PRODUCTION OF SEEDS OF F1 HYBRIDS OF TOBACCO (NICOTIANA TABACUM L.) RESISTANT TO TOBACCO DOWNY MILDEW (PERONOSPORA TABACINA ADAM)

Abstract

For a number of years, many tobacco-producing countries have been pursuing studies on a large scale concerning the production value of F1 variations of tobacco hybrids. Certain hybrids show clearly a heterozygous effect under certain conditions. As a result of catastrophic spreading of tobacco downy mildew (Peronospora tabacina Adam) in Europe, many countries started to cultivate varieties of tobacco which resist the disease. However, it takes a number of years (6-8) to obtain results of the cultivation, and the problem is particularly difficult because it is possible to obtain varieties which resist the tobacco downy mildew only by crossbreeding. These difficulties led tobacco growers to study the possibility of using for the cultivation of the first generation of (F1) hybrids to local varieties together with varieties which resist the tobacco downy mildew.

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Document Details

Document Type
Technical Report
Publication Date
Dec 22, 1964
Accession Number
AD0835276

Entities

People

  • Maria Bawolska
  • Z. Lis

Organizations

  • United States Army Biological Warfare Laboratories

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Castration
  • Computations
  • Fungi
  • Government (Foreign)
  • Literature
  • Plants
  • Pollination
  • Production
  • Productivity
  • Tobacco Plants
  • Ussr
  • Virginia

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  • Strategic Security Studies