GENETIC VARIATION OF SOME TRAITS OF SORGHUM UNDER POPULATION DENSITIES 2- YIELD AND YIELD COMPONENTS | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 44, Issue 4, August 2013, Pages 447-454 | ||
| Authors | ||
| M. M. Elsahookie; H.A. Al-Khazaali; F. Y. Baktash | ||
| Abstract | ||
| To estimate the extent of genetic variability of some sorghum characters under different plant population, a field experiment was carried out at the experimental field of Dept. of Field Crop science, Coll. of Agric. Univ. of Baghdad during fall 2011 and Spring 2012 using three different populations 71.4, 95.2, and 143 thousands plants per ha.. The cultivars were Lelo improved and original. The experiments were factorial laid out in completely randomized block design with four replicates. Several traits were studied in terms of plants’ performance and variations aspects, observations were recorded on ten plants in each treatment. The values of genetic, environmental variance, genetic and phenotypic coefficient variation, stability and the heritability of sorghum were calculated .The highest genetic variation environmental variation were 43.0 and 25.32for grains' yield, and number of grains per area respectively, while the lowest rates were 3.34 and 7.85 for panicle length and grain’ weight correspondingly. The highest heritability was for grains’ yield and grain' weight (both were 98%) while, the lowest was for panicle length 77%. The highest phenotypic stability was 96% for grain's weight given by the improved cultivar during fall season. The population density has significantly affected the entire studied traits in both seasons, the improved cultivar was superior in the whole traits under study, there was a significant interaction cultivars X population in fall season for the traits of grains' yield and number of grains per area, while the traits of panicle length and grains weight were non significant. We conclude that most of yield components traits are affecting more by the genetic factors apart from panicle length; therefore we recommend considering number and weight of grains as a criteria in measuring grains' production ability of sorghum. | ||
| Keywords | ||
| heritability; Crop Growth Rate; leaf Area Index; SCC | ||
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