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高粱穗(花序)类型繁复,花序结构与单穗粒数密切相关,后者与单粒重量共同决定单穗籽粒产量。花序的主要结构因素是中轴长度、分枝级数、各级分枝数量和长度、分枝角度和着生姿态、分枝和小穗的着生密度。它们的错综结合,构成各种穗形,同时决定单穗的籽粒数量。研究花序结构的遗传规律,对于高粱理想穗型的选育、高产组合的选配,都有直
Sorghum spike (inflorescence) complicated, inflorescence structure and the number of grains per spike is closely related to the weight of the latter with single grain weight per panicle to determine grain yield. The main structural factors of inflorescences are the length of axils, the number of branching stages, the number and length of branches at all levels, the branching angle and stature, the living density of branches and spikelets. Their intricate combination to form a variety of spike shape, while determining the number of single panicle grain. Studying the genetic law of inflorescence structure, for sorghum ideal panicle selection, selection of high-yield combinations, there are straight