为了使八倍体小黑麦的产量水平有较大幅度的提高,植株的高度必须从现在的140厘米以上降到100厘米左右。目前我们所用的唯一矮源来自一个代号为h353的杂交组合。这个矮源的优点是穗大、多花、脱粒难度适中、株高的变化幅度大;缺点是抗寒性和种子饱满度差,尤其是株高在100厘米以下的植株,种子饱满度很难达到3级,而且株高不易稳 In order to make octoploid triticale yield levels have greatly improved, the plant height must be reduced from the current 140 centimeters to 100 centimeters. The only dwarf source we are currently using is a hybrid set, codenamed h353. The advantages of this dwarf source are large spikes, more flowers, moderate threshing difficulties, and large changes in plant height. The disadvantage is that cold hardiness and seed fullness are poor, especially in plants with plant height below 100 cm. Reached level 3, but not easy to stabilize the plant height