以母本华矮11、父本华大麦6号和华矮11/华大麦6号122个株系的DH群体为研究对象，通过调查耐寒相关形态指标来选择耐寒性强的大麦株系。结果表明，大麦苗期幼苗匍匐性越好，其耐寒性也越强，更能安全度过低温寒害；返青期前，SPAD值与其耐寒程度呈显著正相关；成熟期空秕率、产量与SPAD值相关性不显著，说明该株系的耐寒性遗传受多种数量基因的影响。

The DH population of 122 lines of female Huaai 11， male Huadamai 6 and Huaai 11/Huadamai 6 was used as the research objects. The barley lines with strong cold tolerance were selected by investigating the morphological indexes related to cold tolerance. The research indicates that the better the creeping ability of barley seedlings， the stronger the cold tolerance at the seedling stage， and the better the safety to survive the cold injury; SPAD value was positively correlated with cold tolerance degree before the greening stage. There was no significant correlation between empty abortive rate， yield and SPAD value at maturity stage， indicating that the cold tolerance heredity of this strain was affected by a variety of quantitative genes.

S512.3