Pollen presentation, pollen-ovule ratios, and other reproductive traits in Mediterranean Legumes (Fam. Fabaceae - Subfam. Faboideae)

Galloni, Marta; Podda, Licia; Vivarelli, Daniele; Cristofolini, Giovanni

doi:10.1007/s00606-007-0526-1

Cited by 65 publications

(91 citation statements)

References 53 publications

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“…Loss of selfincompatible individuals from a population is often associated with changes to the mating system, particularly selection favoring selfing, and the loss of SI may be accompanied by changes in the floral traits that promote or are associated with increased rates of selfing. For example, an increase in the rate of selfing at species and population level has been associated with lower pollen: ovule ratios (Cruden, 1977;Galloni et al, 2007;Jürgens et al, 2002), reduced investment in floral attractants (Lyons and Antonovics, 1991;Tang and Huang, 2007;Wyatt, 1984), reduced heterogamy (Takebayashi et al, 2006), and close anther-stigma separation (Holtsford and Ellstrand, 1992). In four Hypochaeris species, self-compatible species have smaller flower heads than self-incompatible species (Ortiz et al, 2006), and a high frequency of selfcompatible individuals in Leptosiphon jepsonii populations is associated with shorter corolla tubes and smaller corolla lobes (Goodwillie and Ness, 2005).…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic Relationship between Degree of Self-compatibility and Floral Traits in Lilium longiflorum Thunb. (Liliaceae)

Sakazono

Hiramatsu

Huang

et al. 2012

J. Japan. Soc. Hort. Sci.

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Lilium longiflorum is endemic to the islands of the Ryukyu Archipelago in Japan and to the eastern seacoasts and satellite islands of the mainland of Taiwan. The species is an important ornamental plant, and is cultivated throughout the world. Lilium longiflorum has long been regarded as a self-incompatible species but the existence of selfing in some natural populations was suggested by isozyme analysis in a previous study. To confirm the occurrence of self-compatible individuals and to clarify the evolutionary shift of floral traits associated with degree of self-compatibility in L. longiflorum by comparative analysis, we used 17 populations of L. longiflorum, and two populations of L. formosanum, the genetically closest species of L. longiflorum, covering the entire species distribution. Artificial self-pollination revealed that not all L. longiflorum individuals are self-incompatible and there is substantial quantitative variation of self-incompatibility among L. longiflorum individuals and populations. Self-compatible dominant populations allopatrically and independently evolved at the periphery of the species distribution area, the northern Ryukyu Archipelago and Taiwan. Increasing degree of selfcompatibility in L. longiflorum correlated with reduced corolla length, corolla width, corolla volume, and anther length for the Ryukyu Archipelago, in contrast to only reduced corolla width and volume for Taiwan. Approach between anther and stigma was not observed in any populations. Our data indicate that in the Ryukyu Archipelago increasing degree of self-compatibility evolved floral traits related to mating system evolution, to selfing, that does not depend on adjacency between anther and stigma position, but not in Taiwan.

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Section: Introductionmentioning

confidence: 99%

Phylogenetic Relationship between Degree of Self-compatibility and Floral Traits in Lilium longiflorum Thunb. (Liliaceae)

Sakazono

Hiramatsu

Huang

et al. 2012

J. Japan. Soc. Hort. Sci.

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“…Various authors have used the P/O ratio directly as predictor of breeding systems (Lindsey, 1982;Ortega Olivencia & al., 1997;López & al., 1999); others have analyzed if the P/O ratio coincides or not with the predictions of that foundational work (Preston, 1986;Plitmann and Levin, 1990;Spira, 1980;Wyatt, 1984;Roitman and Medán, 1994;Affre and Thompson, 1998;Weller & al., 1998;Galloni & al., 2007;Hokche and Ramírez, 2008). Even Cruden and McClain (1996) tested the P/O ratio in additional species.…”

Section: Introductionmentioning

confidence: 99%

“…2003; Galloni & al., 2007) values than expected. Rather than breeding system, in several taxa P/O ratio reflects better pollination mechanism (Galloni & al., 2007) or pollination efficiency (Choteau & al., 2006).…”

Section: Introductionmentioning

confidence: 99%

Pollen: ovule ratio and its relationship with other reproductive traits in some <em>Passiflora</em> species (Passifloraceae)

García¹,

Miguez²,

Gottsberger³

2014

Anal. Jard. Bot. Madr.

