ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2016
Stacking S5-n and f5-n to overcome sterility in indica-japonica hybrid rice.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Molecular-Marker-Based Design for Breeding Indica-Japonica Hybrid Rice with Bacterial Blight Resistance.Genes · 2025Article
- Molecular and physiological basis of heterosis in hybrid rice performance.Molecular breeding : new strategies in plant improvement · 2025Review
- Characterization and fine-mapping of a new Asian rice selfish genetic locus S58 in Asian-African rice hybrids.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- Transcriptome Analysis of the Responses of Rice Leaves to Chilling and Subsequent Recovery.International journal of molecular sciences · 2022Article
- Article
- Understanding the Nature of Hybrid Sterility and Divergence of Asian Cultivated Rice.Frontiers in plant science · 2022Review
- Research and Development Strategies for Hybrid japonica Rice.Rice (New York, N.Y.) · 2020Review
- Genomic Breeding of Green Super Rice Varieties and Their Deployment in Asia and Africa.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2020Review
- Improving rice blast resistance of Feng39S through molecular marker-assisted backcrossing.Rice (New York, N.Y.) · 2019Article
- Accelerated molecular breeding of a novel P/TGMS line with broad-spectrum resistance to rice blast and bacterial blight in two-line hybrid rice.Rice (New York, N.Y.) · 2018Article
- Marker-Assisted Improvement of the Elite Maintainer Line of Rice, IR 58025B for Wide Compatibility (Frontiers in plant science · 2018Article
- Article
- Molecular Breeding of Rice Restorer Lines and Hybrids for Brown Planthopper (BPH) Resistance Using the Bph14 and Bph15 Genes.Rice (New York, N.Y.) · 2016Article
- Development and evaluation of near-isogenic lines for brown planthopper resistance in rice cv. 9311.Scientific reports · 2016Article
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8 authors.
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Abstract
key messagePyramiding of S5 - n and f5 - n cumulatively improved seed-setting rate of indica-japonica hybrids, which provided an effective approach for utilization of inter-subspecific heterosis in rice breeding. Breeding for indica-japonica hybrid rice is an attractive approach to increase rice yield. However, hybrid sterility is a major obstacle in utilization of inter-subspecific heterosis. Wide-compatibility alleles can break the fertility barrier between indica and japonica subspecies, which have the potential to overcome inter-subspecific hybrid sterility. Here, we improved the compatibility of an elite indica restorer line 9311 to a broad spectrum of japonica varieties, by introducing two wide-compatibility alleles, S5-n and f5-n, regulating embryo-sac and pollen fertility, respectively. Through integrated backcross breeding, two near isogenic lines harboring either S5-n or f5-n and a pyramiding line carrying S5-n plus f5-n were obtained, with the recurrent parent genome recovery of 99.95, 99.49, and 99.44 %, respectively. The three lines showed normal fertility when crossed to typical indica testers. When testcrossed to five typical japonica varieties, these lines allowed significant increase of compatibility with constant agronomic performance. The introgressed S5-n could significantly improve 14.7-32.9 % embryo-sac fertility in indica-japonica hybrids. In addition, with the presence of f5-n fragment, S5-n would increase the spikelet fertility from 9.5 to 21.8 %. The introgressed f5-n fragment greatly improved anther dehiscence, embryo-sac and pollen fertility in indica-japonica hybrids, thus leading to improvement of spikelet fertility from 20.4 to 30.9 %. Moreover, the pyramiding line showed 33.6-46.7 % increase of spikelet fertility, suggesting cumulative effect of S5-n and f5-n fragment in seed-set improvement of inter-subspecific hybrids. Our results provided an effective approach for exploiting heterosis between indica and japonica subspecies, which had a profound implication in rice breeding.
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