北部高原春谷中晚熟区试谷子品种稳定性研究

A Study on Stability in the Regional Test Middle-late Spring Foxtail Millet Varieties at the Northern High Plateau Area

对参加我国北部高原区谷子品种联合区试的１４个品种的丰产性、稳产性、主要性状的适应性以及它们之间的关系进行了初步研究。结果表明：丰产性、稳产性均较好的有８５品４，８４２０２等４个品种。谷子品种的产量与其稳定性参数（回归系数ｂ）呈弱中度负相关；品种稳定性参数与主要农艺性状，特别是稳重、穗粒重及出谷率呈中高度负相关。

Yield stabilities, adaptive capacities of main characters and the relationship among them in the 14 regional test varieties were preliminarily studied at the northern China's high plateau area. It was indicated that '85pin4', '84202'ect four varieties showed high and stable yield characters. In the varieties, yields were negatively correlated to regression coefficients lightly or moderately. Regression coeffients were negatively correlated to main charaters, especially spike weights, grain weights and rates of grain production.