【摘要】 利用温敏型两用核不育系 3 60S与自育优质抗病恢复系Uni2 0 0 0配组 ,育成香型优质多抗杂交水稻新组合黔香优 2 0 0 0。经2 0 0 2— 2 0 0 3年贵州省杂交水稻区试鉴定和在不同生态区进行生产试验 ,黔香优 2 0 0 0平均产量分别为 795 5 .5 5和 73 19.2 5kg hm2 ,与高产对照相当 ,且米质优 ,12项指标均达部颁优质米标准二级以上 ,其中 9项指标达部颁优质米标准一级。稻瘟病接种和自然鉴定结果表明 ,该组合抗稻瘟病。抗寒性亦强于对照。黔香优 2 0 0 0于 2 0 0 4年 4月通过贵州省农作物品种审定委员会审定 ,可在贵州省中高海拔地区推广。更多还原

【Abstract】 Qianxiangyou 2000,a new quasi-aromatic two-line hybrid rice combination with good quality, high yield and strong resistances to blast and coldness,was certified and released by Guizhou Crop Variety Release Committee in April,2004. Its female parent was 360S,a new PTGMS line with low critical sterility-inducing temperature and fine quality, and its male parent was Uni 2000 ,a new R Line with strong resistances to blast. The yield of Qianxiangyou 2000 was (7 955.55) kg/hm~2,close to that of Shanyou Wan 3 or Jinyou 77 ,two elite hybrid checks, in the regional trials of Guizhou Province in 2002—2003, and it yielded 7 319.25 kg/hm~2,close to that of Jinyou 77, in demonstrative productions at 5 locations in Guizhou in 2003. It also showed strong cold resistance and blast resistance. Its grain quality was very good with all of its 12 quality characters up to the first or second class standards of fine quality rice issued by the Ministry of Agriculture of China.It is suitable for growing in middle-high elevation regions in Guizhou.更多还原