GA4+7+ N-(Fenilmetil)-aminopurina na germinação de sementes e emergência de plântulas de Passiflora cincinnata Mast.

Zucareli, Valdir; Ferreira, Gisela; Amaro, Amanda Cristina Esteves; Fazio, Juliana Leticia De

doi:10.1590/s0100-29452009000100030

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…Among the concentrations, only the value of recently harvested seeds in the control treatment (0%) was inferior to the others ( Figure 3A). The results of number of leaves agree with those of Zucareli et al (2009b), who observed greater increment in number of leaves at the concentration of 300 mg L -1 , which corresponds to 0.03% of GA 4+7 + N-(phenyl methyl)-aminopurine. Thus, it can be inferred that the low concentration of the growth regulator (0.03%) is sufficient to overcome the dormancy of the seeds, because the best results for most of the analyzed variables occurred at this concentration.…”

Section: Resultssupporting

confidence: 89%

Overcoming dormancy in stored and recently harvested Passiflora cincinnata Mast. seeds

Moura¹,

Filho²,

Gheyi³

et al. 2018

Biosci. J.

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The treatment of seeds using growth regulators can overcome seed dormancy and increase the emergence and development of seedlings. The objective of this research was to evaluate the effect of different concentrations of GA 4+7 + N-(phenyl methyl)-aminopurine on the dormancy breaking of Passiflora cincinnata Mast. seeds recently harvested and stored for six years. The study was conducted in a greenhouse at Embrapa Cassava and Tropical Fruits, in completely randomized design, in a 2 x 4 factorial scheme, with the following factors: year of seed harvest (2010 and 2016) and the emergence promoter GA 4+7 + N-(phenyl methyl)-aminopurine at four concentrations (0%; 0.03%; 0.45% and 0.90%), with 4 replicates of 25 seeds. Emergence percentage, first count, emergence speed index, number of leaves, root length, stem diameter, dry matter of shoots, roots and total, and root/shoot ratio were evaluated. The results showed that GA 4+7 + N-(phenyl methyl)-aminopurine is recommended to overcome dormancy of Passiflora cincinnata in recently harvested seeds (2016) and increase the emergence of seedlings from seeds stored for six years in cold chamber (2010). The emergence promoter concentration of 0.03% can be used to overcome dormancy in recently harvested seeds and maintains the vigor of seeds stored for six years. Passiflora cincinnata seeds remain physiologically viable for six years and their emergence is potentiated by the use of GA 4+7 + N-(phenyl methyl)-aminopurine.

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Section: Resultssupporting

confidence: 89%

Overcoming dormancy in stored and recently harvested Passiflora cincinnata Mast. seeds

Moura¹,

Filho²,

Gheyi³

et al. 2018

Biosci. J.

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“…According to Meletti et al (2002), seed storage for more than two years plus heat treatment are ways of reaching acceptable rates of germination. In addition, pretreating seeds stored for one year with regulators GA4 +7+N-(phenyl-methyl)-aminopurine is also effective for raising the emergency P. cincinnata seeds (ZUCARELI et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Morphophysiological Analysis of Passion Fruit Plants From Different Propagation Methods and Planting Spacing

