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五丰优268是以吉丰A为母本,R268为父本,杂交选育而成的杂交晚稻新组合。该组合株型紧凑,分蘖力强,株高适中,着粒密,结实率高,熟期理想,丰产性好,在江西等地具有较好的开发利用价值。1选育过程五丰优268是江西金山种业用广东农科院水稻所选育的三系不育系五丰A与自选恢复系R268配组选育而成的杂交晚稻新组合。父本R268于2002年夏季利用晚稻早熟恢复系R80为母本,R90为父本,进行有性杂交,
Wufengyou 268 is a new hybrid late rice combination which was bred by crossing with Ji Feng A as female parent and R268 as male parent. The combination has the advantages of compactness, strong tillering ability, moderate plant height, dense grain, high seed setting rate, ideal maturity, high yield and good development and utilization value in Jiangxi and other places. 1 Breeding process Wufengyou 268 is a new combination of late-season hybrid rice in Jiangxi Jinshan Seed Industry, which was bred from three-line CMS line Wufeng A and R268 with the restorer line R268 from Guangdong Academy of Agricultural Sciences. In the summer of 2002, the male parent R268, using the R80 early-maturity restorer line as the female parent and R90 as the male parent,