Abstract:
BACKGROUND AND AIMS:Selection may favour a partial or complete loss of self-incompatibility (SI) if it increases the reproductive output of individuals in the presence of low mate availability. The reproductive output of individuals varying in their strength of SI may also be affected by population density via its affect on the spatial structuring and number of S-alleles in populations. Modifiers increasing levels of self-compatibility can be selected when self-compatible individuals receive reproductive compensation by, for example, increasing seed set and/or when they become associated with high fitness genotypes. METHODS:The effect of variation in the strength of SI and scrub density (low versus high) on seed set, seed germination and inbreeding depression in seed germination (delta(germ)) was investigated in the partially self-incompatible species Flourensia cernua by analysing data from self-, cross- and open-pollinated florets. KEY RESULTS:Examination of 100 plants in both high and low scrub densities revealed that 51% of plants were strongly self-incompatible and 49 % varied from being self-incompatible to self-compatible. Seed set after hand cross-pollination was higher than after open-pollination for self-incompatible, partially self-incompatible and self-compatible plants but was uniformly low for strongly self-incompatible plants. Strongly self-incompatible and self-incompatible plants exhibited lower seed set, seed germination and multiplicative female fitness (floral display x seed set x seed germination) in open-pollinated florets compared with partially self-incompatible and self-compatible plants. Scrub density also had an effect on seed set and inbreeding depression: in low-density scrubs seed set was higher after open-pollination and delta(germ) was lower. CONCLUSIONS:These data suggest that (a) plants suffered outcross pollen limitation, (b) female fitness in partially self-incompatible and self-compatible plants is enhanced by increased mate-compatibility and (c) plants in low-density scrubs received higher quality pollen via open-pollination than plants in high-density scrubs.
journal_name
Ann Botjournal_title
Annals of botanyauthors
Ferrer MM,Good-Avila SV,Montaña C,Domínguez CA,Eguiarte LEdoi
10.1093/aob/mcp033subject
Has Abstractpub_date
2009-05-01 00:00:00pages
1077-89issue
7eissn
0305-7364issn
1095-8290pii
mcp033journal_volume
103pub_type
杂志文章相关文献
ANNALS OF BOTANY文献大全abstract:BACKGROUND AND AIMS:Invasion by alien plants may be partially related to disturbance-related increases in nutrient availability and decreases of competition with native species, and to superior competitive ability of the invader. Oxalis pes-caprae is an invasive winter geophyte in the Mediterranean Islands that reprodu...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl289
更新日期:2007-04-01 00:00:00
abstract:BACKGROUND:Studying a process in a new species often relies on focusing our attention to a candidate gene, encoding a protein similar to one with a known function. Not all the choices seem to be prudent. SCOPE:This Viewpoint includes an overview of issues that are encountered during research of candidate genes. Defini...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcs161
更新日期:2013-03-01 00:00:00
abstract::Flowering activity and sex expression of Bischofia javanica Blume were investigated for 3 years. B. javanica is an invasive dioecious tree of subtropical forests on the Bonin Islands in the western Pacific of Japan. The sex ratio showed a significant male bias (1.25-2.33). Smaller trees were significantly male biased,...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcf231
更新日期:2002-11-01 00:00:00
abstract:Background and Aims:Forage quality for herbivores and litter quality for decomposers are two key plant properties affecting ecosystem carbon and nutrient cycling. Although there is a positive relationship between palatability and decomposition, very few studies have focused on larger vertebrate herbivores while conside...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcx175
更新日期:2018-03-05 00:00:00
abstract:BACKGROUND AND AIMS:The phenotypic selection of a diverse insect assemblage was studied on a generalist plant species (Paeonia broteroi) in ten flowering seasons, with tests for whether visitor preferences for plants with larger flowers eventually translated into significant differences among plants in visitation rates...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp140
