Cereal seed viability after 10 years of storage in active and base germplasm collections

Ruíz, Magdalena; Martín, I.; Cuadra, Celia de la

doi:10.1016/s0378-4290(99)00044-1

Cited by 21 publications

(25 citation statements)

References 3 publications

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“…This shows that germination requirements may differ significantly between populations and are not species specific, as already highlighted by various authors (Meyer 1992;Walsh et al 2003;Walters et al 2005). This difference in germinability within the same species may reflect significant differences in storability of individuals (Ruiz et al 1999). The reasons for these differences are varied and may include a genetic basis (Walters et al 2005), and differences in sensitivity to environmental conditions or in degree of dormancy (Baskin and Baskin 1998).…”

Section: Variable Performance Between Populationssupporting

confidence: 66%

“…Our results showed that 28% of accessions had a dormancy index (according to Offord's et al (2004) equation) above 0.4. The fact that over a quarter of our accessions could exhibit some degree of dormancy is not in accordance with Ruiz et al (1999) and Offord et al (2004), who consider that seeds may lose over time (after 1-2 years in storage) their natural dormancy immediately following maturation on the plant. Indeed, after-ripening (dormancy break) can occur during dry storage, but in a few species, the opposite can happen as drying can cause seeds to enter dormancy (Baskin et al 2006).…”

Section: Dormancy Issuesmentioning

confidence: 53%

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Germination capacity and viability of threatened species collections in seed banks

2009

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Facing the current biodiversity crisis, the value of ex situ conservation has been increasingly acknowledged in international treaties and legislations. Seed banks are a good way of conserving biodiversity, providing that seeds are of high quality and at maximum viability. However, despite the number of established ex situ facilities, there is little information on seed viability in botanic garden seed banks. This paper analyses the status of the seed collection of the National Botanic Garden of Belgium by determining the germination capacity and viability of seeds that have been stored for 1-26 years. It aims at:(1) ensuring that existing storage conditions provide effective ex situ conservation of threatened species; (2) providing viability data on threatened species; (3) planning future collection and storage efforts for seeds of West European species of conservation value. Results from this study showed that the germination and viability percentages of the 250 tested species reached on average 59 and 79% respectively. Some families typically performed better than others. Within a species, consistent results were not always obtained. Over a quarter of accessions exhibited some degree of dormancy. Considering the current lack of knowledge in seed germination and dormancy of many rare and threatened species, we believe that the quality of a seed collection should be estimated by its viability and not by its germination percentage. This study calls for further research in order to better understand the biology of a range of threatened native species.

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Section: Variable Performance Between Populationssupporting

confidence: 66%

Section: Dormancy Issuesmentioning

confidence: 53%

Germination capacity and viability of threatened species collections in seed banks

2009

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“…Bogenschutz and Russell (1986) concluded that the method used to maintain the inbreds induces genetic variation. A limited number of works focused on viability of seed under storage conditions have been also published (Stanwood and Sowa 1995;Pita et al 1998;Ruiz et al 1999), though none about maize. These studies suggest that there is variability among genotypes for seed stability and viability under storage.…”

Section: Introductionmentioning

confidence: 99%

Variability Among Maize (Zea mays L.) Inbred Lines for Seed Longevity

Revilla

Velasco

Malvar

et al. 2005

Genet Resour Crop Evol

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Genotypes conserved in active collections may suffer genetic erosion and modifications. The objective of this work was to investigate changes in germination and vigour in maize (Zea mays L.) inbred lines during cold storage in an active collection. Seeds of 16 maize inbreds produced along 16 years were evaluated for emergence and seedling vigour in a growth chamber. Linear and quadratic regressions of vigour and viability-related traits over seed age were calculated and tested for homogeneity. The seed of five production years of five inbreds that behaved differently in the regression analysis was multiplied in 1998, and original and renewed seed were evaluated in a growth chamber in 1999. Viability and vigour decreased linearly with age for most inbreds, particularly for B84 and EP10, varied at random for a few inbreds, and remained high for EP56 and A295. Aging caused reduction of vigour and loss of viability in most inbreds. There was variability for seed longevity among inbred lines; longevity was highest for inbred EP56. During storage, some seeds of each inbred died, while enduring seeds, when multiplied, produced new seed with enhanced viability and vigour compared to the average seed of the inbred, suggesting natural selection for viability and vigour during storage within inbred lines.

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“…Face a sua importância, pesquisas visando a melhoria da tecnologia de produção vêm sendo realizadas, incluindo as que objetivaram a produção e a qualidade das sementes (Reis et al, 1992(Reis et al, , 1993Nakagawa et al, 1994Nakagawa et al, , 1996Nakagawa et al, , 2000Rossetto & Nakagawa, 1995;Schuch et al, 1999). Já os trabalhos relacionados com a conservação das sementes de aveia preta não foram localizados, mesmo na literatura internacional, embora tenham sido encontrados para a aveia branca (Avena sativa L.) (Andersen & Andersen, 1972Weidner et al, 1996;Pita et al, 1998;Ruiz et al, 1999).…”

Section: Introductionunclassified

Armazenamento de sementes de aveia preta produzidas em solos de diferentes fertilidades

Nakagawa

Cavariani

Castro

2004

Rev. bras. sementes

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O trabalho objetivou estudar o comportamento de sementes de aveia preta (Avena strigosa Schreber) cv. Comum, produzidas em três condições distintas de fertilidade de solo e armazenadas em quatro ambientes diferentes. Os lotes foram armazenados por 60 meses, acondicionados em sacos de papel unifoliado, nas condições de ambiente natural de laboratório, de câmara seca (30 a 40% de U.R.), de geladeira ( 5 a 7ºC) e de "freezer" (-20ºC). As avaliações do teor de água e da germinação foram realizadas em intervalos trimestrais. Sementes oriundas de solo de menor fertilidade apresentaram menor capacidade de armazenamento, notadamente no ambiente natural de laboratório, com zero porcento de germinação após 48 meses. As sementes produzidas em solo de maior fertilidade apresentaram germinação superior a 90% aos 60 meses, quando conservadas em geladeira ou "freezer". Os ambientes de geladeira e "freezer" mostraram-se mais favoráveis à conservação das sementes e o ambiente natural de laboratório o menos propício. A maior capacidade de conservação de sementes produzidas em solo de melhor fertilidade foi realçada em condições menos favoráveis de armazenagem.

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Cereal seed viability after 10 years of storage in active and base germplasm collections

Cited by 21 publications

References 3 publications

Germination capacity and viability of threatened species collections in seed banks

Germination capacity and viability of threatened species collections in seed banks

Variability Among Maize (Zea mays L.) Inbred Lines for Seed Longevity

Armazenamento de sementes de aveia preta produzidas em solos de diferentes fertilidades

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