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THE EFFECT OF HONEYCOMB SELECTION ON GRAIN YIELD OF SORGHUM | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 40, Issue 1, 2009, Pages 26-37 | ||
| Authors | ||
| Medhat M. Elsahookie; Francis O. Janno | ||
| Abstract | ||
| To investigate the effect of honeycomb selection in improving crop grain yield , field trials were undertaken for four seasons on the farm of Dept. of Field Crops, Coll. of Agric./Univ. of Baghdad during 2005-2007. The sorghum (Sorghum bicolor Moench) Lilu cv. was used. Seeds were planted in the first three seasons using honeycomb design of 1.3 m between furrows and 1.5 m between plants. Parameters used for selection was, head weight. The resulted seeds were planted for yield trial along with original populations. Plant leaf area of selected plants was increased from 0.54 to 0.59 m² under planting population of 60.ooo p/ha. This increase was reflected on plant dry matter that increased from 377 to 402g, growth rate from 3.13 to 3.26 g/plant/d, and kernel/head from3633 to 4250. this implies that system capacity constant (SCC) was significantly improved. This selected population yielded 9.0 t/ha compared to 6.94 t/ha of the original poplation when planted at 100.000 p/ha.Value of heritability for trait used was 65.8% for head weight after 2 cycles of selection. It was clear that additive gene action has improved SCC of selected plants. It was recommended to use honeycomb method to develop cultivars of high vigour better than those developed by conventional selection. | ||
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