Pengcheng Li^1,2,#, Tianze Zhu^1,#, Yunyun Wang^1,2, Shuangyi Yin¹, Xinjie Zhu¹, Minggang Ji¹, Wenye Rui¹, Houmiao Wang¹, Zefeng Yang^1,2,*, Chenwu Xu^1,2,*

Phyton-International Journal of Experimental Botany, Vol.93, No.7, pp. 1441-1453, 2024, DOI:10.32604/phyton.2024.052219 - 30 July 2024

Abstract The nutritional composition and overall quality of maize kernels are largely determined by the key chemical components: protein, oil, and starch. Nevertheless, the genetic basis underlying these nutritional quality traits during grain filling remains poorly understood. In this study, the concentrations of protein, oil, and starch were studied in 204 recombinant inbred lines resulting from a cross between DH1M and T877 at four different stages post-pollination. All the traits exhibited considerable phenotypic variation. During the grain-filling stage, the levels of protein and starch content generally increased, whereas oil content decreased, with significant changes observed between… More >

Huijun Jiang^1,#, Kaien Zhai^3,#, Xiaofan Ye^3,#, Tianwei Hu², Jieming Jiang⁴, Xiaoqiu Dong¹, Weihuai Pan¹, Jianwei Pan², Jianxin Shou^1,*

Phyton-International Journal of Experimental Botany, Vol.91, No.12, pp. 2633-2648, 2022, DOI:10.32604/phyton.2022.021474 - 29 August 2022

Abstract Grain filling is a crucial process that affects yield in rice (Oryza sativa L.). Auxin biosynthesis and signaling are closely related to rice yield; therefore, it is important to understand the effects of auxin biosynthesis on rice grain filling to improve crop yield. In this study, we used physiological and molecular strategies to identify the roles of auxin in rice grain filling. Exogenous application of auxin (IAA) or auxin analogues (2, 4-D) to young spikelets and flag leaves improved the seed-setting rate and yield per spike. Furthermore, real-time quantitative PCR assays confirmed that nine members of More >