杂交中粳新组合Ⅲ优98特征特性及栽培技术

Ⅲ优 98是安徽省农科院水稻研究所与日本三井化学株式会社、中国种子集团公司合作 ,利用BT型不育系 2 3A与恢复系R98配组育成的三系杂交粳稻组合。该组合具有米质优、产量高、抗性好等特点。 2 0 0 2年通过安徽省农作物品种审定委员会审定

Characteristics and Cultural Techniques of the Three-line Medium Japonica Hybrid Rice--Ⅲ You 98

III You 98 (23A/R98), newly-developed by the Rice Research Institute of Anhui Academy of Agricultural Sciences, the Mitsui Chemicals, Inc., Japan and the China National Seed Group Corporation, was a three-line japonica hybrid rice. It was released to farmers in February, 2002. In Anhui Medium Japonica Rice Variety Regional Trials in 1998 and 1999, it yielded a mean of 8.817 t/hm 2, 12.8% higher than that of the check 80 You 121, with a growth duration of 146 days. It was about 120 cm tall and had strong tillering ability and strong lodging resistant ability. Its seed setting percentage was more than 80% with a mean of 180 spikelets/panicle and a 1?000-grain weight of 24～25?g.All quality characters of III You 98 could reach the first or second class fine quality rice standards issued by the Chinese Ministry of Agriculture. The combination was evaluated for rice blast (2～3) and bacterial leaf blight (5) resistance in Anhui (both scored on the 1-9 scales). The high-yielding cultural techniques for the combination were also discussed.