PEDIGREE SELECTION FOR EARLINESS, SPIKES NUMBER AND GRAIN WEIGHT IN TWO SEGREGATING POPULATIONS OF BARLEY (Hordium vulgare L.) | ||||
| Journal of Plant Production | ||||
| Article 1, Volume 28, Issue 9, September 2003, Page 6539-6551 PDF (1.01 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2003.252703 | ||||
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| Author | ||||
| E. H. El-Seidy, | ||||
| Agronomy Dept., Faculty of Agriculture, Tanta University, Tanta | ||||
| Abstract | ||||
| Two cycles of pedigree selection were applied to the F3 generation of two barley crosses. The objective of this investigation was to improve grain weight, spikes number/plant and days to heading using the pedigree selection. Highly significant differences among the F3 families and sufficient genotypic coefficient of variability were detected for days to heading, spike length, number of spikes/plant, number of kernels/spike, 1000- kernel weight and grain weight/plant in both populations. Broad sense heritabilities were high for days to heading and moderate for number of spikes/plant and grain weight of both populations. Heritability and predicted genetic gain upon selection decreased from F3 to F5 generation for the three selection criteria of both populations. The realized gains showed that days to heading was earlier by 4.16% in the first population and 2.76 % in the second one after two cycles compared to the bulk sample. Selection for more spikes/plant after two cycles increased the merit of selection by 10.88% in the first population and 5.07 % in the second population compared to the bulk of F3 families. Direct selection for grain weight /plant showed realized response to selection reached to 7.57% and 7.60% from the bulk sample and accounted 6.59 and 2.41% from the best parent in population 1 and 2 , respectively. Family No. 66 in the first population yielded 13.07 % more than the bulk and was earlier than it by 5.58 % and family No. 92 in the second population could be considered the best selected family which had 6.45% increase in grain weight and was earlier than the bulk sample by 5.88%. Pedigree selection was an efficient selection procedure for increasing the mean of the character under selection and affected the other related characters. | ||||
| Keywords | ||||
| Barley; Heritability; Predicted genetic advance-Realized gain | ||||
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