在小麦属间杂交时,杂种后代中外来种的异源染色体的转移一般分为两类。一类是整组染色体的转移,例如,八倍体“小黑麦”、八倍体“小偃麦”等;另一类是部分染色体的转移,例如,异附加系、异代换系、易位系。整组染色体的转移往往带有一些难以克服的不良性状,如晚熟、育性低、籽粒不饱满等。而部分染色体的转移可以根据人们的需要,把带有某一优良性状的染色体或染色体片段转移到小麦上。因此,部分 In interspecific hybridization, the transfer of heterologous chromosomes in the offspring of offspring is generally divided into two categories. One is the transfer of the entire group of chromosomes, for example, octoploid “Triticale”, octoploid “Triticum aestivum”; the other is part of the transfer of chromosomes, for example, alloplasmic lines, Department of translocation. The entire group of chromosome transfer often with some difficult to overcome the bad traits, such as late maturity, low fertility, grain is not full and so on. The transfer of some chromosomes can be based on the needs of people, with some good traits of chromosomes or chromosome fragments transferred to wheat. So, part