更新日期:2009-09-01 00:00:00
abstract:BACKGROUND:The trailing edges of species ranges are becoming a subject of increasing interest as the environment changes due to global warming. Trailing edge populations are likely to face extinction because of a decline in numbers and an inability to evolve new adaptations with sufficient speed. Discussions of charact...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcr159
更新日期:2012-02-01 00:00:00
abstract:BACKGROUND AND AIMS:The sedge genus Carex, the most diversified angiosperm genus of the northern temperate zone, is renowned for its holocentric chromosomes and karyotype variability. The genus exhibits high variation in chromosome numbers both among and within species. Despite the possibility that this chromosome evol...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mct119
更新日期:2013-08-01 00:00:00
abstract:BACKGROUND AND AIMS:Plants need different survival strategies in habitats differing in hydrological regimes. This probably has consequences for vegetation development when former floodplain areas that are currently confronted with soil flooding only, will be reconnected to the highly dynamical river bed. Such changes i...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcn183
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND AND SCOPE:Over more than 120 years of scientific study since Schimper's seminal work, the recognized categories of structurally dependent plants have changed several times. Currently, ignoring parasitic mistletoes, it is usual to distinguish four functional groups: (1) true epiphytes; (2) primary hemiepiphyt...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mct085
更新日期:2013-06-01 00:00:00
abstract:BACKGROUND AND AIMS:The balance between stochastic forces and negative frequency-dependent selection largely determines style morph frequencies in heterostylous populations. Investigation of morph frequencies at geographical range limits can provide insights into the forces maintaining the floral polymorphism, and the ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcv173
更新日期:2016-02-01 00:00:00
abstract:BACKGROUND:Low phosphorus (P) availability is a major constraint to soybean growth and production. Developing P-efficient soybean varieties that can efficiently utilize native P and added P in the soils would be a sustainable and economical approach to soybean production. SCOPE:This review summarizes the possible mech...
journal_title:Annals of botany
pub_type: 杂志文章,评审
doi:10.1093/aob/mcq029
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND AND AIMS:Plasticity of floral traits in response to pollination can enable plants to maximize opportunities for pollen import and export under poor pollination conditions, while minimizing costs under favourable ones. Both floral longevity and display are key traits influencing pollination. While pollination...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcw195
更新日期:2017-01-01 00:00:00
abstract::The maize (Zea mays L.) kernel undergoes large changes in water content during its development. Whether such changes regulate the pattern of kernel development or are simply a consequence of it has not yet been established because other factors, such as assimilate supply, can also affect the rate and duration of kerne...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcg090
更新日期:2003-06-01 00:00:00
abstract:BACKGROUND AND AIMS:Dynamic management (DM) of genetic resources aims at maintaining genetic variability between different populations evolving under natural selection in contrasting environments. In 1984, this strategy was applied in a pilot experiment on wheat (Triticum aestivum). Spatio-temporal evolution of earline...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl160
更新日期:2006-10-01 00:00:00
abstract:BACKGROUND:The initiation of DNA replication is a very important and highly regulated step in the cell division cycle. It is of interest to compare different groups of eukaryotic organisms (a) to identify the essential molecular events that occur in all eukaryotes, (b) to start to identify higher-level regulatory mecha...
