%D 2002 %0 ARTICLE %T Developmental behavior of gene expression for brown rice thickness under different environments . %J Genesis %V 33 ( 4 ) %P 185-90 %A Shi CH %A Wu JG %A Wu P %M pub12203916 %X The dynamic changes of genetic effects , including main effects , and genotype x environment ( GE ) interaction effects on brown rice thickness ( BRT ) across environments were investigated by using the developmental genetic models . Seven cytoplasmic male sterile lines of indica rice ( Oryza sativa L ) as females and five restoring lines as males were used in a factorial design to produce grains of F ( 1 ) s and F ( 2 ) s in two environments ( years ) for developmental genetic analysis . The results indicate that genetic effects , especially GE interaction effects of triploid endosperm genes , cytoplasm genes , and diploid maternal plant genes were important to the performance of BRT at various filling stages of rice . The BRT was genetically controlled by the net genetic effects of genes expressed at the early and late filling stages ( 1-7 days and 15-21 days after flowering , respectively ) . The differences in net genetic effects under different environments for endosperm , cytoplasm , and maternal plant genes were found , and the net GE interaction effects were more important to BRT at the early filling and mature stages of rice . Some net genetic effects , especially for net cytoplasm effects spasmodically expressed , were detected among filling stages . Higher additive and cytoplasm main effects , along with their interaction effects , were found , which would be useful for selection for BRT in breeding programs . The predicated genetic effects at different filling stages show that the parents of V20 and Xieqingzao were better than others for improving BRT of progenies .