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当前,国外蔬菜育种的方向,是以培育具有高产、早熟、成熟集中,适于机械化一次采收和抗病耐贮等特点的蔬菜新品种为目标。近年来又非常注意培育适于加工和早熟品种,以及适合温室栽培的品种。其重点又偏重于果菜类。美国1966—1968年公布248个蔬菜新品种中,果菜类占70％,日本1958—1970年公布1000余个蔬菜新品种中,果菜类占65％。 蔬菜采用良种一般可增产15—20％,甚至增产1—2倍,因此,选育和推广良种,已成为国外普遍注意的问题。在育种中,更加强调进一步改进品质,提高产量、扩大杂交育种,
At present, the direction of foreign vegetable breeding is to cultivate new varieties of vegetables with high yield, precocious, mature and concentrated, suitable for mechanized one-time harvest and disease-resistant storage. In recent years, great attention has also been given to cultivating varieties suitable for processing and precocious varieties and suitable for greenhouse cultivation. The emphasis is on fruits and vegetables. Among the 248 new varieties of vegetables published in the United States from 1966 to 1968, fruits and vegetables accounted for 70% of the total. More than 1,000 new vegetable varieties were announced in Japan in 1958-1970, accounting for 65% of the total. The use of improved varieties of vegetables in general can increase 15-20%, or even 1-2 times increase, therefore, breeding and promotion of improved varieties has become a common concern in foreign countries. In breeding, more emphasis is placed on further improving quality, increasing production, expanding hybrid breeding,