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