et al. 2016

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-The passion fruit (Passiflora cincinnata Mast.) is a perennial and drought resistant species that represents a new alternative crop for small farmers in rainfed conditions. This study aimed to evaluate the vegetative and physiological development of passion fruit plants derived from two propagation methods and grown at varied planting spacing. The experiment was conducted from January to June of 2012, in the Universidade Estadual do Sudoeste da Bahia (State University from Southwestern Bahia), in Brazil. It was carried out in a randomized block design under a 2 x 3 factorial scheme, which consisted of two propagation methods (cutting and seeds) and three planting spacing distances within a row (1.5; 3.0 and 4.0 m), however, at same distance between rows (3.0 m), with four replicates and four plants per plot. Cuttings and seeds were sampled from adult plants pre-selected in native areas from Vitória da Conquista -BA, Brazil. Growth (stem diameter and leaf area) and physiological parameters (leaf chlorophyll content, leaf water potential before dawn, relative water content and leaf gas exchange) were assessed on the 90 th , 120 th and 150 th day after transplanting of seedlings into the field (DAT). Based on our results, we concluded that despite plants propagated via cuttings showed most favorable water status, vegetative growth and photosynthetic capacity were lower whether compared to plants obtained from seeds.Keywords: Passiflora cincinnata Mast. Growth. Photosynthesis. Gas exchange. MORFOFISIOLOGIA DO MARACUJÁ-DO-MATO SOB DIFERENTES CONDIÇÕES DE PROPAGAÇÃO E ESPAÇAMENTOSRESUMO -O maracujá-do-mato (Passiflora cincinnata Mast.) é uma espécie perene, resistente à seca, podendo representar uma nova alternativa de cultivo para o pequeno agricultor em condições de sequeiro. O presente trabalho teve como objetivo avaliar o desenvolvimento vegetativo e fisiológico de plantas de maracujá -do-mato, sob diferentes condições de propagação e espaçamentos. O experimento foi conduzido no período de janeiro a junho de 2012, na Universidade Estadual do Sudoeste da Bahia, com o delineamento em blocos casualizados, em esquema fatorial 2 x 3, constituído por dois métodos de propagação e três espaçamentos de plantio na linha (3,0 x 1,5; 3,0 x 3,0 e 3,0x 4,0 m) permanecendo constantes as distâncias entre as linhas de plantio de 3,0 m, com quatro repetições e quatro plantas por parcela. As estacas e sementes foram coletadas de plantas adultas selecionadas em áreas nativas de Vitória da Conquista-BA. Foram realizadas avaliações de crescimento (diâmetro do caule e área foliar) e fisiológicas (teor de clorofila na folha, potencial hídrico foliar antemanhã, teor relativo de água e trocas gasosas foliares) aos 90, 120 e 150 dias após transplantio das mudas no campo (DAT). Nas condições em que o trabalho foi conduzido conclui-se que apesar da manutenção de status hídrico mais favorável das plantas propagadas via estaquia, o desenvolvimento vegetativo e a capacidade fotossintética são reduzidas quando comparadas aos de plantas ...

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“…Due to the hindrances of seed germination, several studies have been developed in order to study the germination of Passiflora spp. [5,14]. However, the Passifloraceae family presents high potential as rootstocks because they are resistant to foliar and soil diseases [15], demonstrating the need for studies regarding the overcoming of seed dormancy.…”

Section: Introductionmentioning

confidence: 99%

Performance of sweet passion fruit seeds submitted to pre-germination treatments

et al. 2020

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Brazil is the world's largest consumer and producer of passion fruit (Passiflora spp.). Its fruit is widely accepted by consumers mainly in terms of natura consumption, juices, and medicines. However, these plants are spread mainly via seminiferous propagation, in which low and uneven seed germination is verified. The objective of this work was to study seed performance and initial growth of Passiflora alata Curtis seedlings as a function of pre-germination treatments. Seeds of P. alata extracted from mature fruits harvested were used and manually extracted from the fruits, and the aryl was removed by rubbing in a stainless steel mesh sieve with quicklime, followed by drying in the shade on filter paper for 24 hours. The seeds were submitted to physical scarification and immersed in distilled water for 0; 24; 48; 72; 96; and 120 hours of stirring. The seed scarification method by cracking interferes negatively in the germination and initial growth of P. alata seedlings. Intact seeds had a higher percentage of germination as the stirring time of the seeds imbibed in water increased. The cracked seed treatment provided the highest averages when electrical conductivity was evaluated in the stirring time of 120 hours. Intact seeds immersed in distilled water with stirring for 120 hours provide greater germination and initial growth of P. alata Curtis seedlings.

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GA4+7+ N-(Fenilmetil)-aminopurina na germinação de sementes e emergência de plântulas de Passiflora cincinnata Mast.

Cited by 4 publications

References 7 publications

Overcoming dormancy in stored and recently harvested Passiflora cincinnata Mast. seeds

Overcoming dormancy in stored and recently harvested Passiflora cincinnata Mast. seeds

Morphophysiological Analysis of Passion Fruit Plants From Different Propagation Methods and Planting Spacing

Performance of sweet passion fruit seeds submitted to pre-germination treatments

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