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Effects of recurrent selection on populations of various generations in wheat by using the Tai Gu single dominant male-sterile gene

Published online by Cambridge University Press:  27 March 2009

X. W. Wang ,
J. R. Lap ,
L Fan  and
R. B. Zhang
X. W. Wang
Affiliation:
College of Plant Science and Technology, National Agricultural University of China, Beijing 100094, PR China
J. R. Lap
Affiliation:
Institute of Industrial & Wheat Crops, Henan Academy of Agricultural Sciences, Zhengzhou 450002, PR China
L Fan
Affiliation:
Department of Agronomy, Henan Agricultural University, Zhengzhou 450002, PR China
R. B. Zhang
Affiliation:
Department of Agronomy, Henan Agricultural University, Zhengzhou 450002, PR China
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Summary

Mass selection (MS) and bulk selection of a single character (CS) were used for the improvement of a base population, Bl, which was composed of Tai Gu male-sterile progenies of ten high protein content and four high yielding parental lines of wheat (Triticum aestivum L.), transferred by 6–10 backcrossing generations, with equal numbers of plants from each line. Backcross mass selection (BS) was used for the improvement of a second base population, B2, which was formed by Tai Gu malesterile plants of four high yielding parental lines, again with equal numbers of plants from each line. Three cycles of selection were conducted for both population Bl and B2. Direct genetic advances of sterile plants for six traits were studied. The results indicated that use of the Tai Gu male-sterile single dominant gene is effective for recurrent selection of wheat. For improvement of a single character, CS was the most effective method, of which the selective effect in the first cycle (Cl) was greater than in the second (C2) and the third cycle (C3), although multivariate analysis snowed that the CS method was not conducive to the maintenance of variation in a population. The greatest response to selection was found in C2 with the MS method. Multivariate analysis also indicated that both the MS and BS methods increased the variation in the population, but MS was found to be the best selective method as judged by the mean response over three cycles of selection.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 126 , Issue 4 , June 1996 , pp. 397 - 402
Copyright
Copyright © Cambridge University Press 1996

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References

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