2.3, 3.3 and 4.3 dS m-1 and four combinations (C) of doses of nitrogen (N) and potassium (K2O): C1 = 70% N + 50% K2O; C2 = 100% N + 75% K2O; C3 = 130% N + 100% K2O and C4 = 160% N + 125% K2O, of the recommended dose for West Indian cherry, with three replicates and one plant per plot consisting of a lysimeter. The cv. Flor Branca grafted on cv. Junco was used in the study. The increase in salinity of irrigation water reduced the size, weight and vitamin C content of the fruits, but, the combinations of N and K fertilization did not affect fruit shape and the content of anthocyanin, carotenoids, pH, titratable acidity, total soluble solids and fruit flavor. Fertilization combinations consisting of C1 and C2 treatments promoted the largest fruit size under irrigation with ECw of up to 1.3 dS m-1 and greater mass accumulation. Fertilization doses above C2 combinations negatively affected fruit quality.

scholarly journals PRODUTIVIDADE DA CEBOLA SOB DIFERENTES MANEJOS DE IRRIGAÇÃO

Irriga ◽  
2018 ◽  
Vol 23 (2) ◽  
pp. 262-272
Author(s):  
Regiane de Carvalho Bispo ◽  
Gertrudes Macário de Oliveira ◽  
Sérgio Oliveira Pinto de Queiroz ◽  
Irai Manuela Santana Santos ◽  
Esmailly de Sousa Pessoa
Keyword(s):  
Allium Cepa ◽  
Block Design ◽  
Irrigation Management ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Dry Matter Content ◽  
Class A ◽  
Allium Cepa L ◽  
E Mail ◽  
Class A Pan

PRODUTIVIDADE DA CEBOLA SOB DIFERENTES MANEJOS DE IRRIGAÇÃO1     REGIANE DE CARVALHO BISPO2; GERTRUDES MACÁRIO DE OLIVEIRA3; SÉRGIO OLIVEIRA PINTO DE QUEIROZ4; IRAI MANUELA SANTANA SANTOS5 E ESMAILLY DE SOUSA PESSOA6   1 Parte da dissertação de mestrado do primeiro autor 2 Doutoranda do Programa de Pós-Graduação em Irrigação e Drenagem, Universidade Estadual Paulista “Júlio Mesquita Filho” - UNESP/FCA, Rua José Barbosa de Barros,1780, Botucatu, SP. E-mail: [email protected] 3 Professora Adjunta, Universidade do Estado da Bahia - UNEB/DTCS, Av. Edgard Chastinet, s/n, Bairro São Geraldo, Juazeiro, BA. E-mail: [email protected] 4 Professor Titular, Universidade do Estado da Bahia - UNEB/DTCS, Av. Edgard Chastinet, s/n, Bairro São Geraldo, Juazeiro, BA. E-mail: [email protected] 5 Doutoranda do Programa de Pós-Graduação em Engenharia Agrícola, Universidade Federal do Recôncavo da Bahia – UFRB/CCAAB, Rua Rui Barbosa, 710, Centro, Cruz das Almas-BA. E-mail: [email protected] 6 Engenheiro Agrônomo, Vilmorin do Brasil LTDA, Avenida José Bonifácio, 354, Jardim Flamboyant, Campinas-SP. E-mail: esmailly.pessoa@gmail.     1 RESUMO   O presente trabalho teve como objetivo avaliar o desempenho agronômico da cebola irrigada por gotejamento, submetida a três métodos de manejo de irrigação. O experimento foi conduzido no campo experimental do DTCS/UNEB, em Juazeiro, no período de junho a novembro de 2013. Adotou-se o delineamento em blocos ao acaso, com três tratamentos e sete repetições. Os tratamentos considerados foram: Tensiometria, Penman-Monteith FAO e Tanque Classe A. A cultivar utilizada foi a Vale Ouro IPA-11. Foram avaliadas as seguintes características: produtividade total, produtividade comercial, produção de bulbos classe 1, 2, 3 e 4, diâmetro médio, peso médio do bulbo, teor de matéria seca do bulbo, acidez titulável, sólidos solúveis, relação sólidos solúveis/acidez titulável e pungência. Os métodos de manejo de irrigação baseados tanto no teor de umidade do solo, como no microclima proporcionaram produtividades superiores a média nacional. O método do tanque Classe A e tensiometria não diferiram estatisticamente do método padrão Penman-Monteith, sendo assim, a escolha do método deve ser baseada na disponibilidade de ferramentas e também custo de implantação e operação.   Palavras-chaves: Allium cepa L., evapotranspiração, tensiometria, manejo de água.      BISPO, R. C.; OLIVEIRA, G. M.; QUEIROZ, S. O. P.; SANTOS, I. M. S.; PESSOA, E. S. ONION YIELDS UNDER DIFFERENT IRRIGATION MANAGEMENTS     2 ABSTRACT   The present work aimed at evaluating the agronomic performance of onion under irrigation, submitted to three methods of irrigation management. The experiment was conducted in the experimental field of DTCS / UNEB, in Juazeiro, from June to November 2013. A randomized block design was used with three treatments and seven replicates. The treatments considered were: Tensiometry, Penman-Monteith FAO and Class A pan. The cultivar used was Vale Ouro IPA-11. The following characteristics were evaluated: total productivity, commercial productivity, production of bulbs class 1, 2, 3 and 4, average diameter, average bulb weight, bulb dry matter content, titratable acidity, soluble solids, soluble solids / titratable acidity ratio and pungency. Irrigation management methods based on soil moisture content and microclimate, yields above the national average. The Class A pan method and tensiometry did not differ statistically from the standard Penman-Monteith-FAO method, so the choice of method should be based on the availability of tools as well as the cost of implantation and operation.   Keywords: Allium cepa L., evapotranspiration, tensiometry, water management.

