crossing system meaning in English

交叉盘系统
杂交系统

In the study , six different ecotype varieties of common wheat and f1 derived from 6 6 complete diallel crossing system were selected for the research on the characteristics and heterosis of spike differentiation . the results showed that heterosis existed in most key spike differentiation phases and varied with different ecotype varieties . heterosis of spike differentiation was positively correlated with heterosis of hybrid yield . finally , the author concluded that it was the best way to produce strong heterosis combination by selecting the mode of “ spring wheat winter wheat ” in huanghuai winter wheat region
对6个不同生态类型小麦品种及其完全双列杂交f1幼穗分化特点和穗分化杂种优势的研究表明,杂种幼穗分化各主要时期普遍存在杂种优势；不同生态类型组配方式的杂种穗分化优势不同；穗分化杂种优势与产量杂种优势具有一定相关关系；黄淮麦区杂交小麦最佳生态组配方式为春性品种冬性品种。