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在一个育种原种圈内,对桃树春季开花期和秋季落叶期的遗传力进行了估算。该原种囿新近引入的2个亲本一个为常绿类型,另一个的需冷量较高。假设无异型交配,该原始材料盛花期的遗传力估算值H~2为0.60±0.08SD,若有30%的随机交配,H~2则为0.67±0.08SD。假定无异型杂交,1988年11月18日以前落叶百分率的遗传力为0.33±0.08,而根据1989年11月14日收集的数据估算,H~2为0.49±0.08,如果有30%的随机交配,1988年11月18目前落叶百分率的遗传力H0为0.47±0.08,而据1989年11月14日收集的数据估算。H~2为0.05±0.08。盛花期和11月份落叶百分率之同的表型相关为0.21;0.18t(0.05)>0.21>0.26t(0.05)。显然,可以对这些性状比较容易地进行遗传鉴定。以防止冻害的发生,从而消除对壳囊孢属真菌和其它有关病原微生物的敏感性。
In a breeder breeding circle, the heritability of peach trees in spring and autumn deciduous phases was estimated. One of the two newly introduced parents of this species is an evergreen and the other has a higher chilling requirement. Assuming no heterosexual mating, the hereditary value of the original material at full-flowering stage was H ~ 2 0.60 ± 0.08SD, with H ~ 2 of 0.67 ± 0.08SD if 30% randomized. Assuming no heterotypic crosses, the heritability of the defoliation percentage before November 18, 1988 was 0.33 ± 0.08, whereas H 2 was 0.49 ± 0.08 based on data collected on November 14, 1989. If 30% of the random mating , November 18, 1988 The heritability H0 of the current leaf percentage is 0.47 ± 0.08, based on data collected on November 14, 1989. H ~ 2 was 0.05 ± 0.08. The phenotypic correlation between the percentages of full-flowering and November deciduous was 0.21 (0.18) (0.18)> 0.21> 0.26t (0.05). Obviously, genetic identification of these traits can be performed relatively easily. In order to prevent the occurrence of frost damage, thereby eliminating the sensitivity of the genus Cystospora and other related pathogenic microorganisms.