Genetic analysis for pod weight at different developmental stages in Brassica napus L
Pod weight (PW), an important quantitative trait very closely related to seed yield, was analyzed using conditional and unconditional genetic models to find out the dynamic effects of genes for this trait during rapeseed development, which comprised of pods harvested at 15, 22, 29, 36 and 43 days af...
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| Format: | Article |
| Language: | English |
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Zhejiang University Press
2009-01-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
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| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2009.01.006 |
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| author | LI Yun-xia Variath Murali-Tottekkaad WU Jian-guo SHI Chun-hai |
| author_facet | LI Yun-xia Variath Murali-Tottekkaad WU Jian-guo SHI Chun-hai |
| author_sort | LI Yun-xia |
| collection | DOAJ |
| description | Pod weight (PW), an important quantitative trait very closely related to seed yield, was analyzed using conditional and unconditional genetic models to find out the dynamic effects of genes for this trait during rapeseed development, which comprised of pods harvested at 15, 22, 29, 36 and 43 days after flowering and fertilization. For the unconditional analysis, the additive effects were found to be more important at most stages except for the developmental time of 22 day at which the dominant effects were more prominent. For the conditional analysis, 16 - 22 days after flowering was found to be the most active period for dynamic expression of genes related to pod weight as many new genes were expressed during this period. Heritability analysis revealed that selection in early generations could be effective for improving pod weight in oilseed rape breeding. Prediction of genetic effects for oilseed rape parents showed that Double 20-4, Zhong R-888 and Tower could be used for improving PW in oilseed rape breeding, which Zhong R-888 was the best one. The results further indicate that the heterosis over mid-parent value based on population mean at the stages of 16-22 and 23-29 days was significantly larger than those at other stages. |
| format | Article |
| id | doaj-art-4fae3fb1697c47d181e830152f78e3d0 |
| institution | Kabale University |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-4fae3fb1697c47d181e830152f78e3d02025-08-20T03:34:18ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552009-01-0135455010.3785/j.issn.1008-9209.2009.01.00610089209Genetic analysis for pod weight at different developmental stages in Brassica napus LLI Yun-xiaVariath Murali-TottekkaadWU Jian-guoSHI Chun-haiPod weight (PW), an important quantitative trait very closely related to seed yield, was analyzed using conditional and unconditional genetic models to find out the dynamic effects of genes for this trait during rapeseed development, which comprised of pods harvested at 15, 22, 29, 36 and 43 days after flowering and fertilization. For the unconditional analysis, the additive effects were found to be more important at most stages except for the developmental time of 22 day at which the dominant effects were more prominent. For the conditional analysis, 16 - 22 days after flowering was found to be the most active period for dynamic expression of genes related to pod weight as many new genes were expressed during this period. Heritability analysis revealed that selection in early generations could be effective for improving pod weight in oilseed rape breeding. Prediction of genetic effects for oilseed rape parents showed that Double 20-4, Zhong R-888 and Tower could be used for improving PW in oilseed rape breeding, which Zhong R-888 was the best one. The results further indicate that the heterosis over mid-parent value based on population mean at the stages of 16-22 and 23-29 days was significantly larger than those at other stages.https://www.academax.com/doi/10.3785/j.issn.1008-9209.2009.01.006oilseed rape (<italic>Brassica napus</italic> L.)pod weightdevelopmental geneticsheritabilityheterosis |
| spellingShingle | LI Yun-xia Variath Murali-Tottekkaad WU Jian-guo SHI Chun-hai Genetic analysis for pod weight at different developmental stages in Brassica napus L 浙江大学学报. 农业与生命科学版 oilseed rape (<italic>Brassica napus</italic> L.) pod weight developmental genetics heritability heterosis |
| title | Genetic analysis for pod weight at different developmental stages in Brassica napus L |
| title_full | Genetic analysis for pod weight at different developmental stages in Brassica napus L |
| title_fullStr | Genetic analysis for pod weight at different developmental stages in Brassica napus L |
| title_full_unstemmed | Genetic analysis for pod weight at different developmental stages in Brassica napus L |
| title_short | Genetic analysis for pod weight at different developmental stages in Brassica napus L |
| title_sort | genetic analysis for pod weight at different developmental stages in brassica napus l |
| topic | oilseed rape (<italic>Brassica napus</italic> L.) pod weight developmental genetics heritability heterosis |
| url | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2009.01.006 |
| work_keys_str_mv | AT liyunxia geneticanalysisforpodweightatdifferentdevelopmentalstagesinbrassicanapusl AT variathmuralitottekkaad geneticanalysisforpodweightatdifferentdevelopmentalstagesinbrassicanapusl AT wujianguo geneticanalysisforpodweightatdifferentdevelopmentalstagesinbrassicanapusl AT shichunhai geneticanalysisforpodweightatdifferentdevelopmentalstagesinbrassicanapusl |