Environmental Influences on Seed Size and Composition

Fenner, M.

doi:10.1002/9780470650509.ch5

Cited by 95 publications

(62 citation statements)

References 239 publications

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“…It is therefore very unlikely that sub-populations are established without spatial barriers (Gutterman 2000). Therefore, it is reasonable to believe that the interaction among environmental conditions experienced by the mother plant before seed set and those experienced by the seed after seed set accounts for a main part of the seasonal variation in dormancy level, which is in agreement with findings of Gutterman (2000) and Fenner (1992) in redroot pigweed. Another aspect which deserves attention is that germination velocity and germination capacity respond differently to the environmental conditions, storage time and date of harvest and what is optimal for one aspect may not necessarily be optimal for the other.…”

Section: Resultssupporting

confidence: 63%

“…Although environmental conditions modify seed dormancy level after dispersal , the dormancy level of mature seeds is regulated by the environmental conditions experienced by the parent plant during flowering induction and seed maturation (Fenner 1992;Martinez-Ghersa et al 1997;Baskin & Baskin 1998;Gutterman 2000;Costea et al 2004). In redroot pigweed, Kigel et al (1977Kigel et al ( , 1979 found that seeds set from plants grown on short days (8 h) lost dormancy more rapidly than those grown on long days (16 -18 h).…”

Section: Introductionmentioning

confidence: 97%

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Germinative response of redroot pigweed (Amaranthus retroflexusL.) to environmental conditions: Is there a seasonal pattern?

Cristaudo

Gresta

Restuccia

et al. 2014

Plant Biosystems - An International Journal Dealing with all As

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Experiments on redroot pigweed (Amaranthus retroflexus L.) were conducted to investigate whether the germinative response to environmental conditions is affected by the time of seed set. Seeds were collected in the same field (Sicily, Southern Italy) in May, July and October; each lot was dry-stored from 15 to 400 days after harvest (DAH) and submitted to germination assays from 15 to 408C, both in continuous darkness (D) and in alternate light/darkness regime (L/D). For the three lots, over 15 DAH, the response to temperature and light regime was strongly affected by harvesting time. Seeds set in May, negatively affected by L/D, showed a high germination capability (.80%) at 95 DAH from 25 to 408C. Seeds set in July were favoured by L/D and required at least 170 DAH to reach 80% germination capability. Seeds set in October were also favoured by L/ D and gave a good germination capability only at 300 and 400 DAH. These results prove that seed germination behaviour in redroot pigweed is not independent of the time of the year in which seeds are produced and is due to both the environmental conditions experienced by the mother plant during seed maturation and those experienced by seeds after seed set.

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Section: Resultssupporting

confidence: 63%

Section: Introductionmentioning

confidence: 97%

Germinative response of redroot pigweed (Amaranthus retroflexusL.) to environmental conditions: Is there a seasonal pattern?

Cristaudo

Gresta

Restuccia

et al. 2014

Plant Biosystems - An International Journal Dealing with all As

View full text Add to dashboard Cite

show abstract

“…As in most legumes, single individual pea plant or pod produces seeds differing in their appearance (Atak et al, 2008). In grain legumes, sequential development and spatial heterogeneity of the pod position can lead to significant differences in shape, size, weight and colour among the seeds (Fenner, 2010). Visual appearance is considered a main source of information for quality grading and can be broken down by image analysis to attributes such as size, colour, shape, defects and abnormalities (Jahns, Nielsen and Wolfgang, 2001).…”

Section: Appearancementioning

confidence: 99%

Relating physico‐chemical properties of frozen green peas (Pisum sativum L.) to sensory quality

2013

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BACKGROUND The acceptability of frozen green peas depends on their sensory quality. There is a need to relate physico‐chemical parameters to sensory quality. In this research, six brands of frozen green peas representing product sold for retail and caterer's markets were purchased and subjected to descriptive sensory evaluation and physico‐chemical analyses (including dry matter content, alcohol insoluble solids content, starch content, °Brix, residual peroxidase activity, size sorting, hardness using texture analysis and colour measurements) to assess and explain product quality. RESULTS The sensory quality of frozen green peas, particularly texture properties, were well explained using physico‐chemical methods of analysis notably alcohol insoluble solids, starch content, hardness and °Brix. Generally, retail class peas were of superior sensory quality to caterer's class peas although one caterer's brand was comparable to the retail brands. Retail class peas were sweeter, smaller, greener, more moist and more tender than the caterer's peas. Retail class peas also had higher °Brix, a*, hue and chroma values; lower starch, alcohol insoluble solids, dry matter content and hardness measured. CONCLUSIONS The sensory quality of frozen green peas can be partially predicted by measuring physico‐chemical parameters particularly °Brix and to a lesser extent hardness by texture analyser, alcohol insoluble solids, dry matter and starch content. © 2013 Society of Chemical Industry

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“…Large seeds have a competitive advantage over smaller seeds by having higher germination rates and greater nutrient reserves for the young seedlings, which enable the seedlings to grow larger to tap resources earlier than their small-seeded counterparts (Fenner 1983(Fenner , 1992Marshall 1986;Stock et al 1990;Milberg et al 1996;Venable et al 1998;Easton and Kleindorfer 2008). Consequently, seedlings from large-seeded species should be able to establish under a range of environmental conditions that could not be tolerated by seedlings from small-seeded species.…”

mentioning

confidence: 94%

Interaction Effects of Seed Mass and Temperature on Germination in Australian Species of Frankenia (Frankeniaceae)

Kleindorfer

2008

Folia Geobot

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The seed size and number theories have been proposed to explain the advantages of having many small versus a few large seeds in plants. In particular, seed germination is predicted to be shaped by temperature, and may differ for small and large seeds. In this study, we experimentally test germination at different temperatures in 12 species of arid zone plants in the genus Frankenia L. that differ in seed mass. Seed mass was categorized as "smaller-seeded species" versus "larger-seeded species" for analysis (six species per category). Many of these species co-occur geographically and hence experience similar abiotic conditions (unpredictable rainfall, extremes in temperature, poor soil conditions). The results demonstrated differences in germination as a result of the temperature*seed mass(species) interaction effect. There were significant differences in germination rates across seed mass categories during the first eight days of germination. Germination rates were higher in the larger-seeded species than the smaller-seeded species. Smaller-seeded species had lower germination success but had higher germination rates at lower temperatures, and had a more stringent temperature as a germination cue. These findings are discussed in the context of lifehistory strategies in arid zone plants.

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Environmental Influences on Seed Size and Composition

Cited by 95 publications

References 239 publications

Germinative response of redroot pigweed (Amaranthus retroflexusL.) to environmental conditions: Is there a seasonal pattern?

Germinative response of redroot pigweed (Amaranthus retroflexusL.) to environmental conditions: Is there a seasonal pattern?

Relating physico‐chemical properties of frozen green peas (Pisum sativum L.) to sensory quality

Interaction Effects of Seed Mass and Temperature on Germination in Australian Species of Frankenia (Frankeniaceae)

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