增大水稻谷粒是提高水稻产量的重要途径之一。近几年国内外有不少从事大粒稻种的选育与性状遗传研究。熊振民等(1981)选育出谷粒千粒重达48—50克的“竹云糯”,滝田正等(1980)用日本“大丰”与中国长粒籼“长香稻”和意大利的“Sasia”杂交 Increasing rice grain is one of the important ways to increase rice yield. In recent years, many domestic and foreign large grain rice breeding and trait genetic research. Xiong Zhenmin et al. (1981) bred “Zhuliannuo” with a grain weight of 48-50 g and a rice grain with “Dafeng” from Japan and “Long Aromatic Rice” from China and “Sasia” from Italy. Hybridization