Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1093/aob/mcp033 |
Effect of variation in self-incompatibility on pollen limitation and inbreeding depression in Flourensia cernua (Asteraceae) scrubs of contrasting density | |
Ferrer, Miriam M.1; Good-Avila, Sara V.2; Montana, Carlos3; Dominguez, Cesar A.4; Eguiarte, Luis E.4 | |
通讯作者 | Ferrer, Miriam M. |
来源期刊 | ANNALS OF BOTANY
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ISSN | 0305-7364 |
出版年 | 2009 |
卷号 | 103期号:7页码:1077-1089 |
英文摘要 | 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. 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. 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. 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. |
英文关键词 | Flourensia cernua population density seed set seed germination female fitness partial self-incompatibility Mapimi Biosphere Reserve |
类型 | Article |
语种 | 英语 |
国家 | Mexico ; Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000265267700008 |
WOS关键词 | SQUALIDUS L. ASTERACEAE ; CAMPANULA-RAPUNCULOIDES CAMPANULACEAE ; BREEDING SYSTEM ; MATING-SYSTEM ; POPULATION-GENETICS ; FLOWERING PLANTS ; FRUIT-SET ; EVOLUTIONARY CONSEQUENCES ; REPRODUCTIVE COMPENSATION ; CHIHUAHUAN DESERT |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
来源机构 | Universidad Nacional Autónoma de México |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/159717 |
作者单位 | 1.Univ Autonoma Yucatan, Dept Ecol, Merida 97000, Yucatan, Mexico; 2.Univ Winnipeg, Dept Biol, Winnipeg, MB R3B 2E9, Canada; 3.Inst Ecol AC, Xalapa 91070, Veracruz, Mexico; 4.Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Evolut, Mexico City 04510, DF, Mexico |
推荐引用方式 GB/T 7714 | Ferrer, Miriam M.,Good-Avila, Sara V.,Montana, Carlos,et al. Effect of variation in self-incompatibility on pollen limitation and inbreeding depression in Flourensia cernua (Asteraceae) scrubs of contrasting density[J]. Universidad Nacional Autónoma de México,2009,103(7):1077-1089. |
APA | Ferrer, Miriam M.,Good-Avila, Sara V.,Montana, Carlos,Dominguez, Cesar A.,&Eguiarte, Luis E..(2009).Effect of variation in self-incompatibility on pollen limitation and inbreeding depression in Flourensia cernua (Asteraceae) scrubs of contrasting density.ANNALS OF BOTANY,103(7),1077-1089. |
MLA | Ferrer, Miriam M.,et al."Effect of variation in self-incompatibility on pollen limitation and inbreeding depression in Flourensia cernua (Asteraceae) scrubs of contrasting density".ANNALS OF BOTANY 103.7(2009):1077-1089. |
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