title: [Research on morphological genetic marker of honeybee (Apis melli fera ligustica) in royal jelly production performance].
abstract: The lengths of hypopharyngeal glands (HG) from the left and right side were determined in 19 workers of honeybee(Apis mellifera ligustica). There were no significant differences (P<0.05) in length between the left and the right in one worker's hypopharyngeal gland. Three hundred and thirty workers were collected from eleven colonies of "ZND No.1" Italian honeybee(Apis mellifera ligustica) respectively. Head weight, body weight, ratio between head weight and body weight,bursa number and length of hypopharyngeal gland(HG)were tested in these samples. Royal jelly productions were determined during the flowing period of rape and Chinese milk retch from March 30 to April 26 in Chun'an County of Zhejiang Province in 2001. The correlation analysis between royal jelly production and head weight, ratio between head weight and body weight, bursa number of HG,and length of HG were conducted. The correlation coefficient between royal jelly production and length of HG was the largest. The correlation coefficient between royal jelly production and bursa number was the second. It was suggested that the length of HG could be used as one of genetic markers for the production performance of royal jelly.
authors.affiliation: Department of Special Economic Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou 310029 China. susongkun@zju.edu.cn
authors.forename: Song-Kun
authors.initials: SK
authors.lastname: Su
authors.forename: Sheng-Lu
authors.initials: SL
authors.lastname: Chen