Reproductive biology and conservation implications of three endangered snapdragon species (Antirrhinum, Plantaginaceae)

Carrió, Elena; Jiménez, Juan Francisco; Sánchez-Gómez, Pedro; Güemes, Jaime

doi:10.1016/j.biocon.2009.03.025

Cited by 16 publications

(18 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Narrowly distributed plant species are expected to have lower fecundity than widespread congeners (studies reviewed in Murray et al, 2002;Lavergne et al, 2004;Young et al, 2007), and this may be associated with greater pollen (Rymer et al, 2005;Carrió et al, 2009) or resource (Lavergne et al, 2005; but see Lavergne et al, 2004) limitation. In accordance with the general results reported in those studies we found that the narrowly distributed I. rubriflora produced fewer seeds per plant than its widespread congener I. purpurea.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, recruitment success in pre-dispersal stages may play a central role in determining species persistence. In this sense, narrowly distributed species may be more ecologically specialized on pollinators and more dependent on pollinator service to produce seeds, which may increase the probability of pollen limitation occurrence in these species (Rymer et al, 2005;Carrió et al, 2009;Astegiano et al, 2010;Fernández et al, 2012). On the other hand, narrowly distributed species may suffer from higher levels of inbreeding depression due to small population sizes (Barret and Kohn, 1991;Lavergne et al, 2004), which may cause higher levels of seed abortion.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Plant recruitment and range size: Transition probabilities from ovule to adult in two Ipomoea

2013

View full text Add to dashboard Cite

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. b s t r a c tIn plants, narrow geographic distributions are generally associated with low colonization and persistence abilities, therefore narrowly distributed plants are expected to have lower plant recruitment success than widespread species. Determining the association between recruitment success and range size requires the comparison of the success in multiple life-history stages among narrowly distributed and widespread congeners sharing the same habitat, an integrated approach rarely considered. We compared transition probabilities from ovule to reproductive adult between the narrowly distributed annual vine Ipomoea rubriflora O'Donnell (Convolvulaceae) and the widespread Ipomoea purpurea (L.) Roth at sites in Chaco woodland where they co-occur. I. rubriflora had marginally lower ovule fertilization success, a lower probability of seed maturation and lower seedling establishment than I. purpurea. The lowest transition probability for both species was seedling emergence. Seedling establishment in I. rubriflora was similar to seedling emergence. Plant recruitment success in I. rubriflora was an order of magnitude lower than that of I. purpurea. Indeed, I. rubriflora had lower total seed production per plant and smaller seed mass. Our results suggest that understanding processes determining regeneration (i.e., seedling emergence and establishment) may be of high importance for understanding narrow distributions in annual plants. The results also suggest that the narrowly distributed species is not only at a "numerical disadvantage" for colonizing new sitesdi.e., lower total seed production per plantdbut it also has a lower per-seed probability of establishing and thus to persist. However, as lower establishment success in this species seemed to be associated with the lower ability to survive adverse conditions of seedlings from smallerseeded species, a narrower regeneration niche might also explain its narrow distribution.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plant recruitment and range size: Transition probabilities from ovule to adult in two Ipomoea

2013

View full text Add to dashboard Cite

show abstract

“…As resource availability allows in favourable periods, fruits of highest quality are matured and the remainder aborted (Lee & Bazzaz, 1982;Teixera, Pareira, & Ranga, 2006;Dao, Diallo, & Kabore-Zoungrana, 2012). Differences in Cyclopia intra-and inter-species pod development and filling can be due to resource accrual and partitioning during seed development among plants within the same growing season (Kéry et al, 2000;Carrió, Jiménez, Sánchez-Gómez, & Güemes, 2009;Valtueña et al, 2010). Therefore, genotypic differences in utilisation of photoassimilates or other nutrients which are reliant on the timing and duration of phenology, physiological constraints, climatic conditions and maternal effects can affect reproductive fitness in the Cyclopia species.…”

