Identifying natural genotypes of grain number per panicle in rice (Oryza sativa L.) by association mapping - Jianyin Xie; Fengmei Li; Najeeb Ullah Khan; Xiaoyang Zhu; Xueqiang Wang; Zhifang Zhang; Xiaoqian Ma; Yan Zhao; Quan Zhang; Shuyang Zhang; Zhanying Zhang; Jinjie Li; et al. (Genes & Genomics, 2019)