Effect of mother plant age on germination and size of seeds and seedlings in the perennial sedge Carex secalina (Cyperaceae)

Lembicz, Marlena; Olejniczak, Paweł; Zukowski, W; Bogdanowicz, Agnieszka

doi:10.1016/j.flora.2010.09.006

Cited by 18 publications

(18 citation statements)

References 21 publications

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“…any yearly differences in mean monthly temperatures or total monthly precipitation. This confirms that the differences in plant characteristics between years can be attributed to plant age [26]. Thus, the changes observed in individuals that grew in uniform conditions were not due to weather conditions.…”

Section: Discussionsupporting

confidence: 79%

“…Although this tendency differed between individual populations, in each population both variables reached the lowest value at age four ( Figure 1A). Our observations imply that the number of generative tillers corresponds to the change in total aboveground dry biomass, which consistently decreased with an individual's age in each population [26]. In addition, our data indicate that across age groups, the number of generative tillers correlates positively with dry biomass.…”

Section: Discussionsupporting

confidence: 57%

“…We expected that the expenditure on reproductive structures would vary with the size and age of individuals, i.e., that larger individuals would produce longer and more numerous spikes. In an earlier study [26], we found that the individuals of Carex secalina grown in a garden reach their maximum size at the first year of reproduction (2 nd year of life) and gradually become smaller in subsequent years. In the present study, we assumed that a plant will suffer a higher reduction in vegetative dry biomass in a given year as a result of reproductive costs incurred in the previous year.…”

Section: Introductionmentioning

confidence: 74%

“…Brought to you by | MIT Libraries Authenticated Download Date | 5/11/18 4:06 PM changing with the incurred reproductive costs, does not affect the size of seeds, so smaller individuals do not produce smaller seeds [26]. Presumably, smaller individuals produce a lower number of seeds of similar size to those of larger individuals.…”

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confidence: 99%

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Costs of reproduction in life history of a perennial plant Carex secalina

et al. 2011

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We tested a hypothesis based on life history theory that examines reproductive costs incurred by individuals in consecutive years of their life. A multi-year dataset of resource allocation to vegetative and reproductive structures was analysed in Carex secalina — a perennial, monoecious sedge, reproducing only sexually. In a four-year garden experiment, we assessed above-ground biomass at the end of each season and reproductive allocation expressed as the total length of male and female spikes. The study was aimed at determining how size and age of a plant relates to its reproduction, and how the rate of reproduction affects the year-toyear biomass change in Carex secalina. We observed that after each reproductive episode, individuals had significantly smaller sizes and produced a lower number of generative tillers. The total production of reproductive structures decreased significantly with age in all populations. Moreover, the decrease in plant biomass was greater when more reproductive structures were produced in a previous year, which indicates that the plants incur costs of reproduction in terms of above-ground biomass production.

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Section: Discussionsupporting

confidence: 79%

Section: Discussionsupporting

confidence: 57%

Section: Introductionmentioning

confidence: 74%

mentioning

confidence: 99%

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Costs of reproduction in life history of a perennial plant Carex secalina

et al. 2011

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“…Moreover, our studies on sedge seed germination have shown a high importance of life history traits (Øukowski et al 2005;Lembicz et al 2010). Our experiment under controlled conditions of a garden allowed to observe the effect of mother plant age on the development of seeds and seedlings of Carex secalina.…”

Section: Factors Controlling Germinationmentioning

confidence: 95%

Seed germination in sedges: a short review

Zukowski

Bogdanowicz²,

Lembicz³

2010

Biodiversity: Research and Conservation

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Five patterns of seed germination in the sedges of the genus Carex are presented, based on the literature data and the results of the authorsí own research. They include the pattern of C. acutiformis, C. arenaria, C. remota, C. flava and C. communis. These patterns were constructed on the basis of seed specific requirements for development, such as stratification, temperature, dormancy and time of germination. Majority of sedges follow the pattern of C. acutiformis or C. remota. In both cases, stratification and either high or low temperature are essential for seed germination. Seeds that start to germinate early (C. remota pattern) are characterized by the absence of the distinct peaks of germination, as opposed to the C. acutiformis pattern with the germination peak in March. Our long-term investigations, conducted on the group of individuals in controlled conditions, revealed significant differences in seed size and the ability of seeds to germinate depending on the age of mother plants. We postulate that mother plant age is a new factor that should be considered in the construction of seed germination patterns.

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The role of maternal age, growth, and environment in shaping offspring performance in an aerial conifer seed bank

Callejas-Díaz

Chambel

San‐Martín‐Lorén

et al. 2022

American J of Botany

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Premise Maternal effects have been demonstrated to affect offspring performance in many organisms, and in plants, seeds are important mediators of these effects. Some woody plant species maintain long‐lasting canopy seed banks as an adaptation to wildfires. Importantly, these seeds stored in serotinous cones are produced by the mother plant under varying ontogenetic and physiological conditions. Methods We sampled the canopy seed bank of a highly serotinous population of Pinus pinaster to test whether maternal age and growth and the environmental conditions during each crop year affected seed mass and ultimately germination and early survival. After determining retrospectively the year of each seed cohort, we followed germination and early survival in a semi‐natural common garden. Results Seed mass was related to maternal age and growth at the time of seed production; i.e., slow‐growing, older mothers had smaller seeds, and fast‐growing, young mothers had larger seeds, which could be interpreted either as a proxy of senescence or as a maternal strategy. Seed mass had a positive effect on germination success, but aside from differences in seed mass, maternal age had a negative effect and diameter had a positive effect on germination timing and subsequent survival. Conclusions The results highlight the importance of maternal conditions combined with seed mass in shaping seedling establishment. Our findings open new insights in the offspring performance deriving from long‐term canopy seed banks, which may have high relevance for plant adaptation.

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Effect of mother plant age on germination and size of seeds and seedlings in the perennial sedge Carex secalina (Cyperaceae)

Cited by 18 publications

References 21 publications

Costs of reproduction in life history of a perennial plant Carex secalina

Costs of reproduction in life history of a perennial plant Carex secalina

Seed germination in sedges: a short review

The role of maternal age, growth, and environment in shaping offspring performance in an aerial conifer seed bank

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