优质杂交稻金优系列组合基本特性研究

通过１９９２～１９９３年的品比、区试、示范和米质分析及抗性鉴定，证明金优组合具有米质优、产量高、抗性较强、熟期早、农艺性状好的特点，值得在生产上大力推广应用。

Characteristics of Jinyou Combinations with Fine Grain Quality in Hybrid Rice

From the OYTs,RYTs,Productional demonstrations,analyses of grain quality and identifica-tions of resistance during 1992 and 1993,it was found that the combinations made from Jin 23A(Jinyou com-binations )performed good grain quality, high yielding ability,strong resistance, early maturity and goodagronomic charaeteristics.For example,Jinyou Gui 99, Jinyou 63 and Jinyou 170 possess the grain qualitytraits all reaching the 3rd class criteria of fine grain quality laid down by Hunan Province,yield generally over6.75 t/ha with strong cold tolerance,intermidiate tillering capacity,high percentage of earbearing tiller andcommon fertilizer tolerance.Among the Jinyou hybrids, Jinyou Gui 99 has been examined and approved atthe provincial level and Jinyou 46 at the prefectural level. In 1992 and 1993,the Jinyou combinations havebeen demonstratively grown under an area of about 1666.7 ha.