Difference of Genetic Effects due to QTL between Reciprocal Crosses in Transgenic Cotton

棉花学报 Cotton Science 2007，19(3)：194-198

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Difference of Genetic Effects due to QTL between Reciprocal Crosses in Transgenic Cotton
WANG Zhi-wei^{1 2}，WANG Qing-lian^2*，ZHANG Yong-shan³(1. He′nan Institute of Science and Technology，Xinxiang，He′nan 453003；2. College of Life Science， He′nan Normal University，Xinxiang，He′nan，453003；3. Cotton Research Institute，CAAS，Key Laboratory of Cotton Genetic Improvement，Ministry of Agriculture，Anyang，He′nan 455000，China )

Abstract：Comparative analysis on the genetic effects for main traits were prosecuted on the modified AD model in transgenic cotton QTL mutant，the results showed that the obverse crosses agreed with the inverse cross on most genetic effects for the agronomic traits. All agronomic traits except boll weight had no additive effects due to genetic background. Significant or extremely significant additive and dominance effects were detected for seed cotton yield，lint yield，lint percentage and boll number attributed to dQTL(disrupted QTL by alien gene). Significant or extremely significant additive and dominance effects due to genetic background existed in most agronomic traits. Detail dissection of additive effects attributed to dQTL were proceed in transgenic mutant，recipient and top-crossed lines ，and the predicted effects in obverse cross agreed with those in reverse cross. Homozygous dominance effects and heterozygous dominant effects were also compared between obverse cross and cross.
Key words：cotton；modified Additive-Dominance model；additive effects；dominance effects；reciprocal cross；QTL [Full Text，2104KB]