Genetic analysis on tiller number and plant height per plant in rice (Oryza sativa L.)
Tiller number and plant height are two important agronomic traits of rice. In order to dissect their genetic architecture, QTL mapping for the two traits was conducted by using a DH population derived from an indica-japonica rice cross of IR64 × Azucena. Phenotypic data was evaluated in two crop sea...
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Zhejiang University Press
2006-09-01
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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/10.3785/1008-9209.2006.05.0527 |
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| author | LIU Gui-fu XU Hai-ming YANG Jian ZHU Jun |
| author_facet | LIU Gui-fu XU Hai-ming YANG Jian ZHU Jun |
| author_sort | LIU Gui-fu |
| collection | DOAJ |
| description | Tiller number and plant height are two important agronomic traits of rice. In order to dissect their genetic architecture, QTL mapping for the two traits was conducted by using a DH population derived from an indica-japonica rice cross of IR64 × Azucena. Phenotypic data was evaluated in two crop seasons and analyzed by the mixture-model based on composite interval mapping (MCIM) method. The results showed that tiller number is mainly controlled by both the general genetic factor and the GE interaction factor (with 61.7% of the general heritability and 17.2% of the GE interaction heritability). A total number of 19 QTLs was detected to associate with tiller number. Of these, 9 and 6 QTLs were with single locus effects and digenic effects, respectively. The epistatic effect between QTL 1-8 and QTL 1-12 was suggested to be a major effect due to the contribution of 21.6% in spring season. Plant height is mainly controlled by the general genetic factor with 92.6% of the general genetic heritability, which is influenced by a total number of 15 QTLs. Of those, 8 QTLs with additive effects, 1 QTL with additive × environment interaction effect and 4 pairs of epistatic QTLs with additive × additive interaction effects were detected. QTL 1-15 is suggested as a major QTL and the remaining QTLs were ones with minor effects. Significant negative partial phenotypic correlation was observed between the two traits. However, exploring the genetic basis of trait correlation is still necessary in further study. |
| format | Article |
| id | doaj-art-26dea9aad0fc450c9ebf6c2c02a9fc0c |
| institution | Matheson Library |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2006-09-01 |
| publisher | Zhejiang University Press |
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| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-26dea9aad0fc450c9ebf6c2c02a9fc0c2025-08-01T05:37:37ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552006-09-013252753410.3785/1008-9209.2006.05.052710089209Genetic analysis on tiller number and plant height per plant in rice (Oryza sativa L.)LIU Gui-fuXU Hai-mingYANG JianZHU JunTiller number and plant height are two important agronomic traits of rice. In order to dissect their genetic architecture, QTL mapping for the two traits was conducted by using a DH population derived from an indica-japonica rice cross of IR64 × Azucena. Phenotypic data was evaluated in two crop seasons and analyzed by the mixture-model based on composite interval mapping (MCIM) method. The results showed that tiller number is mainly controlled by both the general genetic factor and the GE interaction factor (with 61.7% of the general heritability and 17.2% of the GE interaction heritability). A total number of 19 QTLs was detected to associate with tiller number. Of these, 9 and 6 QTLs were with single locus effects and digenic effects, respectively. The epistatic effect between QTL 1-8 and QTL 1-12 was suggested to be a major effect due to the contribution of 21.6% in spring season. Plant height is mainly controlled by the general genetic factor with 92.6% of the general genetic heritability, which is influenced by a total number of 15 QTLs. Of those, 8 QTLs with additive effects, 1 QTL with additive × environment interaction effect and 4 pairs of epistatic QTLs with additive × additive interaction effects were detected. QTL 1-15 is suggested as a major QTL and the remaining QTLs were ones with minor effects. Significant negative partial phenotypic correlation was observed between the two traits. However, exploring the genetic basis of trait correlation is still necessary in further study.https://www.academax.com/doi/10.3785/1008-9209.2006.05.0527genetic analysistiller numberplant heightQTLrice |
| spellingShingle | LIU Gui-fu XU Hai-ming YANG Jian ZHU Jun Genetic analysis on tiller number and plant height per plant in rice (Oryza sativa L.) 浙江大学学报. 农业与生命科学版 genetic analysis tiller number plant height QTL rice |
| title | Genetic analysis on tiller number and plant height per plant in rice (Oryza sativa L.) |
| title_full | Genetic analysis on tiller number and plant height per plant in rice (Oryza sativa L.) |
| title_fullStr | Genetic analysis on tiller number and plant height per plant in rice (Oryza sativa L.) |
| title_full_unstemmed | Genetic analysis on tiller number and plant height per plant in rice (Oryza sativa L.) |
| title_short | Genetic analysis on tiller number and plant height per plant in rice (Oryza sativa L.) |
| title_sort | genetic analysis on tiller number and plant height per plant in rice oryza sativa l |
| topic | genetic analysis tiller number plant height QTL rice |
| url | https://www.academax.com/doi/10.3785/1008-9209.2006.05.0527 |
| work_keys_str_mv | AT liuguifu geneticanalysisontillernumberandplantheightperplantinriceoryzasatival AT xuhaiming geneticanalysisontillernumberandplantheightperplantinriceoryzasatival AT yangjian geneticanalysisontillernumberandplantheightperplantinriceoryzasatival AT zhujun geneticanalysisontillernumberandplantheightperplantinriceoryzasatival |