继续了前已报导的人工低温试验,结果表明,油梨引进品种M—18686作为种子亲本,其抗寒性会遗传给自然授粉的大量实生苗.在人工低温试验中,这个群体的第二代实生树所表现的抗寒性,少数和原始的引进品种一样,群体的平均抗寒性从强到零.由于第二代群体显示出其它表型性状的遗传分离,因此,当前的研究再次说明:培育出园艺质量高而且抗寒的栽培品种是有可能的. Continue the previously reported artificial low temperature test, the results showed that the introduction of the pear variety M-18686 as the seed parent, its resistance to cold will inherit a large number of natural pollination of seedlings in the artificial low-temperature test, the second generation of this group The cold hardiness exhibited by the real tree, like that of the original introductory species, the average cold resistance of the population ranges from strong to 0. As the second generation showed genetic segregation of other phenotypic traits, the current study suggests again It is possible to cultivate cultivars of high quality and cold hardy gardening.