Vertical growth of mini watermelon according to the training height and plant density

Campagnol, Rafael; Mello, Simone da Costa; Barbosa, José Carlos

doi:10.1590/s0102-05362012000400027

Cited by 20 publications

(36 citation statements)

References 23 publications

(3 reference statements)

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“…Following recommendations for the cultivation of seedless varieties, a 3:1 ratio between triploid and diploid varieties was used in dedicated rows (Dittmar et al, 2009). On the seventeenth day after transplanting, staking was done with a plastic trellis for vertical conduction of plants, a procedure that facilitates crop management in greenhouse conditions (Campagnol et al, 2012). Throughout cultivation, plants were drip fertigated, and provided with a suitable amount of water and nutrients for each growth stage.…”

Section: Methodsmentioning

confidence: 99%

“…The quantification of the number of fruit sets was conducted three days after the pollination treatments and then at harvest. Only one fruit per plant was allowed; therefore, the exceeding fruits were removed during the early days of development, in order to not affect the development and setting of the first fruit (Walters, 2005;Campagnol et al, 2012).…”

Section: Methodsmentioning

confidence: 99%

“…The arrival of these new varieties, such as mini watermelons, make feasible the cultivation of this vegetable in protected environments, which make it possible to minimize losses in yield, improve fruit quality, and provide early or out-of-season harvest (Seabra Júnior et al, 2003;Cruz & Campos, 2009;Campagnol et al, 2012). However, watermelon plants do not produce fruits without a pollination agent (Walters, 2005;, and this artificial environment blocks the entrance of natural pollinators in the system (Cruz & Campos, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Pollination requirements of seeded and seedless mini watermelon varieties cultivated under protected environment

Bomfim

Bezerra

Nunes

et al. 2015

Pesq. agropec. bras.

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-The objective of this work was to evaluate the floral biology and pollination requirements of seeded and seedless mini watermelon varieties, and to determine the best varieties to cultivate under protected environment. Three seedless and two seeded (Minipol and Polimore) genotypes were tested. Flowers were monitored from the pre-anthesis stage to senescence, and fruit quality was also evaluated. The evaluated treatments were hand-geitonogamous pollination (MG), cross-pollination with pollen from the Polimore variety (MCP), cross-pollination with pollen from the Minipol variety (MCM), and restricted pollination. All varieties had monoecious plants with diclinous flowers, and the stigmas remained receptive throughout anthesis. Fruit set rates of 84.62% (MG), 61.54% (MCP), 48% (MCM), and 0% (restricted) were obtained for seeded varieties, but of 0% (MG), 76.36% (MCP), 82.69% (MCM), and 0% (restricted) for seedless varieties. Fruits did not differ in quality among treatments within each genotype. Therefore, all the studied varieties require a pollination agent and diploid pollen for fruit set to occur, regardless of the donor variety; and Minipol or Polimore with HA-5106 or HA-5158 are the varieties recommended for cultivation in protected environment.Index terms: Citrullus lanatus, flowering, fruit quality, fruit set, greenhouse. Requerimentos de polinização de variedades de minimelancia com e sem semente cultivadas em ambiente protegidoResumo -O objetivo deste trabalho foi avaliar a biologia floral e os requerimentos de polinização de variedades de minimelancia com e sem sementes, e determinar as melhores variedades para cultivo em ambiente protegido. Três genótipos sem semente (HA-5106, HA-5158 e HA-5161) e dois com semente (Minipol e Polimore) foram testados. As flores foram monitoradas da pré-antese à senescência, e a qualidade dos frutos também foi avaliada. Avaliaram-se tratamentos de polinização manual por geitonogamia (MG), de pólen cruzado da variedade Polimore (MCP), de pólen cruzado da variedade Minipol (MCM) e de polinização restrita. Todas as variedades apresentaram plantas monoicas e flores díclinas, e os estigmas permaneceram receptivos durante toda a antese. Foram obtidas taxas de vingamento de 84,62% (MG), 61,54% (MCP), 48% (MCM) e 0% (restrita) para as variedades com semente, mas de 0% (MG), 76,36% (MCP), 82,69% (MCM) e 0% (restrita) para aquelas sem semente. Os frutos não diferiram quanto à qualidade entre os tratamentos dentro de cada genótipo. Portanto, todas as variedades estudadas requerem um agente polinizador e pólen diploide para o vingamento de frutos, independentemente da variedade doadora; e Minipol ou Polimore com HA-5106 ou HA-5158 são as variedades recomendadas para cultivo em ambiente protegido.Termos para indexação: Citrullus lanatus, florescimento, qualidade dos frutos, vingamento de frutos, casa de vegetação.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pollination requirements of seeded and seedless mini watermelon varieties cultivated under protected environment

Bomfim

Bezerra

Nunes

et al. 2015

Pesq. agropec. bras.

