Crescimento e produtividade de cultivares de morangueiro de "dia neutro" em diferentes densidades de plantio em sistema de cultivo orgânico

Strassburger, André Samuel; Peil, Roberta Maríns Nogueira; Schwengber, José Ernani; Medeiros, Carlos Alberto; Martins, Denise de Souza; Silva, Jurandir Buchweitz e

doi:10.1590/s0006-87052010000300014

Cited by 25 publications

(15 citation statements)

References 17 publications

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“…Green matter and dry matter yield are directly correlated to the photosynthetic rate and consequently the production of photoassimilates by plants [11]. Similar to this study, no variability for dry matter yield was found in millet genotypes [12].…”

Section: Resultssupporting

confidence: 87%

Phenotypic and Enzymatic Analyses of Upland Rice Lines Seeds under No-Tillage

Santos¹,

Botelho²,

Uenojo³

et al. 2015

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Over 40% of the agricultural area in Brazil corresponds to no-tillage farming. Although it is evident the importance of obtaining upland rice cultivars adapted to this cropping system, researches in this sense are still incipient and breeders do not have cultivars available to recommend with enough security. The aim of this study was to evaluate phenotypic characters favorable to the no-tillage system in order to establish the basis for upland rice breeding programs interested in this cropping system. The seeds of twenty elite inbred lines from the Upland Rice Breeding Program from the Brazilian research institutions UFLA, EMBRAPA and EPAMIG were evaluated at the Central Seeds Lab from the Agriculture Department of UFLA following a randomized block design with four replicates. The characters evaluated were seedlings emergence (SE), green matter yield (GM), dry matter yield (DM), photosynthetic activity (PA), and superoxide dismutase activity (SOD). The quality parameters evaluated were obtained by a germination test (GT), germination first count (GFC), emergence test (E), initial stand (IS), and alpha-amylase expression. The lines CMG 2074, CMG 1967, CMG 2017, BRSMG Caravera and CMG 2097 showed higher SOD content in the enzymatic analyses, and consequently higher tolerance to abiotic stresses that could be caused by no-tillage. Considering the evaluation of agronomic traits, the line CMG 1967 showed the best performance in no-tillage soil and, therefore, should receive higher attention in Upland Rice Breeding Programs.

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Section: Resultssupporting

confidence: 87%

Phenotypic and Enzymatic Analyses of Upland Rice Lines Seeds under No-Tillage

Santos¹,

Botelho²,

Uenojo³

et al. 2015

AJPS

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“…e as cultivares de dias neutros possuem menor sensibilidade a esses estímulos ao fotoperíodo e à temperatura que exercem sobre a emissão de estolões (StRASSBuRGeR et al, 2010). é possível então que a menor produção de estolões destas duas cultivares esteja ligada ao fato de serem as únicas do grupo que são de dias neutros.…”

Section: Resultsunclassified

“…o início da colheita dos frutos (PRC) variou de 65,00 a 89,25 dias, sendo que, as dover, Festival e toyonoka, diferiram das demais, e que as cultivares Aromas e diamante foram as que foram colhidas primeiro (tabela 3). tal resultado não surpreende, uma vez que cultivares de dias neutros possuem a habilidade de emitir flores independentemente do fotoperíodo e da temperatura (StRASSBuRGeR et al, 2010 o que chama mais a atenção é a divergência entre a produtividade obtida em Guarapuava e as obtidas para as mesmas cultivares no presente trabalho, talvez pelo fato de os autores terem feito a conversão para um estande diferente do utilizado no presente trabalho. As divergências para as demais estimativas estão dentro do esperado, considerandose que as condições climáticas e edáficas, incluindo-se as condições de cultivo e condução dos experimentos, foram diferentes.…”

