【摘要】 为找到清楚、简便、准确地鉴别大豆茎生长习性类型的方法,于1988-1997年分别在南京和石家庄,研究了来自不同地区的共1536份品种和6个不同杂交组合F1、F2、F3Bernard标准的茎生长习性类型及有关的11个性状,从中选出有无顶花序(ETIMS)和上部节数相对值(RVNN)作为划分茎生长习性类型的成分性状。划分标准为: (1)有限型,有顶花序, RVNN< 0. 2 (夏播)或RVNN<0.25(春播);(2)亚有限型,有顶花序,RVNN≥0.2(夏播)或RVNN≥0.25(春播);(3)无限型,无顶花序,RVNN≥0.2(夏播)或RVNN≥0.25(春播)。用该法划分的结果与用Bernard标准划分的结果有很高的一致性,故在田间调查时可以用成分性状法代替Bernard方法。该法鉴定结果明确、稳定,方法简便易行,可在R3~R7 期间于田间一次确定。更多还原

【Abstract】 In order to find a simple, clear, and exact identification procedure for soybean stem growth habit type, Bernard’s stem termination types and related characters of 1536 landraces and F-1,F-2,F-3 of 6 crosses were studied in Nanjing and Shijiazhuang in 1988-1997. The relative value of number of nodes above the node with largest leaf on main stem (RVNN) and the existence of terminal inflorescence on main stem (ETIMS) were found to be the component characters of stem growth habit types. By using the component characters, stem growth habit could be divided clearly into determinate type (with ETIMS, RVNN<0.2 in summer planting or RVNN<0.25 in spring planting), semi-determinate type (with ETIMS, RVNN≥0.2 in summer planting or RVNN≥0.25 in spring planting), and indeterminate type (without ETIMS, RVNN≥0.2 in Summer planting or RVNN≥0.25 in spring planting).There existed good coincidence between the component method and Bernard’s method. The results by this method are relatively accurate and stable and the survey can be finished at one time of observation during R-3-R-7. Therefore the former may substitute for the latter in field survey.更多还原