scholarly journals Perbaikan Kualitas Buah Jambu Biji (Psidium guajava L.) Kultivar Kristal dengan Berbagai Warna dan Bahan Pemberongsong

2017 ◽  
Vol 8 (3) ◽  
pp. 155
Author(s):  
Atika Romalasari ◽  
Slamet Susanto ◽  
Maya Melati ◽  
Ahmad Junaedi
Keyword(s):  
Fruit Quality ◽  
Block Design ◽  
Fruit Size ◽  
Growth Period ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Economic Losses ◽  
Fruit Peel ◽  
External Quality ◽  
Transparent Plastic

<p align="center"><strong><em>ABSTRACT <br /></em></strong></p><p><em>Kristal guava is one of the popular guava cultivars nowadays. The guava has white flesh and not-perfectly-round shaped that resembles a crystal and seedless. However, during the growth period fruit undergoes several physical and chemical changes and susceptible to insect infestation and other damage, all of which can reduce their commercial value and thus cause significant yield and economic losses. The aim of this research was to evaluate the influence of different color and bagging materials on guava fruit development and quality. The research was conducted at farmer farm located in Cikarawang Dramaga, from November 2013 to April 2014. This research was arranged in a randomized block design with one factor, consisted of ten treatments and five replications. The treatments were red plastic, yellow plastic, green plastic, blue plastic, sponnet with red plastic, sponnet with yellow plastic, sponnet with green plastic, sponnet with blue plastic, sponnet with transparent plastic and unbagged. Fruit quality assesment was conducted in Postharvest Laboratory of Agronomy and Horticulture Department, Bogor Agricultural University and Center for Tropical Horticultural Studies. The result showed that bagging improved fruit size, external quality and accelerated fruit maturity. Sponnet with red plastic bagging resulted in the biggest fruit at harvest. Sponnet with yellow or with red plastic baggings were able to maintain fruit peel smoothness up to 85%. Sponnet and plastic bagging resulted in better external quality than bagging with plastic only. Bagging did not show any effect on internal fruit quality.</em></p><p><em> </em></p><p><em>Keywords: colored bag, guava cv. Kristal, soluble solids content, sponnet, titratable acidity</em></p><p><em><br /></em></p><p align="center"><strong>ABSTRAK <br /></strong></p><p>Jambu ‘Kristal’ merupakan salah satu kultivar jambu biji yang sedang populer saat ini. Jambu Kristal memiliki daging buah berwarna putih, berbentuk bulat tidak beraturan serta berbiji sedikit. Selama pertumbuhan dan perkembangan buah mengalami berbagai perubahan fisik dan kimia dan rentan terhadap serangan hama, yang secara keseluruhan dapat mengurangi nilai komersial sehingga menyebabkan kehilangan yang signifikan dari segi hasil panen dan kerugian ekonomi. Tujuan dari penelitian ini adalah untuk menjelaskan pengaruh warna dan bahan pemberongsong terhadap perbaikan kualitas buah jambu ‘Kristal’. Penelitian dilaksanakan pada November 2013 sampai April 2014, di kebun petani yang berlokasi di Cikarawang, Dramaga, Bogor. Penelitian menggunakan Rancangan Acak Kelompok dengan satu faktor yaitu pemberongsongan buah, dengan sepuluh taraf dan lima ulangan. Perlakuan pemberonsongan menggunakan plastik merah, plastik kuning, plastik hijau, plastik biru, <em>sponnet </em>dan plastik merah, <em>sponnet</em> dan plastik kuning, <em>sponnet</em> dan plastik hijau, <em>sponnet</em> dan plastik biru, <em>sponnet</em> dan plastik bening serta tanpa pemberongsong. Pengujian kualitas buah dilakukan di Laboratorium Pascapanen Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor dan Laboratorium Pusat Kajian Hortikultura Tropika (PKHT) IPB. Hasil penelitian menunjukkan bahwa pemberongsongan memperbaiki pertumbuhan, kualitas eksternal dan mempercepat pematangan buah. Pemberongsongan <em>sponnet</em> dan plastik merah menghasilkan buah dengan ukuran terbesar pada saat panen. Pemberongsongan menggunakan <em>sponnet</em> dengan plastik kuning atau merah mampu menjaga kemulusan buah hingga 85%. Pemberongsongan <em>sponnet</em> dan plastik menghasilkan kualitas eksternal yang cenderung lebih baik dibandingkan pemberongsongan hanya dengan plastik. Pembrongsongan tidak berpengaruh nyata terhadap kualitas internal buah.</p><p>Kata kunci: asam tertitrasi total, jambu ‘Kristal’, <em>sponet</em>, padatan terlarut total, pemberongsong berwarna</p>

