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江淮下游七个有限、五个无限结荚习性大豆地方品种用于研究开花习性、各部节位的结荚率。大豆植株划分为主花序、副花序、一次分枝及二次分枝四部分。生育期相近时,有限比无限着生较少主花序、较多后三者。对应节位主花序的花数也较多。开花结荚的主要部位为主花序及一次分枝,开花盛期为第4—14天。两种类型具有同一开花习性,即各部、节位,各花序的开花次序均为由下而上,同一节副花序在主花序开完后再开花。品种结荚率与成熟期及开花数为负相关。主花序结荚率常高于其他部分,各节主花序结荚率由下而上先增后减,但有限性品种顶端甚高;副花序结荚率由下而上降低,而对应节上有限比无限高。根据自然结荚率选择品种及部、节位可以提高南方大豆杂交成荚率。
The Yangtze River and the Huai River downstream of seven limited, five unlimited pod habit soybean varieties used to study flowering habits, the knot rate of each node. Soybean plants divided into the main inflorescences, auxiliary inflorescences, a branch and secondary branches of four parts. When the growth period is similar, there are fewer inflorescences with fewer and fewer inflorescences, and the latter three are more. Corresponding to the main flower inflorescence node number is also more. The main parts of the flowering pod is the main inflorescence and a branch, flowering period for the first 4-14 days. Both types have the same flowering habits, that is, each department, node, the inflorescence flowering order from the bottom up, with the same section of the next inflorescence flowering in the main inflorescence. The varieties pod rate and maturity and the number of flowering is negatively correlated. The pod rate of the main inflorescence is often higher than that of the other parts. The pod rate of the main inflorescences in each node increases first and then decreases from the bottom up, but the top of the limited varieties is very high. The pod rate of the inflorescence decreases from the bottom to the top, Limited to infinite than high. According to the natural rate of pod selection of varieties and parts, node can increase the South soybean hybrid pod rate.