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  • Open Access

    ARTICLE

    Exploring the Trait Plasticity of ipa1-2D and qPL6 under Different Nitrogen Treatments and Heading Periods

    Wenshu Zhuang1,#, Guangyang Jin1,#, Yiting Zou1, Zhong Bian1, Dong Xie1, Shuwei Zhang1, Hadi Yeilaghi1, Liangliang Yu3, Muiyun Wong4, Xiaolei Fan1,2, Dongsheng Zhao1,2, Qiaoquan Liu1,2, Lin Zhang1,2,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.11, pp. 2737-2754, 2024, DOI:10.32604/phyton.2024.054649 - 30 November 2024

    Abstract Panicle size is one of the important factors in shaping yield potential in rice, but it shows plasticity in different environments, which leads to yield fluctuation. Variations in panicle size among varieties are largely determined by quantitative trait loci (QTLs). QTL analysis could elaborate on the environmental impact on trait plasticity using nearly isogenic lines (NILs) of different QTLs. Two QTLs, ipa1-2D and qPL6 are identified to have pleiotropic contributions to panicle size and plant architecture, but their responses to different growth conditions are still unclear. In this study, we developed NILs harboring a single locus… More >

  • Open Access

    ARTICLE

    Exploration and Validation of the Potential Downstream Genes Underlying ipa1-2D Locus for Rice Panicle Branching

    Lin Zhang1,2,*, Dong Xie1, Zhong Bian1, Yiting Zou1, Han Zhou1, Wenlu Cai1, Hadi Yeilaghi1, Xiaolei Fan1,2, Changquan Zhang1,2, Qiaoquan Liu1,2,*

    Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 773-787, 2021, DOI:10.32604/phyton.2021.015229 - 30 March 2021

    Abstract In recent years, some super hybrid rice varieties were bred with strong culms and large panicles, which are mainly contributed by the ipa1-2D locus. A gain-of-function allele of OsSPL14 is the ipa1-2D and it can greatly increase the panicle primary branch number. However, the key downstream genes mediating this trait variation are not fully explored. In this study, we developed high-quality near-isogenic lines (NILs) with a difference of only 30 kb chromosomal segment covering the ipa1-2D locus. Using the NILs, we explored the impact of ipa1-2D on five sequential stages of early inflorescence development, and found that the… More >

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