journal_title:Annals of botany
pub_type: 杂志文章,评审
doi:10.1093/aob/mcr075
更新日期:2011-05-01 00:00:00
abstract:BACKGROUND AND AIMS:Mikania micrantha, a climbing perennial weed of the family Asteraceae, is native to Latin America and is highly invasive in the tropical belt of Asia, Oceania and Australia. This study was framed to investigate the population structure of M. micrantha at a large spatial scale in Asia and to identify...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcaa044
更新日期:2020-06-01 00:00:00
abstract:BACKGROUND AND AIMS:Bristol rock cress is among the few plant species in the British Isles considered to have a Mediterranean-montane element. Spatiotemporal patterns of colonization of the British Isles since the last interglacial and after the Last Glacial Maximum (LGM) from mainland Europe are underexplored and have...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcaa053
更新日期:2020-06-19 00:00:00
abstract:BACKGROUND AND AIMS:Introgression of crop genes into populations of wild relatives has important implications for germplasm conservation as well as for the persistence of novel transgenes in wild populations. Studies of hybrid fitness can be used to evaluate the potential for introgression to occur following episodes o...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mch036
更新日期:2004-03-01 00:00:00
abstract:BACKGROUND AND METHODS:Polyploidy results in genetic turmoil, much of which is associated with new phenotypes that result in speciation. Five independent lines of synthetic allotetraploid N. x obtusiata (N x o) were created from crosses between the diploid N. attenuata (Na) (male) and N. obtusifolia (No) (female) and t...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp058
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND AND AIMS:The optimal period for seedling emergence depends on factors such as habitat preference, life cycle and geographical distribution. This research was performed to clarify the role of temperature in regulating processes leading to seedling emergence of the European continental Scilla bifolia and the A...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcn165
更新日期:2008-11-01 00:00:00
abstract:BACKGROUND AND AIMS:Whole-genome duplication (WGD) events are considered important driving forces of diversification. At least 11 out of 52 Brassicaceae tribes had independent mesopolyploid WGDs followed by diploidization processes. However, the association between mesopolyploidy and subsequent diversification is equiv...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcz123
更新日期:2020-01-08 00:00:00
abstract:Background and Aims:Plants usually compete with neighbouring plants for resources such as light as well as defend themselves against herbivorous insects. This requires investment of limiting resources, resulting in optimal resource distribution patterns and trade-offs between growth- and defence-related traits. A plant...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcx212
更新日期:2018-04-18 00:00:00
abstract::Different gravity environments have been shown to significantly affect leaf-plantlet formation and asexual reproduction in Kalanchoë daigremontiana Ham. and Perr. In the present work, we investigated the effect of gravity at tissue and cell levels. Leaves and leaf-plantlets were cultured for different periods of time ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1006/anbo.2000.1260
更新日期:2000-11-01 00:00:00
abstract:Background and Aims:Bird pollination is rare among species in the genus Utricularia, and has evolved independently in two lineages of this genus. In Western Australia, the Western Spinebill, Acanthorhynchus superciliosus, visits flowers of Utricularia menziesii (section Pleiochasia: subgenus Polypompholyx). This study ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcy163
更新日期:2019-01-01 00:00:00
abstract::Background and Aims Mating systems of plants are diverse and evolutionarily labile. Abiotic environmental factors, such as seasonal drought, may impose selection on physiological traits that could lead to transitions in mating system if physiological traits are genetically correlated with traits that influence mating ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcw134
更新日期:2016-10-01 00:00:00
abstract:BACKGROUND AND AIMS:Plants respond to the spatial and temporal heterogeneity of a resource supply. However, their responses will depend on intraspecific competition for resource acquisition. Although plants are subject to various intensities of intraspecific competition, most studies of resource heterogeneity have been...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcq096
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND AND AIMS:The endemic tree Nothofagus alessandrii (Fagaceae) has been historically restricted to the coastal range of Region VII of central Chile, and its forests have been increasingly destroyed and fragmented since the end of the 19th century. In this study, the patterns of within- and among-population gene...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcm073
更新日期:2007-07-01 00:00:00
abstract:BACKGROUND AND AIMS:Alterations of plasmodesma (PD) connectivity are likely to be very important for plant development. Here, the repetitive division pattern of cambial initials in Populus nigra 'italica' was studied to follow the development of the PD network during maturation. Furthermore, seasonal changes were inves...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp300
更新日期:2010-03-01 00:00:00
abstract:Background:Linear relationships are commonly observed between shoot magnesium ([Mg]shoot) and shoot calcium ([Ca]shoot) concentrations among angiosperm species growing in the same environment. Scope and Conclusions:This article argues that, in plants that do not exhibit 'luxury' accumulation of Mg or Ca, (1) distinct ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcy062
更新日期:2018-08-01 00:00:00
abstract::Culture of cassava somatic embryos on media with an altered macro- and micro-nutrient salt concentration affected embryo development and germination capability. In the tests, quarter-, half-, full- or double-strength Murashige and Skoog (MS) media were compared. The maximum number of somatic embryos differentiated fro...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcf095
更新日期:2002-05-01 00:00:00