Genetic and cytological analysis of a novel type of low temperature-dependent intrasubspecific hybrid weakness in rice. oleh Chong-Yun Fu, Feng Wang, Bing-Rui Sun, Wu-Ge Liu, Jin-Hua Li, Ru-Fang Deng, Di-Lin Liu, Zhen-Rong Liu, Man-Shan Zhu, Yi-Long Liao, Jian-Wei Chen