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“…Although Brazil is the world's fourth largest watermelon producer, the biggest challenge is the low average productivity (22,5 t ha -1 ) (Guo et al, 2013), which ranks the Country the 38 th worldwide producer (Campagnol et al, 2012;Fao, 2010;Agrianual, 2014). In order to achieve better performance, adjust agricultural management to meet market demands concerning quantity and quality is essential.…”

Section: Researchmentioning

confidence: 99%

Influences of plant density and fruit thinning on watermelon hybrid production cultivated in different seasons

Campos¹,

Luz

Santana

et al. 2019

Hortic. Bras.

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Brazilian watermelon productivity is not efficient when compared to the largest producer countries, due to abiotic and biotic factors. Some of the difficulties are because of a small number of studies on this crop in Brazil. The aim of this study was to evaluate the effects of plant density and fruit thinning on two commercial watermelon hybrids (Talisman and Youlie), using trials which were carried out in two different seasons (April - July and August - November). The experiment was conducted in Uberlândia-MG and consisted of two managements of fruit position (A-basal and B-distal) and four plant densities (3,000, 4,000, 5,000 and 6,000 plants/ha). In season 1, the distal management was the most productive in relation to all cultivation densities. The distal management shows higher productivity in both hybrids, with greater increase in mass, productivity and 0Brix content in hybrid Talisman, however with lower density, firmness and internal cavity compared to hybrid Youlie. Weather conditions determined the influence of fruit management on watermelon crop. Cultivation during the hottest period and with a better water supply (season 2), basal management (A) showed a performance similar to the distal management. At this time, hybrid Talisman surpassed hybrid Youlie concerning productivity, average mass, fruit density, firmness and internal cavity. In both seasons, higher densities are related to higher productivities. Hybrid Talisman showed higher productivity in cultivation from April to July (season 1) under distal fruit management.

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“…Plants were trellised to facilitate management of this crop in a protected environment greenhouse. As suggested by Mohr (1986) and Campagnol et al (2012), only one fruit was allowed to develop on each plant, so that later developing fruits would not influence the development of the first fruit. Thus, additional fruits that set were removed during their early days of development.…”

Section: Site and Agricultural Practicesmentioning

confidence: 99%

Adaptive and Foraging Behavior of Two Stingless Bee Species in Greenhouse Mini Watermelon Pollination

Bomfim¹,

Bezerra²,

Nunes³

et al. 2015

Sociobiology

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The growth of protected cultivation in world agriculture has led to crops traditionally cultivated in open field to be grown in protected environments, but this condition creates a physical barrier which prevents the access of natural pollinators to flowers (Guerra Sanz, 2008). Hand pollinating the flowers in a protected environment, as well as the application of hormones to induce fruit production, is laborious and increases production costs (Cruz & Campos, 2009). Thus, a more economical alternative would be the introduction of native pollinators that are able to adapt to the conditions of closed environments and to meet the pollination requirements of crops under these conditions (Banda & Paxton, 1991; Cruz & Campos, 2009). The most promising pollinator in Brazil seems to be the stingless bees (subtribe Meliponina), since they occur

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Vertical growth of mini watermelon according to the training height and plant density

Cited by 20 publications

References 23 publications

Pollination requirements of seeded and seedless mini watermelon varieties cultivated under protected environment

Pollination requirements of seeded and seedless mini watermelon varieties cultivated under protected environment

Influences of plant density and fruit thinning on watermelon hybrid production cultivated in different seasons

Adaptive and Foraging Behavior of Two Stingless Bee Species in Greenhouse Mini Watermelon Pollination

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