The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.
Genetic Dissection of an Elite Rice Hybrid Revealed That Heterozygotes Are Not Always Advantageous for Performance
Abstract
We introduced an experimental design that produced an “immortalized F2” population allowing for complete dissection of genetic components underlying quantitative traits. Data for yield and three component traits of the immortalized F2 were collected from replicated field trials over 2 years. Using 231 marker loci, we resolved the genetic effects into individual components and assessed relative performance of all the genotypes at both single- and two-locus levels. Single-locus analysis detected 40 QTL for the four traits. Dominance effects for about one-half of the QTL were negative, resulting in little “net” positive dominance effect. Correlation between genotype heterozygosity and trait performance was low. Large numbers of digenic interactions, including AA, AD, and DD, were detected for all the traits, with AA as the most prevalent interaction. Complementary two-locus homozygotes frequently performed the best among the nine genotypes of many two-locus combinations. While cumulative small advantages over two-locus combinations may partly explain the genetic basis of heterosis of the hybrid as double heterozygotes frequently demonstrated marginal advantages, double heterozygotes were never the best genotypes in any of the two-locus combinations. It was concluded that heterozygotes were not necessarily advantageous for trait performance even among genotypes derived from such a highly heterotic hybrid.
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Natural variation in Ghd7 is an important regulator of heading date and yield potential in rice
Xue, W., Xing, Y., Weng, X., Zhao, Y., Tang, W., Wang, L., Zhou, H., Yu, S., Xu, C., Li, X., et al. (2008) · Nature Genetics · doi:10.1038/ng.143 · Cited by 1,627
Self-citationFan, C., Xing, Y., Mao, H., Lu, T., Han, B., Xu, C., Li, X., & Zhang, Q. (2006) · Theoretical and Applied Genetics · doi:10.1007/s00122-006-0218-1 · Cited by 1,493
Self-citationLinking differential domain functions of the GS3 protein to natural variation of grain size in rice
Mao, H., Sun, S., Yao, J., Wang, C., Yu, S., Xu, C., Li, X., & Zhang, Q. (2010) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1014419107 · Cited by 734
Self-citationHeterosis: revisiting the magic
Lippman, Z. B., & Zamir, D. (2007) · Trends in Genetics · doi:10.1016/j.tig.2006.12.006 · Cited by 656
Hua, J., Xing, Y., Wu, W., Xu, C., Sun, X., Yu, S., & Zhang, Q. (2003) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0437907100 · Cited by 405
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Metadata
- Authors
- Hua, J. P., Xing, Y. Z., Xu, C. G., Sun, X. L., Yu, S. B., & Zhang, Q.
- Venue
- Genetics
- Publisher
- Oxford University Press (OUP)
- Published
- 2002-12-01
- Volume
- 162
- Issue
- 4
- Pages
- 1885-1895
- ISSN
- 0016-6731 (ISSN-L)
- 1943-2631
- OpenAlex
- W1952662891
- Cited by
- 265
- References
- 30
- FWCI
- 1.83
- Type
- journal article
- Language
- en
- Open access
- closed
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- Hua, J. P., Xing, Y. Z., Xu, C. G., Sun, X. L., Yu, S. B., & Zhang, Q. (2002). Genetic Dissection of an Elite Rice Hybrid Revealed That Heterozygotes Are Not Always Advantageous for Performance. Genetics. https://doi.org/10.1093/genetics/162.4.1885
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