Physio-Morphological Characters of F<sub>1</sub> Hybrids of Rice (<i>Oryza sativa</i> L.) in Japonica-Indica Crosses

et al. The relationship of differential expression of genes in GA biosynthesis and response pathways with heterosis of plant height in a wheat diallel cross. Heterosis in internode elongation and plant height is commonly observed in hybrid plants, but the molecular basis for the increased internode elongation in hybrids is unknown. In this study, midparent heterosis in plant height was determined in a wheat diallel cross involving 16 hybrids and 8 parents, and real-time PCR was used to analyze alterations in gene expression between hybrids and parents.Significant heterosis of plant height and the first internode in length were observed for all 16 hybrids, but the magnitude of heterosis was variable for different cross combinations. Analysis revealed that the heterosis of the first internode was significantly correlated to that of plant height (r = 0.56, P < 0.05), suggesting that the increased elongation of the first internode is the major contributor to the heterosis in plant height. Real-time PCR analysis exhibited that significant difference in heterosis of gene expression was observed among all cross combinations. Moreover, heterosis of the first internode in length was correlated significantly and positively with expression heterosis of KS, GA3ox2-1, GA20ox2, GA20ox1D, GA-MYB and GID1-1, but significantly and negatively with expression heterosis of GAI and GA2ox-1, which is consistent with our recently proposed model of GAs and heterosis in wheat plant height, suggesting the alteration of GA biosynthesis and response pathways might be responsible for the observed heterosis in plant height.

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The relationship of differential expression of genes in GA biosynthesis and response pathways with heterosis of plant height in a wheat diallel cross

Wang

Yao

Peng

et al. 2009

Chin. Sci. Bull.

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Implementation of a dynamic specific leaf area (SLA) into a land surface model (LSM) incorporated crop-growth model

Li,

Zhan,

et al. 2023

Computers and Electronics in Agriculture

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Analysis of yield attributes and crop physiological traits of Liangyoupeijiu, a hybrid rice recently bred in China

Katsura

Maeda

Horie

et al. 2007

Field Crops Research

153

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Physio-Morphological Characters of F₁ Hybrids of Rice (Oryza sativa L.) in Japonica-Indica Crosses

Cited by 8 publications

References 14 publications

The relationship of differential expression of genes in GA biosynthesis and response pathways with heterosis of plant height in a wheat diallel cross

The relationship of differential expression of genes in GA biosynthesis and response pathways with heterosis of plant height in a wheat diallel cross

Implementation of a dynamic specific leaf area (SLA) into a land surface model (LSM) incorporated crop-growth model

Analysis of yield attributes and crop physiological traits of Liangyoupeijiu, a hybrid rice recently bred in China

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Physio-Morphological Characters of F1 Hybrids of Rice (Oryza sativa L.) in Japonica-Indica Crosses

Cited by 8 publications

References 14 publications

The relationship of differential expression of genes in GA biosynthesis and response pathways with heterosis of plant height in a wheat diallel cross

The relationship of differential expression of genes in GA biosynthesis and response pathways with heterosis of plant height in a wheat diallel cross

Implementation of a dynamic specific leaf area (SLA) into a land surface model (LSM) incorporated crop-growth model

Analysis of yield attributes and crop physiological traits of Liangyoupeijiu, a hybrid rice recently bred in China

Contact Info

Product

Resources

About

Physio-Morphological Characters of F₁ Hybrids of Rice (Oryza sativa L.) in Japonica-Indica Crosses