Efeitos do estresse hídrico sobre o desempenho germinativo da semente de faveira (Clitoria fairchildiana R.A. Howard. - Fabaceae) de diferentes tamanhos

Silva, Breno Marques da Silva e; Carvalho, N. M.

doi:10.1590/s0101-31222008000100008

Cited by 24 publications

(17 citation statements)

References 21 publications

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“…In the substrates L and L+B an average speed emergence index of 0.162 and 0.068 were obtained, respectively, in which the first higher values, were observed in 50% of water retention and for the last, no significant difference between the treatments tested were observed ( Figure 1C). For the percentage of germination of Clitoria fairchildiana, also a native species, Silva & Carvalho (2008) verified maximum point average around 49.1% of water retention of the substrate. From that point, the germination speed index decreased with the increasing of substrate wetting.…”

Section: Introductionmentioning

confidence: 76%

Emergence and initial growth of Hancornia speciosa (Gomes) seedlings with different substrates and water availability

Gordin¹,

Marques²,

Scalon³

2016

RCA

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Hancornia speciosa is a promising fruit species due to the high protein content of its fruit. However, there is little information about its production, with a lack of information concerning the germination of its seeds and initial seedling growth. The aim of this study was to evaluate water availability and suitable substrates for its seedling emergence and production. The seeds were deposited in tubes, containing the following substrates: Distroferric Red Latosol (L); Latosol+Sand (L+A); Latosol+Bioplant  (L+B); Sand+Latosol+Poultry Litter in the following proportions 2:2:1 (L+A+C 1 ) and 2:4:1 (L+A+C 2 ) associated with water retention capacities of 25%, 50%, 75% and 100%. The substrates L+A, L+B and L and a water availability of 75% to 100% are recommendable for seedling emergence and early seedling growth. Substrates that consisted of poultry litter and water availability of 25% and 50% were prejudicial to growth and quality of Hancornia speciosa seedlings. RESUMO:A mangabeira é uma frutífera promissora em razão do alto conteúdo de proteínas de seus frutos. Entretanto, há poucas informações a respeito da produção dessa espécie, necessitando-se de informações referentes à germinação das sementes e ao crescimento inicial de plântulas. Assim, objetivou-se, com este trabalho, avaliar as disponibilidades hídricas e substratos adequados para emergência de plântulas e produção. As sementes foram depositadas em L podem ser recomendados para a emergência e crescimento inicial de plântulas de mangabeira nas disponibilidades hídricas de 75% a 100%. Substratos compostos por cama-de-frango e disponibilidades de água de 25% e 50% prejudicam o crescimento e a qualidade das mudas de mangabeira.Emergence and initial growth of Hancornia speciosa (Gomes) seedlings with different substrates and water availability Emergência e crescimento inicial de plântulas de Hancornia speciosa (Gomes) em diferentes substratos e disponibilidades hídricas

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Section: Introductionmentioning

confidence: 76%

Emergence and initial growth of Hancornia speciosa (Gomes) seedlings with different substrates and water availability

Gordin¹,

Marques²,

Scalon³

2016

RCA

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“…Ao contrário, a porcentagem de germinação das sementes de faveira não são afetadas pelo tamanho de suas sementes (Silva & Carvalho, 2008 1949; Bianchetti, 1989;Flores & Benavides, 1990;Francis, 1990;Francis & Rodriguez, 1993;Ferreira & Sampaio, 1999;Azeredo et al, 2003;Melo & Mendes, 2005). No entanto, para sementes de jutaí, não houve diferença significativa entre as escarificações com lixa no hilo e do lado oposto ao hilo da semente quando comparados em relação à porcentagem de germinação, índice de velocidade de germinação e parâmetros biométricos das plântulas (Tabela 2 e 3).…”

Section: Resultsunclassified

Germinação de sementes e emergência de plântulas de jutaí (Hymenaea parvifolia Huber.)

Silva

Cesarino

2016

Rev. bras. plantas med.

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Recebido para publicação em 29/09/2015 Aceito para publicação em 02/01/2016 RESUMO: O objetivo do presente trabalho foi avaliar a influencia do tamanho e da temperatura na germinação das sementes, assim como, da posição de escarificação do tegumento e a profundidade de semeadura na emergência de plântulas de jutaí. As sementes foram separadas em três grupos: sementes pequenas, médias e grandes. A germinação das sementes foram realizadas nas temperaturas de 5, 10, 15, 20, 25, 30, 35, 40 e 45 °C e com fotoperíodo de 12 horas. As sementes escarificadas foram colocadas para germinar em 0, 2, 4 e 6 cm de profundidade de semeadura. As sementes médias e grandes apresentaram maiores porcentagens e índices de velocidade de germinação. A faixa de temperatura ótima de germinação está entre 25 e 35°C. A escarificação no hilo da semente ou não é adequada para quebra de dormência de sementes de jutaí. Profundidades de semeadura iguais ou superiores a 4 cm são inadequadas para a emergência de plântulas de jutaí.Palavras-chave:Leguminosae,tamanho de semente,temperatura, escarificação do tegumento, profundidade de semeadura. ABSTRACT: Seed germination and emergence of jutai (Hymenaea parvifolia Huber.)seedlings. The objective of this study was to evaluate the influence of seed size and temperature on seed germination, as well as the scarification position of the tegument and sowing depth on the emergence of jutai seedlings. The seeds were separated into three groups: large, medium and small. The temperatures to which the seeds were subjected for germination were 5, 10, 15, 20, 25, 30, 35, 40, and 45°C under a photoperiod of 12 hours. The scarified seeds were placed to germinate at depths of 0, 2, 4, and 6 cm. Seed germination was affected by seed size (large and medium seeds). The optimum temperature range was found to be between 25 and 35°C. The scarification in the hilum or the tegument was enough to break the dormancy of the jutai seeds. Sowing depths equal to or deeper than 4 cm were found to be inadequate for the emergence of jutai seedlings.

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“…Water stress affected seed germination and seedling vigor of faveira (Clitoria fairchildiana R. Howard, Fabaceae), a widely used tree species in reforestation projects that is recommended for the recovery of degraded areas due to its utility as green manure. Water excess reduced the total amount and the speed of seed germination, whereas the lack of water reduced seedling growth (Silva & Carvalho, 2008).…”

Section: Specific Examples For Semiarid Plants Under Water Stressmentioning

confidence: 96%

Physiological and Biochemical Responses of Semiarid Plants Subjected to Water Stress

Oliveira¹,

Alencar²,

Gomes-Filho³

2012

Water Stress

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Efeitos do estresse hídrico sobre o desempenho germinativo da semente de faveira (Clitoria fairchildiana R.A. Howard. - Fabaceae) de diferentes tamanhos

Cited by 24 publications

References 21 publications

Emergence and initial growth of Hancornia speciosa (Gomes) seedlings with different substrates and water availability

Emergence and initial growth of Hancornia speciosa (Gomes) seedlings with different substrates and water availability

Germinação de sementes e emergência de plântulas de jutaí (Hymenaea parvifolia Huber.)

Physiological and Biochemical Responses of Semiarid Plants Subjected to Water Stress

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