高产籼糯品种库、源、流形态特性研究

Characteristics of storage, resource and current of high-yielding indicaglutinous rice varieties

以我国南方原主栽籼糯稻品种早糯717为对照,研究了国家审定的现行主栽高产籼糯稻品种鄂荆糯6号和闽岩糯的库、源、流形态特性。结果表明,鄂荆糯6号库容量大,填库能力较低,冠层叶较挺直,叶面积指数大,干物质积累总量多,茎鞘叶物质在齐穗后向穗部转运量大,但后期光合生产量较低,从而导致库虽大但源不足;闽岩糯库容量较大,填库能力强,冠层叶挺直,比叶重高,叶面积指数较小,但黄熟期仍有较大的绿叶面积,粒叶比高,虽然干物质积累总量较少,但干物质生产、转化效率高,库、源、流协调。

The characteristics of storage and resource and current of Ejingnuo 6 and Minyannuo, the main high-yielding indica glutinous rice varieties which were examined and approved by the nation were studied with Zaonuo 717, a main early indica glutinous rice variety in South China, as the control. The result indicated that Ejingnuo 6 showed a greater storage capacity and lower filling ability, more erect leaves in canopy, large leaf area index, more total dried matter accumulation, more matter transported to panicle from stem and sheath and leaves after heading but lower production of assimilate at late growing stage conducing a large storage and a relatively deficient resource. Minyannuo showed a greater storage and strong filling ability, erect leaves in canopy and higher weight of dry leaves in per unit area. Tts leaf area index was less but there were greater area of green leaves at the stage of yellow ripeness, high ratio of grain to leaf. Its total dry matter accumulation was fewer, but the dry matter production and transformation ratio were high. Its relation of storage and resource and current were most consistent.