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Everything about Triploid block
Formation of nonviable progeny after hybridization of flowering plants
Triploid block is a phenomenon describing the formation of nonviable progeny after hybridization of flowering plants that differ in ploidy. The barrier is established in the endosperm, a nutritive tissue in the seed supporting embryo growth. Triploid block typically happens when autopolyploidy occurs in diploid plants as a form of post-zygotic incompatibility and is hypothesized to be one of the primary forms of reproductive isolation driving speciation of polyploids. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: Triploid blockA 5-minute orientation
- Read the landmark paper: The impact of the triploid block on the origin and evolution of polyploid plantsCited 255 times
- Go sideways: PolyploidyA closely related topic
- Go sideways: PloidyA closely related topic
📖 Definitions
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🗂️ The subject at a glance
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🏆 Landmark papers (most cited)
The impact of the triploid block on the origin and evolution of polyploid plants
Parental genome imbalance in Brassica oleracea causes asymmetric triploid block
Selective egg cell polyspermy bypasses the triploid block
Transgenerational effect of mutants in the RNA-directed DNA methylation pathway on the triploid block in Arabidopsis
A survey of triploid block inconsistency: potential mechanisms and evolutionary implications on polyploid speciation
Decoding hybridization barriers: the molecular and genetic orchestration of the triploid block in Arabidopsis thaliana
Busted: Maternal modifiers of the triploid block involved in seed size control
📚 Books worth reading
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🔗 Related topics
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- Ploidy Ploidy (/ˈplɔɪdi/) is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal…
- Endosperm The endosperm is a tissue produced inside the seeds of most flowering plants following double fertilization. It is triploid (meaning three chromosome sets…
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- Genomic imprinting Genomic imprinting is an epigenetic phenomenon that causes genes to be expressed or not, depending on whether they are inherited from the female or male…
- History of research on Arabidopsis thaliana Arabidopsis thaliana is a first class model organism and the single most important species for fundamental research in plant molecular genetics. A. thaliana…
- Endoreduplication Endoreduplication (also referred to as endoreplication or endocycling) is replication of the nuclear genome in the absence of mitosis, which leads to elevated…
- Apomixis In botany, apomixis is asexual development of seed or embryo without fertilization. Apomictically produced offspring are genetically identical to the parent…