The influence of temperature during seed development on the germination characteristics of millet seeds

Mohamed, H. A.; Clark, J. A.; Ong, C. K.

doi:10.1111/j.1365-3040.1985.tb01411.x

Cited by 14 publications

(6 citation statements)

References 5 publications

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“…Broad variability for germination and emergence under low temperature conditions is a great advantage in breeding sorghum for adaptation to temperate regions with potentially low early sowing temperatures (Knoll et al 2008;Burow et al 2011). Differences in germination rates between the two seed lots we used can be attributed to environmental conditions during the seed production (Mohamed, Clark & Ong 1985;Harris, Hamdi & Oda 1987;Blönder et al 2007;Elwell et al 2011). Seed weight was found not to influence cold emergence; however, reflecting previous results in sorghum and maize (Maranville & Clegg 1977;Hund et al 2004).…”

Section: Emergence and Seedling Establishment Are Important To Adapt supporting

confidence: 74%

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Unravelling the genetic complexity of sorghum seedling development under low‐temperature conditions

Bekele

Fiedler

Shiringani

et al. 2013

Plant Cell & Environment

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Sorghum is a promising alternative to maize for bioenergy production in Europe; however, its use is currently limited by poor adaptation to low temperatures during and after germination. We collected multi-trait phenotype data under optimal and suboptimal temperatures in a genetically diverse recombinant inbred line (RIL) mapping population showing contrasting segregation patterns for pre-and post-emergence chilling tolerance. Germination, emergence, seedling development, root architecture and seedling survival were assessed in two different seedlots. Emergence and root establishment were found to be the key determinants of development and survival under chilling stress. Highly interactive epistatic quantitative trait loci (QTL) hotspots, including a previously unknown QTL on Sb06 with a significant effect on prolonged chilling survival, were found to regulate different physiological mechanisms contributing to maintenance of growth and development despite the chilling temperatures. The major QTL regions harbour promising candidate genes with known roles in abiotic stress tolerance. Identification of loci in the QTL hotspot regions conferring maintenance of cell division and growth under early chilling stress represents a promising step towards breeding for successful establishment of sorghum in temperate climates.

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Section: Emergence and Seedling Establishment Are Important To Adapt supporting

confidence: 74%

“…). Differences in germination rates between the two seed lots we used can be attributed to environmental conditions during the seed production (Mohamed, Clark & Ong ; Harris, Hamdi & Oda ; Blönder et al . ; Elwell et al .…”

Section: Discussionmentioning

confidence: 99%

Unravelling the genetic complexity of sorghum seedling development under low‐temperature conditions

Bekele

Fiedler

Shiringani

et al. 2013

Plant Cell & Environment

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“…The reduction in dormancy brought about by warmer conditions during seed maturation is a very general phenomenon seen in a wide range of unrelated species, for example Dactylis glomerata (Probert et al, 1985), Beta vulgaris (Wood et al, 1980), Plantago lanceolata (Alexander and Wulff, 1985), Amaranthus retroflexus (Chadoeuf-Hannel and Barralis, 1983), Lactuca sativa (Koller, 1962), Festuca arundinacea (Boyce et al, 1976), and Anagallis arvensis (Grant Lipp and Ballard, 1963). In Pennisetum typhoides there is very little effect of developmental temperature in the range 22-31 °C, but a marked decline in germinability in seeds developed at 19°C (Mohamed et al, 1985). Perhaps the most intensively studied species is the wild oat, Avena fatua.…”

Section: Temperaturementioning

confidence: 99%

The effects of the parent environment on seed germinability

1991

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The growing conditions of a parent plant may affect the degree of dormancy of its seeds. This has been demonstrated in numerous species, both wild and cultivated. The evidence comes from field observations and controlled experiments. A survey of the literature shows that some well defined patterns emerge, with certain environmental factors tending to have similar effects over a wide range of species. Lower dormancy (i.e., increased germinability) is generally associated with the following environmental conditions during seed development: high temperatures, short days, red light, drought and high nitrogen levels. The effects are probably the result of changes in the quantity, mobility or activity of growth substances such as abscisic acid. The ecological implications of the phenomenon are briefly discussed.

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“…(Wiesner and Grabe, 1972) and Setaria spp. (Mohamed et al, 1985). High maturation temperatures are often associated with water stress, which has shown contrasting effects on seed dormancy.…”

Section: Introductionmentioning

confidence: 99%

The effects of different maturation conditions on seed dormancy and germination ofCenchrus ciliaris

Sharifzadeh

Murdoch

2000

Seed Sci. Res.

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Seeds ofCenchrus ciliarisL. were produced under different hydro–photo–thermal environments with and without fertilizer. Dormancy loss of spikelets and extracted caryopses was tested during dry after-ripening at 40°C and 43% equilibrium relative humidity. Caryopses had higher initial germination and lost their dormancy faster than spikelets. Dormancy of both caryopses and spikelets generally decreased with an increase of maturation temperature and fertility, whereas dormancy increased if water stress was imposed during maturation. The latter effect was smaller when the mother plants were exposed to water stress after caryopses were fully formed than when water stress cycles were applied throughout maturation. Daylength extension (to 14 or 18 h d-1) by artificial light increased dormancy of both caryopses and spikelets. The effect of long days declined when plants were exposed to natural daylight for more than 10 h d-1. The after-ripening curves were consistent with the hypothesis that dormancy periods of individual seeds are normally distributed within each seed lot. Rates of loss of dormancy were quantified by the slopes of these curves. In a given experiment, these rates were identical for caryopses but not always for spikelets that matured in diverse environments. Even for caryopses, however, the slopes varied between experiments. Therefore, the results do not support the hypothesis that a dormancy model can be applied universally to all seed lots ofCenchrus ciliaris. Methods of predicting the period of after-ripening required to achieve desired levels of dormancy for reseeding degraded rangelands are discussed.

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The influence of temperature during seed development on the germination characteristics of millet seeds

Cited by 14 publications

References 5 publications

Unravelling the genetic complexity of sorghum seedling development under low‐temperature conditions

Unravelling the genetic complexity of sorghum seedling development under low‐temperature conditions

The effects of the parent environment on seed germinability

The effects of different maturation conditions on seed dormancy and germination ofCenchrus ciliaris

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