2023
DOI: 10.1002/ajb2.16240
|View full text |Cite
|
Sign up to set email alerts
|

Can heterosis and inbreeding depression explain the maintenance of outcrossing in a cleistogamous perennial?

Tatyana Y. Soto,
Juan Diego Rojas‐Gutierrez,
Christopher G. Oakley

Abstract: PremiseWhat maintains mixed mating is an evolutionary enigma. Cleistogamy, the production of both potentially outcrossing chasmogamous, and obligately selfing cleistogamous flowers on the same individual plant, is an excellent system to study the costs of selfing. Inbreeding depression can prevent the evolution of greater selfing within populations, and heterosis in crosses between populations may further tip the balance in favor of outcrossing. Few empirical estimates of inbreeding depression and heterosis in… Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1

Citation Types

0
2
0

Year Published

2023
2023
2024
2024

Publication Types

Select...
5
1

Relationship

0
6

Authors

Journals

citations
Cited by 7 publications
(2 citation statements)
references
References 92 publications
0
2
0
Order By: Relevance
“…On the other hand, F 1 and F 2 hybrids exhibited outbreeding depression for the number of siliques (Figure 1), with respectively a decrease of 5.5% and 11.3% in F 1 and F 2 hybrids, compared to the mean parental value. This is slightly lower than other values found for different fitness proxies (seeds and fruits production, germination rate…) in other predominantly selfing species (Rhode & Cruzan, 2005; Dolgin et al ., 2007; Volis et al ., 2011; Gimond et al ., 2013; Oakley et al ., 2015; Clo et al ., 2021; Soto et al ., 2023).…”
Section: Resultsmentioning
confidence: 99%
“…On the other hand, F 1 and F 2 hybrids exhibited outbreeding depression for the number of siliques (Figure 1), with respectively a decrease of 5.5% and 11.3% in F 1 and F 2 hybrids, compared to the mean parental value. This is slightly lower than other values found for different fitness proxies (seeds and fruits production, germination rate…) in other predominantly selfing species (Rhode & Cruzan, 2005; Dolgin et al ., 2007; Volis et al ., 2011; Gimond et al ., 2013; Oakley et al ., 2015; Clo et al ., 2021; Soto et al ., 2023).…”
Section: Resultsmentioning
confidence: 99%
“…Selfing increases the probability of fixation of such genetic factors by reducing genetically effective recombination, increasing linkage disequilibrium within populations, and exacerbating epistatic interactions across the genome 2 , 87 90 . Consequently, within-population outbreeding depression has only been reported in populations with considerable levels of selfing 83 , 84 , 86 , 87 , 91 98 . It is therefore likely that island plants of L. lobatum self-fertilize more frequently than mainland plants and suffer from outbreeding depression.…”
Section: Discussionmentioning
confidence: 99%