Guanghui Yang, Man Feng, Kuohai Yu, Guangxian Cui, Yan Zhou, Lv Sun, Lulu Gao, Yumei Zhang, Huiru Peng, Yingyin Yao, Zhaorong Hu, Vincenzo Rossi, Ive De Smet, Zhongfu Ni, Qixin Sun, Mingming Xin
Interploidy hybridization between hexaploid and tetraploid genotypes occurred repeatedly during genomic introgression events throughout wheat evolution, and is commonly employed in wheat breeding programs. Hexaploid wheat usually serves as maternal parent because the reciprocal cross generates progeny with severe defects and poor seed germination, but the underlying mechanism is poorly understood. Here, we performed detailed analysis of phenotypic variation in endosperm between two interploidy reciprocal crosses arising from tetraploid (Triticum durum, AABB) and hexaploid wheat (Triticum aestivum, AABBDD)...
October 17, 2023: Journal of Integrative Plant Biology