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Effects of Recurrent Seed Irradiation on Genetic Variability and Recombination in Cotton ( Gossypium hirsutum L.) 1
Author(s) -
Fotiadis N. A.,
Miller P. A.
Publication year - 1973
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1973.0011183x001300010013x
Subject(s) - gossypium hirsutum , biology , gossypium , population , fiber crop , malvaceae , selection (genetic algorithm) , agronomy , recombination , horticulture , genetics , gene , demography , artificial intelligence , sociology , computer science
The effect of five cycles of seed irradiation with 10 kr of γ‐rays per cycle on the means, variances, and covariances of a synthetic variety of cotton ( Gossypium hirsutum L.) was studied. Means were lower after the treatment for the traits previously selected for high values and were higher for the traits previously selected for low values. Means of traits previously selected for intermediate values remained unaffected. Variances were generally but moderately increased. The effect on correlations between traits was rather small. Expected gains from selection were higher in the treated population, but the increased gain could hardly, if at all, compensate for the lower means of that population. The changes effected by the treatment are deemed rather small. The reason is thought to be the low doses of radiation used.