优质籼稻扬稻6号库、源、流特性研究

 以生产主栽杂交稻汕优 6 3为对照 ,研究了优质高产多抗新品种扬稻 6号的库、源、流特性。结果表明 ,扬稻 6号库容较大 ,填库能力强 ;株叶型配置好 ,透光率强 ,消光系数小 ,叶绿素含量高 ,光合产物积累量大 ,尤其是抽穗至成熟期光合作用能力强 ,粒叶比高 ;花后光合产物对籽粒充实的贡献大 ,源库间流的通畅性好 ,库、源、流能在较高水平上协调是扬稻 6号及其作亲本资源配制杂交稻两优培九等组合优质高产的主要成因

Characteristics of Sink, Source and Flow in Good Quality Indica Rice Yangdao6

The characteristics of sink,source and flow were studied on indica rice Yangdao6 with good quality, high yield and multi resistance diseases.The result showed, compared with indica hybrid Shanyou63, that Yangdao6 was superior in sink capability and filling sink ability, better plant type for light transmittance,leaf type and chlorophyll content for sunlight absorption,and greater photosynthetic ability especially during the grain filling period, and a higher ratio of grains to leaf area.More photosynthate was translated to grains after flowering,and the flow was efficient form the source to sink. The balance and coordination of sink,source and flow were one of main reseason for Yangdao6 being used as one of the key parents of good quality and high yield hybrid rice variety liangyoupeijiu.