scholarly journals Potassium and Nitrogen Fertigation Frequency on Pineapple Yield and Fruit Quality

2019 ◽  
Vol 11 (6) ◽  
pp. 416
Author(s):  
Ana Maria Alves de Souza Ribeiro ◽  
Robson Bonomo ◽  
Moises Zucoloto ◽  
Fábio Oseias dos Reis da Silva ◽  
Mariana Vasconcelos Barroca ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Block Design ◽  
Titratable Acidity ◽  
Additional Treatment ◽  
Soluble Solids ◽  
Fruit Characteristics ◽  
Physical Chemical ◽  
Randomized Block Design ◽  
Crop Cycle ◽  
Fruit Mass

Pineapple is a nutritionally demanding crop, with emphasis on potassium and nitrogen nutrients. In this context, the aim of this paper was to study the effect of nitrogen (N) and potassium (K) fertigation frequencies on the physical-chemical fruit characteristics of &lsquo;P&eacute;rola&rsquo; pineapple crop. The experiment was conducted in a randomized block design, with 18 treatments and 4 replications. It was used a factorial scheme (4 &times; 4) + 1 + 1, which represents: four N fertigation frequencies applied by surface drip irrigation (4, 7, 27 and 54 times throughout the crop cycle); four K fertigation frequencies (4, 9, 35 and 70 times); one additional treatment (irrigated, but without fertigation); and one control (non irrigated and non fertigated). The fruit characteristics analyzed were: fruit mass with crown, yield, soluble solids, pH, titratable acidity and SS/TA ratio. The N fertigation frequencies had no effect on variables evaluated, however, the K frequencies had a significant influence on fruit mass with crown, yield and pH. The results showed that the effect of K frequencies applied through fertigation on pineapple yield and fruit physical-chemical quality was more pronounced in comparison to the effect of N applications. Monthly potassium fertigations, followed by four applications throughout the crop cycle, provided the greatest increase in fruit quality, allowing higher values of fruit mass, yield and pH.

scholarly journals High-density linkage map construction and identification of loci regulating fruit quality traits in blueberry

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Molla F. Mengist ◽  
Hamed Bostan ◽  
Elisheba Young ◽  
Kristine L. Kay ◽  
Nicholas Gillitt ◽  
...  
Keyword(s):  
Linkage Map ◽  
Fruit Quality ◽  
Titratable Acidity ◽  
Fruit Weight ◽  
High Density ◽  
Soluble Solids ◽  
Quality Traits ◽  
Total Soluble Solids ◽  
Fruit Quality Traits ◽  
High Density Linkage Map

AbstractFruit quality traits play a significant role in consumer preferences and consumption in blueberry (Vaccinium corymbosum L). The objectives of this study were to construct a high-density linkage map and to identify the underlying genetic basis of fruit quality traits in blueberry. A total of 287 F1 individuals derived from a cross between two southern highbush blueberry cultivars, ‘Reveille’ and ‘Arlen’, were phenotyped over three years (2016–2018) for fruit quality-related traits, including titratable acidity, pH, total soluble solids, and fruit weight. A high-density linkage map was constructed using 17k single nucleotide polymorphisms markers. The linkage map spanned a total of 1397 cM with an average inter-loci distance of 0.08 cM. The quantitative trait loci interval mapping based on the hidden Markov model identified 18 loci for fruit quality traits, including seven loci for fruit weight, three loci for titratable acidity, five loci for pH, and three loci for total soluble solids. Ten of these loci were detected in more than one year. These loci explained phenotypic variance ranging from 7 to 28% for titratable acidity and total soluble solid, and 8–13% for pH. However, the loci identified for fruit weight did not explain more than 10% of the phenotypic variance. We also reported the association between fruit quality traits and metabolites detected by Proton nuclear magnetic resonance analysis directly responsible for these fruit quality traits. Organic acids, citric acid, and quinic acid were significantly (P < 0.05) and positively correlated with titratable acidity. Sugar molecules showed a strong and positive correlation with total soluble solids. Overall, the study dissected the genetic basis of fruit quality traits and established an association between these fruit quality traits and metabolites.

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