水稻穗颈节伤流势与源库质量的关系研究

就禾谷类作物而言，生产和输出光合同化物的叶片和贮藏物质的茎鞘作为源对产量的作用已有大量研究〔１～３〕。籽粒中蛋白质合成所需的氨基酸有些是叶片不能合成的（如色氨酸等），均来自于根系，矿质元素和水分也通过根系的吸收，因此，根也应该属于源的一部分。从系统学的整体性观点出发，相对于经济产量库容，禾谷类作物的源应包括叶源、茎鞘源（简称鞘源）和根源三部分。笔者认为，三源制造和运输的物质、能量和信息均需通过穗颈节进入产量库容，单位时间内输进库容的物质越多、持续时间越长，库容的充实度就越高。因此，把经济产量形成…

Relation Between Bleeding Potential in Neck of Spike and Source-sink Quality of Rice

The bleeding intensity and other physiological quality index were measured with a hybrid Shanyou 63 in 1997.It indicated that the bleeding intensity in neck of spike was different from that of basal internode, the bleeding potential (integral of bleeding intensity and its duration) in neck of spike was correlated positively with canopy apparent photosynthesis, single stem sheath weight, transportation percentage of matter stored in stem and sheath, basal internode bleeding potential, and ATPase of grain sink. The bleeding potential in neck of spike could be used as a synthetical quality index for three source and sink.