Section: Resultsunclassified

Potencial Produtivo De Cultivares De Morangueiro

et al. 2015

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RESUMO-o objetivo foi avaliar o potencial produtivo de cultivares de morangueiro em região representativa do Alto Jequitinhonha. o experimento foi conduzido na fazenda Mape Frutas ltda., localizada no município de datas-MG, em delineamento em blocos ao acaso, com oito cultivares de morangueiro em quatro repetições, para verificar a produção de mudas e de frutos. A contagem da produção de estolões e de mudas foi realizada aos 180 dias após o plantio. A avaliação das variáveis relacionadas à produção de frutos foi feita duas vezes por semana, no período de maio a outubro de 2012. das cultivares de dias curtos (Festival, Campinas, toyonoka, dover, oso Grande e Camarosa) e dias neutros (diamante e Aromas), apenas toyonoka foi a que apresentou menor desempenho para as variáveis. A significativa superioridade das cultivares Camarosa e Festival, para praticamente todas as variáveis avaliadas, permite recomendá-las para regiões com características edafoclimáticas semelhantes às da região onde o experimento foi conduzido. dentre as cultivares avaliadas, as mais precoces tenderam a apresentar maior desempenho para variáveis relacionadas à produção de frutos. Termos para Indexação: Fragaria x ananassa duch, colheita, rendimento. PRODUCTIVE POTENTIAL OF STRAWBERRY CULTIVARSABSTRACT -this study was conducted in order to evaluate the productive potential of strawberry cultivars in a representative region of Alto Jequitinhonha -Brazil. the experiment was conducted at farm Mape Frutas ltda, located in the municipality of dates, MG, in randomized block design with eight strawberry cultivars in four replications to verify the production of seedlings and fruit. Counting of production of stolons and seedlings was performed at 180 days after planting. the assessment of variables related to fruit production was done twice a week from May to october 2012. Cultivars of short days (Festival, Campinas, toyonoka, dover, oso Grande and Camarosa) and day neutral (diamante and Aromas), only Toyonoka showed the lowest performance for the variables. The significant superiority of the cultivars Camarosa and Festival for virtually all variables allows recommends it for regions with similar climatic edaphic characteristics of the region where the experiment was conducted. Among the cultivars, the earlier tended to have higher performance for variables related to fruit production.

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“…In addition to the PSC factor, the strawberry cultivar tends to present greater vegetative growth and emit stolons under high temperature conditions, consequently decreasing yield, in particular among short-day cultivars, which are more sensitive to these conditions (Strassburger et al, 2010). Thus, the use of soil cover materials such as white PSC is an alternative to help reduce soil temperature and favor the reproductive development of strawberry, particularly in regions of subtropical climate, where temperatures in the production months are high.…”

Section: Experiments I: Short-day Cultivars X Plastic Soil Cover (Psc)mentioning

confidence: 99%

Plastic soil covers in vegetative development, production and quality of strawberries

et al. 2020

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Plastic soil covers in vegetative development, production and quality of strawberries The purpose this study was to evaluate the vegetative development, yield and quality of strawberry cultivars of short and neutral days as a function of soil cover. Two experiments were carried out in a protected environment. The experimental design used in both experiments consisted of randomized blocks, with subdivided plots. Harvests were carried out every two days, when the berries presented 75% of the red coloration of the epidermis, with evaluation of yield, number of fruits/plant, and fresh biomass of the fruits. For fruit quality, the pH, SS, titratable acidity, SS/TA ratio and fruit staining were evaluated. The contents of chlorophyll a and b, chlorophyll a + b and the chlorophyll a/b ratio in the leaves were also measured. At the end of the productive cycle, destructive evaluations of leaf number, leaf area and dry biomass of shoot were carried out. Cultivation on white PSC presented plants with lower vegetative development, higher yield, and fruit size. Among the cultivars of short days, Camino Real presented bigger and more attractive fruits regarding the appearance of color of epidermis. For neutral day cultivars, Aromas obtained higher yield.

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Crescimento e produtividade de cultivares de morangueiro de "dia neutro" em diferentes densidades de plantio em sistema de cultivo orgânico

Cited by 25 publications

References 17 publications

Phenotypic and Enzymatic Analyses of Upland Rice Lines Seeds under No-Tillage

Phenotypic and Enzymatic Analyses of Upland Rice Lines Seeds under No-Tillage

Potencial Produtivo De Cultivares De Morangueiro

Plastic soil covers in vegetative development, production and quality of strawberries

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