冬小麦新品种河农326生育节律及源库建造研究

The Growing Characteristics and Source sink Constitution of the New Early Mature Wheat Variety Henong 326

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 。

The growing characteristics and source sink constitution of Henong 326, a new early mature variety of winter wheat, were studied and compared with Jimai 36 and Jimai 24, which were winter wheat varieties (CK) of middle and late maturity. The result indicated that it was different degree that the growing and development of organs, the contradiction between source and sink, and grains relied on photosynthesis of leaves at late stage between Henong 326 and the check varieties. The result also showed that Henong 326 had better root system and coordination of the population stems, levaves and tillers than the check varieties; The leaves area at middle late stage and dry matter accumulation were higher significantly than the check; The growth and development of young ear and grain filling characters were also superior to the check.