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Comparison Of Two Selection Methods For Yield In Two Grain Sorghum Populations (Sorghum Bicolor (L.) Moench
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Abstract: The present study was carried out at Shandaweel Agric. Res. Station, Sohag, Egypt during 2004, 2005 and 2006 summer seasons. The breeding material used in this study were F4, F5 and F6 generations from two crosses, i.e., Dorado × ICSV-273 ( pop.1) and Dorado × GD-47820 (pop .Π ).The objectives were to compare the efficiency of pedigree selection method and Independent culling levels in improving grain yield/ plant and correlated traits. Highly significant differences among F4 families and satisfactory genotypic coefficient of variability and large magnitude of broad sense heritability were obtained for all studied traits. In two base populations, grain yield/plant showed positive correlations with all studied traits except days to 50% flowering.
The results indicated that the genetic coefficient of variability of grain yield/plant in pop.-І and pop.-Π decreased greatly from 19.51 and 37.14% (F4) to the second cycle (F6) either for pedigree selection (17.20 and 10.88%) or independent culling levels procedures (8.28 and 7.79%), respectively. Two cycles of pedigree selection increased grain yield/plant by 16.22 and 14.51 % from the bulk sample compared to 15.30 and 14.42 % for Independent culling levels in pop. І and Π, respectively.
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| Publication year |
2007
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| Pages |
421-433
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| Availability location |
مركز البحوث الزراعية- ش الجامعه - الجيزة
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| Availability number |
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| Organization Name |
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| serial title |
Egypt. J. Appl. Sci
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| Author(s) from ARC |
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AGROVOC
TERMS |
Fibre crops.
Sorghum.
Sorghum bicolor.
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| Publication Type |
Journal
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