ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2008
Fine mapping and candidate gene analysis of hwh1 and hwh2, a set of complementary genes controlling hybrid breakdown in rice.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 27 citations in OpenAlex.
- Genetic Cause of Hybrid Lethality Observed in Reciprocal Interspecific Crosses betweenInternational journal of molecular sciences · 2024Article
- A recessive LRR-RLK gene causes hybrid breakdown in cotton.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- A Novel Combination of Genes Causing Temperature-Sensitive Hybrid Weakness in Rice.Frontiers in plant science · 2022Article
- Identification of QTL Combinations that Cause Spikelet Sterility in Rice Derived from Interspecific Crosses.Rice (New York, N.Y.) · 2021Article
- TheBreeding science · 2021Article
- Mapping and Validation of QTLs for the Amino Acid and Total Protein Content in Brown Rice.Frontiers in genetics · 2020Article
- Identification of QTLs for seed germination capability after various storage periods using two RIL populations in rice.Molecules and cells · 2011Article
- A dynamic and complex network regulates the heterosis of yield-correlated traits in rapeseed (Brassica napus L.).PloS one · 2011Article
- Speciation genes in plants.Annals of botany · 2010Review
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Authors and funding
10 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Hybrid breakdown (HB), a phenomenon of reduced viability or fertility accompanied with retarded growth in hybrid progenies, often arises in the offspring of intersubspecific hybrids between indica and japonica in rice. We detected HB plants in F8 recombinant inbred lines derived from the cross between an indica variety, Milyang 23, and a japonica variety, Tong 88-7. HB plants showed retarded growth, with fewer tillers and spikelets. Genetic analysis revealed that HB was controlled by the complementary action of two recessive genes, hwh1 and hwh2, originating from each of both parents, which were fine-mapped on the short arm of chromosome 2 and on the near centromere region of the long arm of chromosome 11, respectively. A comparison of the sequences of candidate genes among both parents and HB plants revealed that hwh1 encoded a putative glucose-methanol-choline oxidoreductase with one amino acid change compared to Hwh1 and that hwh2 probably encoded a putative hexose transporter with a six amino acid insertion compared to Hwh2. Investigation of the distribution of these alleles among 54 japonica and indica cultivars using candidate gene-based markers suggested that the two loci might be involved in developing reproductive barriers between two subspecies.
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