植胶实践证明,亲本材料本身的表现与其在杂交后代中所起的作用并不完全一致,即使是那些经受过大寒潮考验并持有高产性状的母树,也不一定都能通过嫁接而获得同其亲本特性类似的无性后代。由于抗寒,高产性状的遗传本质的复杂性,所以对种植材料的利用上总是依赖多次田间系比和自然选汰。生产实践上渴望找到预测胶树抗寒、高产的确切指标,以期减轻浩繁 Gluing practices have shown that the performance of the parental material itself is not exactly the same as that of the parental lineage, and even those trees that have been tested for high cold tolerance and have high yield traits may not be able to be grafted Asexual progeny of similar parents. Due to the complexity of genetic nature of cold-resistant and high-yielding traits, the utilization of planting materials always depends on the ratio of field lines to the natural selection. Production practice is eager to find the exact indicators of prediction of cold hardwood, high yield, in order to reduce voluminous