Desempenho de genótipos de mamoeiro quanto à qualidade física e fisiológica de sementes e análises de diversidade

Mengarda, Liana Hilda Golin; Lopes, José Carlos; Zanotti, Rafael Fonsêca; Alexandre, Rodrigo Sobreira

doi:10.14393/bj-v31n3a2015-23852

Cited by 3 publications

(3 citation statements)

References 15 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Possibly, since the radicle is located in a region slightly more external in the seed compared to the hypocotyl, its exposure to drying and to the deterioration processes was more evident, indicating that the performance of the root constitutes a good indication in distinguishing among seed lots, as has already been proposed by Vanzolini et al (2007) and recommended by Chauhan (1985) precisely for soybean seeds, and as observed for seeds of wheat (Maia et al, 2007), maize (Venancio et al, 2012), and papaya (Mengarda et al, 2015).…”

Section: Resultssupporting

confidence: 53%

The effect of drying temperatures and storage of seeds on the growth of soybean seedlings

et al. 2016

View full text Add to dashboard Cite

-Drying of seeds reduces their moisture content to levels appropriate for storage. However, care in the temperatures applied in the process is necessary to avoid damage to the seeds that are dried. The aim of this study was to evaluate the effect of different drying temperatures and storage on the growth of soybean seedlings. Harvested with a moisture content of approximately 23% (w.b.), the seeds were dried at different temperatures (40, 50, 60, 70, and 80 °C) until reaching moisture content of 12.5 ± 0.7% (w.b.), and they were subsequently stored for 180 days in an environment without climate control. A germination test and evaluations of seedling performance were carried out every 45 days, determining the full length of the seedling and hypocotyl and root lengths, along with their respective dry matter weights. The results showed that: a) the increase in the temperature of drying air affects the physiological quality of soybean seeds, and this effect is accentuated over time, especially on root length; and b) the air temperature of 40 °C can be recommended for drying of soybean seeds in association with the storage time of 180 days under storage conditions without climate control.Index terms: Glycine max L., germination, seed vigor, post-harvest.Temperaturas de secagem e armazenamento de sementes no crescimento de plântulas de soja RESUMO -A secagem de sementes permite reduzir o teor de água a níveis adequados para o armazenamento. Porém, cuidados com as temperaturas aplicadas no processo são necessários para evitar danos às sementes submetidas à secagem. O trabalho foi realizado com o objetivo de avaliar o efeito de diferentes temperaturas de secagem e do armazenamento sobre o crescimento de plântulas de soja. As sementes foram colhidas com aproximadamente 23% de teor de água, e submetidas a diferentes temperaturas de secagem (40, 50, 60, 70 e 80 °C) até atingirem 12,5 ± 0,7% (b.u.), sendo posteriormente armazenadas, em ambiente não controlado, durante 180 dias. A cada 45 dias foi realizado o teste de germinação e as avaliações referentes ao desempenho de plântulas, determinando-se os comprimentos total, do hipocótilo e da raiz, e ainda verificando suas respectivas massas de matéria seca. Com base nos resultados pôde-se concluir que: a) o aumento da temperatura do ar de secagem afeta a qualidade fisiológica das sementes, sendo esse efeito potencializado com o tempo de armazenamento, principalmente sobre o comprimento da raiz; b) a temperatura do ar de 40 °C pode ser recomendada para a secagem de sementes de soja, sendo associada ao período de armazenamento de 180 dias em condições não controladas.Termos para indexação: Glycine max L., germinação, vigor de sementes, pós-colheita.

show abstract

Section: Resultssupporting

confidence: 53%

The effect of drying temperatures and storage of seeds on the growth of soybean seedlings

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Isso, é de suma importância, uma vez que plantas maiores e com maior espessura possuem maior vigor e, consequentemente, melhor desenvolvimento. Mengarda et al (2015) obtiveram para o genótipo de mamão Golden médias de 4,9 cm para altura de plantas, 2,0 cm para comprimento da raiz e 2,24 cm para diâmetro de caule. A Figura 5 expressa o comportamento para o Número de Folhas dos diferentes tratamentos.…”

Section: Resultsunclassified

Métodos de remoção da sarcotesta para superação de dormência em sementes de mamão

Vale

Martins

Felix

et al. 2020

BJD

View full text Add to dashboard Cite

RESUMOO processo de propagação do mamoeiro é efetuado principalmente por meio das sementes, entretanto, a germinação é considerada lenta e desuniforme, devido a incidência de dormência. A análise de sementes constitui etapa fundamental em um sistema de produção de sementes, pois permite conhecer a real qualidade de um lote e, consequentemente, a tomada de decisões corretas em relação ao seu manejo. Objetivou-se avaliar métodos de remoção da sarcotesta para a superação de dormência em sementes de mamão papaya. O delineamento estatístico foi o inteiramente casualizado com oito tratamentos e quatro repetições. Os tratamentos consistiram em:

show abstract

“…The plant can be propagated by means of seeds, cutting, and grafting. However, seed propagation is widely preferred by the farmers, because it is more practical and economical (Mengarda et al, 2015). In general, this method enhances continuous production, allowing the harvesting of fruits in several stages of development and maturation (Lima et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Physiological maturation and postharvest resting of papaya fruits and seeds in agroecological transition

Melo

Rezende

et al. 2019

Aust J Crop Sci

View full text Add to dashboard Cite

This study aimed to characterize the maturation stages of the papaya fruits and to evaluate the physiological quality of papaya seeds produced in an agroforestry system as a function of postharvest maturation. Papaya fruits were used (Carica papaya L.) from two groups, Formosa Tainung 1 and Solo Sunrise Solo, harvested at maturation stage I (up to 15% of the yellow bark). The seeds were obtained, without sarcotesta: soon after harvest (T 1 ); 14 days after standing at room temperature (T 2 ); and 14 days after standing at 10 °C (T 3 ). The variables analyzed included: germination, first count, speed, and mean germination time and length of seedlings. The experimental design was completely randomized, in a 2 × 3 factorial scheme (2 groups and 3 rest periods), with 4 replicates of 50 seeds for each treatment. The papaya fruits produced maximum germinating seed in a less average time at room temperature and maturation stage V and the final stage (76%-100% of the yellow bark), allowing maximum number of seedlings with greater vigor. Fruits in stage I impaired the physiological quality of the seeds. The agroecological production presented a systemic approach in the management of papaya.

show abstract

Desempenho de genótipos de mamoeiro quanto à qualidade física e fisiológica de sementes e análises de diversidade

Cited by 3 publications

References 15 publications

The effect of drying temperatures and storage of seeds on the growth of soybean seedlings

The effect of drying temperatures and storage of seeds on the growth of soybean seedlings

Métodos de remoção da sarcotesta para superação de dormência em sementes de mamão

Physiological maturation and postharvest resting of papaya fruits and seeds in agroecological transition

Contact Info

Product

Resources

About