小麦与黑麦杂交并对其杂种一代进行染色体加倍处理,是创造小黑麦初级品系、丰富小黑麦品种资源的基本工作。困难在于难以获得大量的不同遗传组成的杂交种子。只有少数小麦品种容易与黑麦杂交,极少数品种与黑麦的杂交结实率甚至可以象小麦种内杂交一样高。早 Crossbreeding of wheat with rye and chromosome doubling of its hybrids is the basic work to create primary triticale and to enrich the resources of triticale. The difficulty is that it is difficult to obtain a large number of hybrid seeds of different genetic compositions. Only a handful of wheat varieties are easily crossed with rye, and the seed setting rate of very few cultivars with rye can even be as high as that of wheat. early