Pollen vectors in sugar maple (<i>Acer saccharum</i>)

Gabriel, William J.; Garrett, Peter W.

doi:10.1139/b84-385

Cited by 19 publications

(16 citation statements)

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“…These results suggest that wind pollination is predominant and sufficient for pollination (Gabriel & Garrett 1984). However, a spatial clustering of related individuals can also result from spatially restricted seed dispersal.…”

Section: Discussionmentioning

confidence: 81%

“…The flowering period of sugar maple extends from late March to mid of May depending upon the geographical location and seasonal variation. Sugar maple flowers can be either perfect or staminate (pistil abortive) and are generally wind pollinated, but also pollination by bees was reported (Gabriel & Garrett 1984). The fruit is a double samara and is dispersed by wind with the potential of long distance dispersal (Guries & Nordheim 1984, Godman et al 1990).…”

Section: Species Descriptionmentioning

confidence: 99%

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Nuclear microsatellite markers for population genetic studies in sugar maple (Acer saccharum Marsh.)

et al. 2015

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Abstract. A set of seven new nuclear microsatellite markers (nSSRs) was developed for sugar maple (Acer saccharum Marsh.) using paired-end Illumina sequencing. Out of 96 primers screened in a panel of six unrelated individuals, seven markers amplified polymorphic products. The utility of these markers, in addition to six already published microsatellites, for genetic variation and gene flow studies was assessed. Out of the seven newly developed markers, three amplified multiple fragments and were interpreted as dominant (absence/presence) markers, while four markers amplified a maximum of two amplification products per sample. The six published microsatellites and three of the four newly developed markers showed regular segregation in an open-pollinated single tree progeny. Observed heterozygosity (H o ) and expected heterozygosity (H e ) in 48 individuals from one population ranged from 0.436 to 0.917 and from 0.726 to 0.894, respectively. Dominant markers revealed 64 variable positions and moderate genetic variation within the population (H e = 0.102, Shannon's I = 0.193). Paternity analyses in the program CERVUS at co-dominant markers showed effective dispersal of pollen in the sugar maple population both at 95% and 80% confidence levels. Dependent on the confidence level, the mean pollen dispersal distance within the population ranged from 33.25 m to 38.75 m and gene flow from outside the stand from 78% to 82%. The absence of fine-scale Spatial Genetic Structure (SGS) suggested effective dispersal of both seeds and pollen.

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Section: Discussionmentioning

confidence: 81%

Section: Species Descriptionmentioning

confidence: 99%

Nuclear microsatellite markers for population genetic studies in sugar maple (Acer saccharum Marsh.)

et al. 2015

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“…Acer saccharum is monoecious and self-compatible, although selfing is restricted by incomplete dichogamy (Gabriel 1968). Trees are both wind and insect pollinated, although wind pollination is predominant (Gabriel and Garrett 1984). Seed crops are typically light in 40-60-year-old trees, moderate in 70-100-year-old trees, and can be very large in older trees (Godman 1965).…”

Section: Methodsmentioning

confidence: 99%

The effect of deforestation on the genetic diversity and structure in Acer saccharum (Marsh): Evidence for the loss and restructuring of genetic variation in a natural system

2005

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The level and distribution of genetic diversity can be influenced by species life history traits and demographic factors, including perturbations that might produce population bottlenecks. Deforestation and forest fragmentation are common sources of population disturbance in contemporary populations of forest ecosystems. Although the genetic effects of forest fragmentation and deforestation have been examined by assessing levels of genetic variation in forest fragments that remain after logging, few considerations have been made of the populations that re-colonize once-cleared areas. Here we examine the effects of humanmediated population bottlenecks on the level and distribution of genetic diversity in natural populations of the long-lived forest tree species, Acer saccharum (sugar maple). We compared genetic variation and structure for populations of sugar maple found within old-growth forested area and in area that has recolonized since logging. In this study the percent polymorphic loci and allelic richness estimates were reduced in the logged populations compared to old-growth populations. Jackknifed estimates of population genetic differentiation showed significantly higher differentiation among logged populations, with this result being consistently seen when individuals within populations were grouped according to diameter at breast height. The result of decreased genetic variation and higher levels of genetic structure among logged populations suggests that even one extensive bout of logging can alter the level and distribution of genetic variation in this forest tree species.

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“…Flowers are in small fascicles and functionally either male or female (Godman et al . 1990); pollination is accomplished mainly by insects, but wind pollination also occurs (Gabriel & Garrett 1984). Seeds mature during the summer and fruits are disseminated by the wind from early autumn through early winter.…”

Section: The Study Speciesmentioning

confidence: 99%

Mast seeding in Abies balsamea, Acer saccharum and Betula alleghaniensis in an old growth, cold temperate forest of north‐eastern North America

Houle

1999

Journal of Ecology

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Summary 0 Several hypotheses have been put forward to explain the phenomenon of masting or mast seeding\ i[e[ the supra!annual\ periodic production of a large number of seeds in long!lived plants[ Some of these hypotheses deal with the proximate causes of masting "e[g[ the climate hypothesis# but others are concerned mostly with ultimate\ evolutionary explanations "e[g[ the pollination e.ciency hypothesis#[ 1 The seed production of three tree species\ Abies balsamea\ Acer saccharum and Betula alle`haniensis\ was followed over a 6!year period in an old!growth\ cold tem! perate forest of north!eastern North America[ The main objectives were to determine the extent of interannual variations in seed production\ to investigate the relationship between viable and potential seed crop and crop e.ciency\ and to explore the e}ects of climate on seed production[ 2 Potential and viable seed production varied signi_cantly among years for all three species[ However\ the timing of dispersal remained the same regardless of the level of seed production[ 3 Seed rain was spatially less heterogeneous in years of high seed production\ sug! gesting that most trees were reproducing in such years[ 4 Over the 6!year period\ there was a signi_cant concordance among species in their viable seed crop and crop e.ciency\ but not in their potential seed crop[ Crop e.ciency was positively correlated to potential seed crop for Abies and Betula\ but not for Acer[ 5 High seed production was related to warm\ dry conditions in the spring of the previous year "i[e[ at reproductive bud initiation# but to a moist summer in the year of seed maturation[ 6 Masting in these three species thus appears to be controlled by several factors\ including climate and pollination e.ciency[ Keywords] Abies balsamea\ Acer saccharum\ Betula alle`haniensis\ climate\ crop e.ciency\ mast~owering\ mast seeding\ potential seed crop\ viable seed crop Journal of Ecology "0888# 76\ 302Ð311

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Pollen vectors in sugar maple (Acer saccharum)

Cited by 19 publications

References 0 publications

Nuclear microsatellite markers for population genetic studies in sugar maple (Acer saccharum Marsh.)

Nuclear microsatellite markers for population genetic studies in sugar maple (Acer saccharum Marsh.)

The effect of deforestation on the genetic diversity and structure in Acer saccharum (Marsh): Evidence for the loss and restructuring of genetic variation in a natural system

Mast seeding in Abies balsamea, Acer saccharum and Betula alleghaniensis in an old growth, cold temperate forest of north‐eastern North America

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