Study on high-yield characteristics of source and sink in Yangliangyou 6.

With three-line hybrid rice Shanyou 63 as control,the high-yield characteristecs of source and sink in two-line hybrid rice,Yangliangyou 6 was studied.Results showed that,compared with Shanyou 63,Yangliangyou 6 was superior in sink capability and its sink filling ability,photosynthetic ability,accumulation and translocation of photosynthetic product,synchronous increase of source-flow-sink.Yangliangyou 6 had excellent characters of high percentage of filled grain and grain-filling rate,which was an important improvement of seed-setting ability in two-line hybrid rice.