Onset of germinability, desiccation tolerance and hardseededness in developing seeds of Peltophorum pterocarpum (DC) K. Heyne (Caesalpinioideae)

Mai-Hong, T.; Hong, T. D.; Hiền, Nguyễn Thị; Ellis, R. H.

doi:10.1079/ssr2003149

Cited by 23 publications

(17 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15 % in Peltophorum pterocarpum (Mai-Hong et al 2003), 12 % in Gleditsia triacanthos (Geneve 2009), G. aquatica (Geneve 2009), Gymnocladus dioicus (Geneve 2009), Lupinus arboreus (Hyde 1954), Trifolium ambiguum (Hay et al 2010), T. pretense (Hyde 1954) and T. repens (Hyde 1954), 11 % in L. digitatus (Gladstones 1958) and Geranium carolinianum (Gama-Arachchige et al 2011). However, the reason why some seeds develop impermeable coats, while others maturing on the same plant produce permeable seed coats remains unclear.…”

Section: Discussionmentioning

confidence: 99%

Relationship between seed moisture content and acquisition of impermeability in Nelumbo nucifera (Nelumbonaceae)

et al. 2017

View full text Add to dashboard Cite

Seeds of Nelumbo nucifera do not imbibe water, and thus have physical dormancy (PY). However, a proportion of seeds are permeable to water, and so we hypothesized that variation in moisture content is a reason for the development of both permeable and impermeable seeds. Th e permeable proportion of seeds present in a lot collected from Suzhou, China, was separated using an imbibition test. Th e permeable proportion had an average moisture content of 15.6 %, compared with 8.5 % for impermeable seeds. Drying permeable seeds above silica gel to 10 % and 8 % f. wb., resulted in 77 and 100 % impermeable seeds, respectively, compared with no impermeable seeds at 15 % moisture content. Dried to 10 % moisture content, and incubated above water in an airtight container, 46 % of the seeds reverse impermeability. Permeable seeds with 15 % moisture content maintained above LiCl 2 (RH=70 %) did not develop impermeability after three months of storage. Th e seeds dried to 6 % moisture content and stored above water in an airtight container showed no increase in moisture. Based on these results, we conclude that there is a strong relationship between moisture content and the onset of impermeability in this species.

show abstract

Section: Discussionmentioning

confidence: 99%

Relationship between seed moisture content and acquisition of impermeability in Nelumbo nucifera (Nelumbonaceae)

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Mai-Hong et al (2003) reported that hardseededness began to be induced when Peltophorum pterocarpum seeds were dried to about 15% moisture content and below, with a negative Relationship between seed moisture content (mc, %, f. wt.)…”

Section: Resultsmentioning

confidence: 99%

“…This equation has already been applied to forest species (Dickie et al, 1990;Medeiros et al, 1998;Bonner, 1999;Chaves & Usberti, 2004). However, viability constants are specific for each species and therefore must be determined for each species of economic, ecological and scientific interest.…”

Section: Introductionmentioning

confidence: 99%

Prediction of cottonseed longevity

Usberti¹,

Roberts

Ellis

2006

Pesq. agropec. bras.

