RESUMO
"In this paper the impacts of structural changes in local industries on interregional gross migration in Japan for 1974-85 are empirically examined. Structural changes in local industries, which are represented by a simple index of local employment growth dispersion across sectors, induce interregional migration, as well as intraregional migration. The estimation results with pooled data support this hypothesis. The impacts of structural changes in local industries are different across gross migration flows (rural-urban, urban-rural, urban-urban, and rural-rural migration), as are the impacts of other determinants of migration such as earnings differentials, aggregate employment growth, national unemployment, distance, and age structure."
Assuntos
Economia , Emprego , Indústrias , Dinâmica Populacional , Ásia , Demografia , Países Desenvolvidos , Emigração e Imigração , Ásia Oriental , Japão , PopulaçãoRESUMO
Plastid DNA (ptDNA) in albino rice plants regenerated from pollen by anther culture was investigated by Southern blotting. Of the 20 albino plants investigated, 7 contained ptDNA that had suffered large-scale deletion. The size and location of the deletions differed among the plants. In all cases about 30 kbp of the region containing the PstI-2 fragment (15.7 kbp) had been retained. The deleted ptDNA molecules were retained in calluses derived from the roots of each albino plant.