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Amela García, M.T., Miguez, M.B. & Gottsberger, G. 2014. Pollen: ovule ratio and its relationship with other reproductive traits in some Passiflora species (Passifloraceae). Anales Jard. Bot. Madrid 71(2): e009.The pollen/ovule (P/O) ratio has been used as predictor of the reproductive system of angiosperms (lowest P/O values correspond to obligate autogamous species while the highest correlate with obligate xenogamous species) but it does not keep for all the taxa. The relation of P/O index with pollen and stigma size, flower diameter, pollen vitality, stigmatic area/pollen-bearing area of the pollinators ratio (SA/PBA), taxonomy and breeding system was analyzed in four Passiflora species with different degree of compatibility, pollination system and taxonomic placement. P/O of the self-compatible species (with shorter anthesis, scarce pollinator visits or minor longevity) was lower than P/O of the selfincompatible ones. The P/O values of the outcrossers could be related with the highly efficient pollination performed by the frequently visiting Xylocopa species; these bees transport Passiflora pollen in a usually monospecific mass on the thorax, resembling grouped pollen dispersal. All the taxa exhibited pollen with unimodal size and high vitality, except for P. misera, in which pollen size was bimodal, with similar quantities of grains in both classes, the large being more vital than the small ones. Correlations of P/O were positive with flower size, negative with stigma area/pollen-bearing area of the pollinator, null with stigma area and not significant with pollen size. The P/O ratio did not reflect taxonomic affinities; this index and the breeding system were more related with pollinator type, anthesis, flower size and SA/PBA than with pollen grain or stigma size.Keywords: pollen size, pollen vitality, breeding systems, flower size, stigma area, pollen-bearing area, pollinators, anthesis, plant longevity, sexual system. ResumenAmela García, M.T., Miguez, M.B. & Gottsberger, G. 2014. El índice polen/óvulos y su relación con otros rasgos reproductivos en varias especies de Passiflora (Passifloraceae). Anales Jard. Bot. Madrid 71(2): e009.La utilidad del índice polen/óvulos (P/O) para predecir el sistema reproductivo de las Angiospermas (los valores más bajos corresponden a especies autógamas obligadas mientras que los valores más altos a especies xenóga-mas obligadas) no siempre ocurre. Analizamos la relación del P/O respecto del tamaño del polen y estigma, diámetro floral, viabilidad polínica, proporción área estigmática/área de acarreo del polen por los polinizadores, la taxonomía y el sistema reproductivo en cuatro especies de Passiflora con grado de compatibilidad, polinizadores y posición taxonómica distintos. El P/O de las especies auto-compatibles (con antesis más corta, polinizadores infrecuentes o menos longevidad) fue menor que el de las auto-incompatibles. Esto estaría relacionado con la polinización altamente eficiente que realizan asiduamente Xylocopa spp., transportando polen de Passifl...

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“…Allogamous species with functioning self-incompatibility systems may allow for paired pollination of plants without emasculation, but autogamous species with large, easy to emasculate flowers will be preferred. Furthermore, a large variation in mean ovule number (e.g., Onobrychis viciifolia = 1.0 ± 0.0, Lotus corniculatus = 56.3 ± 5.5) and mean pollen grain number (e.g., Anthyllis vulneria = 3654 ± 948, Lotus corniculatus = 198,500 ± 13,012) per flower exists between perennial legume species [130]. Candidate species that produce sufficient amounts of pollen and that have many ovules per flower are preferred so that each hand pollination or controlled cross produces abundant seeds.…”

Section: Reproductive Biologymentioning

confidence: 99%

Perennial Grain Legume Domestication Phase I: Criteria for Candidate Species Selection

et al. 2018

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Annual cereal and legume grain production is dependent on inorganic nitrogen (N) and other fertilizers inputs to resupply nutrients lost as harvested grain, via soil erosion/runoff, and by other natural or anthropogenic causes. Temperate-adapted perennial grain legumes, though currently non-existent, might be uniquely situated as crop plants able to provide relief from reliance on synthetic nitrogen while supplying stable yields of highly nutritious seeds in low-input agricultural ecosystems. As such, perennial grain legume breeding and domestication programs are being initiated at The Land Institute (Salina, KS, USA) and elsewhere. This review aims to facilitate the development of those programs by providing criteria for evaluating potential species and in choosing candidates most likely to be domesticated and adopted as herbaceous, perennial, temperate-adapted grain legumes. We outline specific morphological and ecophysiological traits that may influence each candidate's agronomic potential, the quality of its seeds and the ecosystem services it can provide. Finally, we suggest that perennial grain legume breeders and domesticators should consider how a candidate's reproductive biology, genome structure and availability of genetic resources will determine its ease of breeding and its domestication timeline.

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Pollen presentation, pollen-ovule ratios, and other reproductive traits in Mediterranean Legumes (Fam. Fabaceae - Subfam. Faboideae)

Cited by 65 publications

References 53 publications

Phylogenetic Relationship between Degree of Self-compatibility and Floral Traits in Lilium longiflorum Thunb. (Liliaceae)

Phylogenetic Relationship between Degree of Self-compatibility and Floral Traits in Lilium longiflorum Thunb. (Liliaceae)

Pollen: ovule ratio and its relationship with other reproductive traits in some <em>Passiflora</em> species (Passifloraceae)

Perennial Grain Legume Domestication Phase I: Criteria for Candidate Species Selection

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