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为了给早熟小麦新品种河农 3 2 6的推广应用以及育种单位选配优良亲本材料提供理论依据 ,对河农 3 2 6的生育节律和源库建造做了初步研究 ,并与中熟和晚熟冬小麦品种进行了比较。结果表明 ,不同熟期类型的冬小麦品种前中期各器官生长发育进程、源库矛盾及其籽粒对生育后期功能叶片光合作用的依赖程度均有所不同 ;与中、晚熟品种相比 ,河农 3 2 6根系较发达 ,群体茎叶、分蘖器官形成的同期性和协调性好 ,中后期总叶面积与干物质积累量明显较高 ,幼穗发育与籽粒灌浆进程均较快 ,其特性充分体现了早熟与高产的统一性
In order to provide a theoretical basis for the popularization and application of early-maturing wheat variety Nongnong 3 2 6 and selection of elite parent materials in breeding units, a preliminary study on rhythm and source bank construction of Nong Nong 3 2 6 was conducted, Winter wheat varieties were compared. The results showed that the growth and development of organs, the contradiction of source and sink and the dependence of their grain on the photosynthesis of functional leaves in the late maturing stage were different in different maturity types. Compared with middle and late maturing varieties, The root development and the grain filling process of panicle were more rapid and its characteristics fully manifested The unity of precocity and high yield