Jiang, Z. and Ding, J. and Han, Y. and Teng, W. and Zhang, Z. and Li, W. (2012) Identification of QTL underlying mass filling rate at different developmental stages of soybean seed. Euphytica. pp. 1-12.
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Abstract
The mass accumulation in the developing soybean seed has been shown to be a dynamic process with various rates at different filling stages. The objective of this study was to identify quantitative trait loci (QTL) underlying seed filling rate of soybean. 143 recombinant inbred lines derived from the cross of Charleston and Dongnong 594 were used to obtain field data in 2004 and 2005. In present study, one genetic linkage map including 164 SSR markers and 35 RAPD markers was constructed using 143 F5 derived RILs from the cross between Charleston and Dongnong 594 (data not shown). The order of most markers is consistent with Song et al. (Theor Appl Genet 109: 122–128, 2004). The average number of markers on each linkage group was 9.7 with an average length of 153.36 cM. Twenty-nine unconditional QTL underlying seed filling rate at different developmental stages were mapped onto fourteen linkage groups. The phenotypic variation of seed filling rate explained by these unconditional QTL ranged from 4.29 to 33.3 %. Thirty-nine conditional QTL underlying seed filling rate were mapped onto sixteen linkage groups. The phenotypic variation explained by these conditional QTL ranged from 4.47 to 25.03 %. The locations, numbers, genetic effects and types of QTL for seed filling rate were different at each seed developmental stage. Genotype by environment interaction effects among QTL related to seed filling rate were observed. In addition, several genomic regions that influenced seed filling rate were detected.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Seed filling rate – Conditional QTL – Unconditional QTL – SSR markers – G × E interaction |
| Author Affiliation: | Northeast Agricultural University, Harbin, 150030, China, Northeast Agricultural University, Harbin, 150030, China |
| Subjects: | Crop Improvement |
| Divisions: | Soyabean |
| Depositing User: | Mr. SanatKumar Behera |
| Date Deposited: | 15 Sep 2012 06:30 |
| Last Modified: | 15 Sep 2012 06:31 |
| Official URL: | http://dx.doi.org/10.1007/s10681-012-0794-x |
| URI: | http://eprints.icrisat.ac.in/id/eprint/7904 |
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