平榛与龙榛的远缘杂交F1代田间评比试验初报

摘要

在平榛与龙榛的远缘杂交育种中F1代田间评比试验是杂交榛子新品种选育的关键环节之一。为了给今后杂交榛子新品种的选育奠定基础，对平榛Corylus heterophylla Fisch.×龙榛C.heterophylla × C.avellana杂交F1代进行了田间评比试验，并对其各项生长性状指标进行了测定与分析。测定结果表明：在平榛C.heterophylla×龙榛C.heterophylla × C.avellana杂交F1代良种幼树各项生长性状指标值中，只有当年高有差异，其余各项指标值之间的差异则不显著，这说明，当年定植后苗木尚处于缓苗期，其生长缓慢，故各项测定值之间的差异不大；龙榛C. heterophylla × C.avellana×平榛C. heterophylla杂交F1代良种幼树各项生长性状指标的测定值，各杂交组合间存在着明显的个体差异。评比试验结果还表明，今后依据对杂交F1代个体在抗寒、结实等方面表现出的优异特性的评比结果，可望选育出优质、高抗、丰产的杂交榛子新品种。%In distant hybrid breeding of Corylus heterophylla and C. heterophylla×C. avellana, the ifeld comparison test of F1 generation is a key link to new variety breeding. In order to lay a foundation for breeding new hybrid varieties, a ifeld comparison test of F1 generation of C. heterophylla and C. heterophylla×C. avellana was carried out, and some growth performance indexes were determined and analyzed. The results show that the growth performance indexes of hybrid F1 generation have no signiifcant differences except height at current year. Because the seedlings planted in current year are at seedling recovering stage, and slowly grow. The growth performance indexes of hybrid F1 generation have clear individual differences among hybrid combinations. In future, new high-quality, high-resistance and high-yielding varieties of hybrid hazelnut will have hope of breeding based on the comparison results of ifne performances of hybrid F1 generations from the respects of cold resistance, fruiting, and so on.