prediction of superior crosses before their being performed, and an evaluation of the progeny in the field can lead to an increase in the efficiency of hybrid-seed production. a significant number of studies, during recent decades, have proved a positive relationship between heterosis and the genetic distance evaluated through molecular markers. ssr markers were employed to study the relationsh...

M.B. Ferguson and B.A. McGregor PIRVic (Primary Industries Research Victoria), Department of Primary Industries, Private Bag 105, Hamilton, Victoria 3300, Australia PIRVic (Primary Industries Research Victoria) Department of Primary Industries, 475 Mickleham Rd, Attwood, Victoria 3049, Australia ________________________________________________________________________________ Abstract Genetic im...

Gilt progeny have lighter weaning weights and greater postweaning medication and mortality rates compared with the progeny of older parity sows. Because weaning weight has been positively correlated with postweaning survival, this study aimed to determine whether the provision of supplemental milk preweaning could improve weaning weight and subsequent weights as well as postweaning survival of ...

Radon progeny concentration is measured with a total alpha counting system in 185 dwellings in the town of Thessaloniki. The Equilibrium Equivalent radon Concentration (EEC Rn) follows a lognormal distribution with an arithmetic and geometric mean value of 28 Bq/m and 16 Bq/m respectively. Simultaneous in situ alpha and gamma spectroscopy measurements were performed in 60 schools of Thessalonik...

Radon is the most important source of natural radiation to human beings and second major causative agent lung cancer other than smoking. In recent years, hazards exposure thoron (Rn-220), another isotope radon, its progeny have gained consensus. To accurately evaluate dose level Rn-220 progeny, a standard chamber with strong regulation ability for needs be established scale or calibration measu...

Various studies have validated that genetic divergence in dairy cattle translates to phenotypic differences; nonetheless, many consider the breeding goal, or associated traits, generally been small scale, often undertaken controlled environments, and they lack consideration for entire suite of traits included goal. Therefore, objective present study was fill this void, doing so, provide produce...

INTRODUCTION UNSCEAR (1) reported that the effective doses due to inhalation of radon (Rn) and its progeny account on average for about one-half of all natural sources of radiation. In recent years, indoor surveys in Europe and Asia revealed that the dose contribution from thoron (Rn) and its progeny can equal to or even exceed that of Rn and its progeny (2). For assessment the public exposure ...

THOUGH budding and grafting have been long used by horticulturists a a means of reproducing genetically complex or sterile clones superior for their fruit or ornamental value, little consideration has been given to these techniques by foresters as a means of improving the unit value of forest stands. Forest geneticists in Denmark and Sweden have, however, sensed the practical value of these tec...