Stability Parameters For Yield and Some of It's Components in Upland Cotton (Gossypium hirsutum L.) | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 16, Issue 3, September 2016, Pages 28-39 | ||
| Authors | ||
| K. M. D. Al-Zubaidy; A. R. A. Al-Jumaily; M. I. M. M. Al-Ugadi; Y. H. S. Al-Aaty | ||
| Abstract | ||
| Genotypes of upland cotton IK8, S29, S118, Coker 310, Curds 26, Condor, Deer 22 and Aleppo 33 were planted in the farm guidance for the development of cotton cultivation in Sharqat, the elimination of the Agriculture Department of Salah al-Din during the growing seasons 2013 and 2014 at the distances cultivation between plants 15, 20, 25 and 30 cm between plants (their combinations represent eight different environments) by using a randomized complete design with three replications, in order to evaluate it's stability for characters: number of days to first boll opening, plant height, number fruiting branches, number bolls per plant, boll weight and seed cotton yield per plant. Combined analysis of variance results showed that the mean square of each of the environments, genotypes and that related to the interaction genotypes x environments was significant for all characters expected number bolls per plant seed cotton yield per plant was not significant. The variations related to the environments was much greater than those of each of the genotypes and interaction for all characters. The broad sense heritability appeared high for number of days to first boll opening and number of fruiting branches per plant, moderate for plant height and low for the rest of characters. Results of stability parameters showed that genotype S29 was high stable for four characters (number of days to first boll opening, number of fruiting branches per plant, number of bolls per plant and seed cotton yield per plant), and showed a high response in good environments only for number of bolls per plant and boll weight, followed by the genotype Ik378 which showed high stability for three characters (number of fruiting branches, number of bolls per plant and boll weight) and its response was high seed cotton yield only in good environments, and these findings offer the possibility to benefit from genotypes of high stability in future breeding programs by hybridization to create new varieties characterized by good productivity and quality characters and stable in a wide range of environmental changes, in addition to the possibility of extend grow at a wide range of environmental conditions. | ||
| Keywords | ||
| genotype; Interaction genotype; Heritability; stability | ||
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