HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Van Sanford, D. A. Articles by Matzinger, D. F. Search for Related Content PubMed Articles by Van Sanford, D. A. Articles by Matzinger, D. F. Agricola Articles by Van Sanford, D. A. Articles by Matzinger, D. F.

Mass Selection for Tobacco Seedling Weight under Two Nutrient Regimes¹

Selection for increased weight of Nicotiana tabacum L. seedlings was conducted for 10 generations of recurrent mass selection in optimal and stress nutrient environments. Following the last cycle of selection, all cycles were evaluated on the nutrient level on which they were selected as well as on the alternate level. Selection response for both nutrient levels was significant when evaluated on either level; however, the responses were less than those predicted from estimates of genetic parameters in the base population. Maximum gains were obtained from selection on the optimum nutrient level whether final evaluation was made on either the optimum or stress level. Selection for increased seedling weight led to a correlated response of earlier germination. Only slight changes were obtained for a correlated change in root length, reflecting the compensation of genetic and maternal correlations of opposite sign.

Key Words: Recurrent selection • Genotype x environment interaction • Correlated response • Maternal inheritance

² Former graduate student (now assistant professor of agronomy, Univ. of Kentucky)and professor of genetics, North Carolina State Univ., Raleigh, NC 27650.

Received for publication February 28, 1983.