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近年来,广大群众对食品的嗜好已发生明显变化,特别是对水果,不单单追求对味道的提高。为适应这种消费动向,果树栽培者对改换新品种的要求强烈,因而对培育或引进新品种抱有很大希望。但对果树而言,在培育新品种或更换品种时,最大的障害是病毒病问题。例如对于新育成的柑桔品种在进行区城试验过程中,某些品系全部被速衰病毒所污染。在苹果方面,用元帅系新品种,在老品种
In recent years, the masses of the hobby of food have undergone significant changes, especially for fruit, not only the pursuit of the improvement of taste. In response to this trend of consumption, fruit growers have a strong demand for changing new varieties and thus have great hopes of cultivating or introducing new varieties. But for fruit trees, the biggest obstacle in cultivating new varieties or changing varieties is the virus disease problem. For example, for the newly bred citrus cultivars, all of the strains were contaminated by the rapid-decay virus during the zone test. In the Apple area, Marshal Department of new varieties, in the old varieties