Section: Germination (%)mentioning

confidence: 99%

“…Other factors such as the degree of inbreeding and/or self-incompatibility can alter plant reproductive fitness by their variation between lower and higher seeding genotypes within species (Lee & Bazzaz, 1982;Ehrlén, 1992;Elliot & Ladd, 2002;Griffin & Barret, 2002;Carrió et al, 2009;Dao et al, 2012). Genetic variation between and within species may give valuable information on crosses that can help augment fecundity since genetically inferior plants (smaller) produce more non-viable ovules or abort their embryos early compared to larger plants ( Burton & Husband, 2001;Griffin & Barrett, 2002).…”

Section: Fecundity Variation Between Cultivated and Wild Speciesmentioning

confidence: 99%

“…Pollen limitation or pollinators could also have affected Cyclopia fecundity due to a shortage of suitable pollen grains, inadequate pollen from either incompatible pollen or high levels of pollen sterility or fungal-infected pollen received by flowers during fertilisation (Ehrlén, 1992;Elliot & Ladd, 2002;Valtueña et al, 2010); directional movements of pollinators during foraging, due to sensitivity to nectar rewards (Carrió et al, 2009;Thuzar et al, 2010) or plants flowering period coinciding with unfavourable weather conditions (Burgos, Grez, & Bustamante, 2008;Price et al, 2008). Cyclopia species produce an abundance of flowers and are mostly pollinated by monkey beetles (Scarabaeidae) according to M. Joubert and E. Joubert (2012).…”

Section: Fecundity Variation Between Cultivated and Wild Speciesmentioning

confidence: 99%

See 1 more Smart Citation

Natural Fecundity and Germination Characteristics of Selected Cyclopia (Honeybush) Species: Preliminary Findings

Motsa¹,

Bester²,

Slabbert³

et al. 2017

JAS

View full text Add to dashboard Cite

Cyclopia Vent. (honeybush) is a South African herbal tea legume endemic to the Cape Floristic Region of South Africa. At present, knowledge of reproductive fitness (fecundity) between cultivated and undomesticated Cyclopia species is scant. Cultivated genotypes of C. genistoides (L.) R.Br. and C. subternata Vogel were evaluated for their potential to produce fruit and seeds in different localities spanning two years. Fecundity and germination were also determined from natural environment of each species and compared to cultivated species in order to determine the variation between species and between cultivated and non-cultivated species. Seeds collected were weighed to determined seed mass and evaluated for germination rate and cumulative germination per individual site. A fifth of flowers developing into a pod, averaged more initiated and filled seeds per pod in C. subternata than C. genistoides. Germination percentage was directly proportional to rate of germination in both species. Cyclopia subternata had a higher fecundity and germination than C. genistoides in both cultivated and natural environments. The study results assist in the further improvement of the genus through breeding new cultivars for seed with desired qualities for improving commercial characteristics; planning of seed orchards for seed production, selecting of best sites, assisting in choosing progenies for seed production and rehabilitation of degraded sites for the sustainable production of honeybush.

show abstract

Evaluating species nonmonophyly as a trait affecting genetic diversity: a case study of three endangered species of Antirrhinum L. (Scrophulariaceae)

et al. 2010

View full text Add to dashboard Cite

Reproductive biology and conservation implications of three endangered snapdragon species (Antirrhinum, Plantaginaceae)

Cited by 16 publications

References 64 publications

Plant recruitment and range size: Transition probabilities from ovule to adult in two Ipomoea

Plant recruitment and range size: Transition probabilities from ovule to adult in two Ipomoea

Natural Fecundity and Germination Characteristics of Selected Cyclopia (Honeybush) Species: Preliminary Findings

Evaluating species nonmonophyly as a trait affecting genetic diversity: a case study of three endangered species of Antirrhinum L. (Scrophulariaceae)

Contact Info

Product

Resources

About