A New Species of Solanum Section Petota (Solanaceae) from Northern Peru

Whalen, Michael D.; Sagástegui, Abundio; Knapp, Sandra

doi:10.2307/2807410

Cited by 8 publications

(10 citation statements)

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“…Horsenettle flowers are self-incompatible and are generally pollinated by large-bodied bees. Horsenettle is weakly andromonoecious, with mostly hermaphroditic (perfect) flowers but a small, variable number of staminate (male) flowers, usually concentrated on the distal ends of the racemes (Solomon 1985;Whalen & Costich 1986). Often, one or more bud primordia on the ends of the racemes do not expand.…”

Section:  mentioning

confidence: 99%

“…Wise personal observation). This pattern also allowed more power in observing changes in floral sex because the distal flowers on racemes tend to be more variable in sex expression than the basal flowers (Solomon 1985; Whalen & Costich 1986;Elle 1998).…”

Section:  mentioning

confidence: 99%

“…The more immediate response to flower loss is likely to be due to direct interactions among the buds within a raceme. If the basal flower buds on a raceme are fertilized and their ovaries begin to swell into fruits, the more distal buds may suffer from competition for resources, or their development may be suppressed by hormones produced by the developing fruits (Whalen & Costich 1986;Solomon 1988;Medrano et al . 2000).…”

Section:         mentioning

confidence: 99%

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Strategies of Solanum carolinense for regulating maternal investment in response to foliar and floral herbivory

Wise

Cummins

2006

Journal of Ecology

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Summary 1The series of steps used to regulate a plant's investment in reproduction in response to environmental stresses is a life-history strategy critical to maximizing fitness. We investigated how the andromonoecious herb Solanum carolinense regulates its maternal investment in response to stress from foliar and floral herbivory. 2 Most of the variation among S. carolinense individuals (ramets) in maternal investment occurred during the initiation of flower-bud primordia, with ramets initiating between 9 and 167 flower buds. 3 In response to simulated floral herbivory, S. carolinense regulated maternal investment by decreasing the abortion rate of flower buds, increasing the ratio of perfect to male flowers and decreasing the rate of fruit abortion. 4 In response to foliar herbivory, the plants increased the rate of fruit abortion and decreased allocation to perennial root growth. 5 Some individuals specialized at regulating during early phenological stages, others specialized at later regulation, and there appeared to be trade-offs between these strategies. 6 Because most plants must cope with multiple stresses that occur at different times in their phenology, such trade-offs suggest the presence of adaptive constraints. In particular, a plant's ability to tolerate damage by one species of herbivore may be constrained by the cost of lower tolerance of the damage caused by the other herbivores that feed on the plant.

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Section:  mentioning

confidence: 99%

Section:  mentioning

confidence: 99%

Section:         mentioning

confidence: 99%

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Strategies of Solanum carolinense for regulating maternal investment in response to foliar and floral herbivory

Wise

Cummins

2006

Journal of Ecology

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“…The leaves of many species are also punctate with whitish deposits of crystal sand (“sand punctate” hereafter). Cells containing deposits like these are found in several groups within Solanum ( Whalen et al 1986 , Bohs 1990 , Knapp 1992 ) and in other groups of angiosperms ( Metcalfe and Chalk 1983 ).…”

Section: Introductionmentioning

confidence: 93%

A new species of Solanum named for Jeanne Baret, an overlooked contributor to the history of botany

Tepe¹,

Ridley²,

Bohs³

2012

PHYTOKEYS

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We describe Solanum baretiae sp. nov., a new species of Solanum section Anarrhichomenum, named in honor of Jeanne Baret, who sailed as the assistant to botanist Philibert Commerson on Louis Antoine de Bougainville’s global circumnavigation (1766–1769). The species is similar to Solanum chimborazense, but differs in having larger flowers, more flowers per inflorescence, and different patterns of pubescence on the filaments (pubescent adaxially and glabrous abaxially) and style (papillose to sparsely pubescent). A description, illustration, photos, and comparisons to similar species are included. Also included is a preliminary conservation assessment, along with a brief account of the important role played by Baret during the expedition. The new species appears to be restricted to the Amotape-Huancabamba zone, an area of southern Ecuador and northern Peru known for its exceptional biodiversity.

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“…There is large variation within species coded as andromonoecious, with a continuum from weakly andromonoecious species with a low proportion of staminate flowers to strongly andromonoecious species with a large number of staminate flowers and a single hermaphroditic flower that sets fruit (Whalen & Costich, 1986;Miller & Diggle, 2007).…”

Section: Sexual Systemmentioning

confidence: 99%

Morphological trait evolution inSolanum(Solanaceae): evolutionary lability of key taxonomic characters

Hilgenhof

Gagnon

Knapp

et al. 2023

Preprint

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Solanum L. is one of the worlds largest and economically most important plant genera, including 1,245 currently accepted species and several major and minor crops (e.g., tomato, potato, brinjal eggplant, scarlet eggplant, Gboma eggplant, lulo, and pepino). Here we provide an overview of the evolution of 25 key morphological traits for the major and minor clades of this giant genus based on stochastic mapping using a well-sampled recently published phylogeny of Solanum. The most evolutionarily labile traits (showing >150 transitions across the genus) relate to plant structure (growth form and sympodial unit structure), herbivore defence (glandular trichomes), pollination (corolla shape and colour), and dispersal (fruit colour). Ten further traits show evolutionary lability with 50-100 transitions across the genus (e.g., specialised underground organs, trichome structure, leaf type, inflorescence position and branching, stamen heteromorphism). Our results reveal a number of highly convergent traits in Solanum, including tubers, rhizomes, simple leaves, yellow corollas, heteromorphic anthers, dioecy, and dry fruits, and some unexpected pathways of trait evolution that could be explored in future studies. We show that informally named clades of Solanum can be morphologically defined by trait combinations providing a tool for identification and enabling predictive phylogenetic placement of unsampled species.

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A New Species of Solanum Section Petota (Solanaceae) from Northern Peru

Cited by 8 publications

References 0 publications

Strategies of Solanum carolinense for regulating maternal investment in response to foliar and floral herbivory

Strategies of Solanum carolinense for regulating maternal investment in response to foliar and floral herbivory

A new species of Solanum named for Jeanne Baret, an overlooked contributor to the history of botany

Morphological trait evolution inSolanum(Solanaceae): evolutionary lability of key taxonomic characters

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