摘要
对首次引进的１００份美国稻种在贵阳种植观察分析，结果表明：大部分材料生育期为１５０～１７０ｄ，占总数的７４％；有效穗１１～２０穗／株，共５７份；穗粒数大部分为１０１～２００粒，３００粒以上有３份；千粒重在２１～３０ｇ共有８２份，３０ｇ以上有８份。发现特异种质资源：ＲＡ７３（与ｓｄ－１基因以及新矮源广丛、小粒Ｔｅｔｅｐ不等位）；Ｍｇ９１Ｂ、Ｌ２０２Ｂ、Ｍ２０１Ｂ（野败保持源）；Ｄｅｌｍｏｎｔ、Ｒｉｃｏ１（香稻源）；Ｔｏｄｕｃａｈ（丛生源）等，可以在育种上直接或间接利用。
rice varieties introduced from USA were planted and observed in Guiyang in 1996 The results showed that the growth duration of 74% of the varieties observed is 150～170 days Panicle number per plant of 11～20 accounts to 57% of the total Grain per ear of 101～200 makes up 76% 1000 grain weight of 21～30 g accounts to 82% Some special materials were found such as RA73 (different from sd 1 and new dwarf Tetep, Guangcong), Mg91B,L202B and M201B can be used as maintainer Delmont, Rico 1 and Toducah etc can be utilized also in the breeding directly or indirectly in future
出处
《贵州农业科学》
CAS
1997年第5期9-12,共4页
Guizhou Agricultural Sciences
关键词
稻种
资源
引种
性状
美国
rice variety
introduction
resources
characters