View full text Add to dashboard Cite

-The objective of this work was to determine the viability equation constants for cottonseed and to detect the occurrence and depletion of hardseededness. Three seedlots of Brazilian cultivars and IAC-20 were tested, using 12 moisture content levels, ranging from 2.2 to 21.7% and three storage temperatures, 40, 50 and 65ºC. Seed moisture content level was reached from the initial value (around 8.8%) either by rehydration, in a closed container, or by drying in desiccators containing silica gel, both at 20ºC. Twelve seed subsamples for each moisture content/temperature treatment were sealed in laminated aluminium-foil packets and stored in incubators at those temperatures, until complete survival curves were obtained. Seed equilibrium relative humidity was recorded. Hardseededness was detected at moisture content levels below 6% and its releasing was achieved either naturally, during storage period, or artificially through seed coat removal. The viability equation quantified the response of seed longevity to storage environment well with K E = 9.240, C W = 5.190, C H = 0.03965 and C Q = 0.000426. The lower limit estimated for application of this equation at 65 o C was 3.6% moisture content.Index terms: Gossypium hirsutum, seed storage, hardseededness, viability equation. Previsão da longevidade de sementes de algodoeiroResumo -O objetivo deste trabalho foi determinar as constantes da equação de viabilidade de sementes de algodoeiro e detectar a ocorrência de sementes duras. Três lotes de sementes das cultivares IAC-19 e IAC-20 foram testados, usando 12 níveis de umidade, entre 2,2 e 21,7% e três temperaturas de armazenamento, 40, 50 e 65ºC. O grau desejado de umidade das sementes foi alcançado, a 20ºC, a partir do valor inicial (em torno de 8,8%), por reidratação, em um recipiente fechado, ou por desidratação em dessecadores com sílica gel. Doze subamostras de sementes para cada tratamento de umidade/temperatura foram acondicionadas, em embalagens de alumínio multifoliadas, e armazenadas naquelas temperaturas, até a obtenção de curvas completas de deterioração. A umidade relativa de equilíbrio das sementes foi registrada. A presença de sementes duras foi detectada em umidades abaixo de 6% e a sua liberação foi alcançada durante o armazenamento ou por meio da remoção do tegumento da semente. A equação de viabilidade calculada foi eficaz em quantificar a resposta da longevidade das sementes em relação às condições de armazenamento por meio de K E = 9,240, C W = 5,190, C H = 0,03965 e C Q = 0,000426. O limite inferior estimado para aplicação dessa equação a 65 o C foi 3,6% de umidade.Termos para indexação: Gossypium hirsutum, armazenamento, sementes duras, equação de viabilidade.

show abstract

“…The development of seeds (or fruits) with PY has been described for Rhus aromatica and Rhus glabra (Anacardiaceae) (Li et al . 1999); several Fabaceae species, including Peltophorum pterocarpum (Mai‐Hong et al . 2003); Bixa orellana (Bixaceae) (Yogeesha et al .…”

Section: Introductionmentioning

confidence: 99%

Whole‐seed development in Sicyos angulatus (Cucurbitaceae, Sicyeae) and a comparison with the development of water‐impermeable seeds in five other families

Qu¹,

Baskin²,

Baskin

2010

Plant Species Biology

View full text Add to dashboard Cite

Sicyos is the only member of the Cucurbitaceae known to have water-impermeable seeds, that is, physical dormancy (PY), and development of seeds with PY has not been studied in detail in this family. Our primary aim was to describe seed development in Sicyos angulatus from pollination to seed maturity and to compare it with the development of water-impermeable seeds in other families reported in the literature. Full seed stage (highest moisture content [MC]) occurred 4-6 days after pollination (DAP) and physiological maturity occurred 20 DAP. Seeds became water impermeable 32 DAP, with 14.6% MC. The hilum was the site of water loss during the final stage of maturation drying. Excised embryos could germinate from 20 DAP to 36 DAP, whereas no intact seeds germinated during any stage of seed development. Mechanical scarification did not promote germination of seeds after the seed coat became water impermeable at 32-36 DAP. Based on a previous study of seed dormancy and germination in S. angulatus, we suggest that germination in these scarified seeds may have been prevented by resistance of inner membrane and fruit-seed coat to embryo expansion. The MC when seeds became impermeable (14.6%) is in the range of that reported for seeds of species in five other families with PY. Information on seed development in S. angulatus will be useful in planning the timing of management strategies for this pernicious annual weed.

show abstract

Onset of germinability, desiccation tolerance and hardseededness in developing seeds of Peltophorum pterocarpum (DC) K. Heyne (Caesalpinioideae)

Cited by 23 publications

References 9 publications

Relationship between seed moisture content and acquisition of impermeability in Nelumbo nucifera (Nelumbonaceae)

Relationship between seed moisture content and acquisition of impermeability in Nelumbo nucifera (Nelumbonaceae)

Prediction of cottonseed longevity

Whole‐seed development in Sicyos angulatus (Cucurbitaceae, Sicyeae) and a comparison with the development of water‐impermeable seeds in five other families

Contact Info

Product

Resources

About