title: [Influence of infusion of Duroc blood on characteristics of chromosomes in Gansu black pig].
abstract: The variation of chromosomes of Gansu Black pig was caused by infusion of Duroc blood. The chromosome length ratios of No.1,6,7,13 chromosomes in the line I of Gansu Black pig were higher than those in the line II. It showed that the homogeneity in line I was higher than in line II. The number of Ag-staining nucleolus organizers (Ag-NOR) was between 1-4 in the line I and II, the average No. of Ag-NOR was different obviously between the line I and the line II. This indicated that the activity of translation in rRNA in the line I was different in the line II.
authors.affiliation: Beijing Breeding Swine Centre, Beijing 100085, China.
authors.forename: Cai-Hong
authors.initials: CH
authors.lastname: Wei
authors.forename: Chou-Sheng
authors.initials: CS
authors.lastname: Liu
authors.forename: Xing-Bo
authors.initials: XB
authors.lastname: Zhao