YIELDING ABILITY AND COMPETITION OF WHEAT VARIETAL MIXTURES AND THEIR COUNTERPARTS IN PURE STAND
SAAD, F., GOMAA, A., IBRAHIM, A., SALLAM, A. (1996). YIELDING ABILITY AND COMPETITION OF WHEAT VARIETAL MIXTURES AND THEIR COUNTERPARTS IN PURE STAND. EKB Journal Management System, 74(3), 701-720. doi: 10.21608/ejar.1996.429084
FAWZY F. SAAD; ABDEL-SALAM A. GOMAA; ABDALLA F. IBRAHIM; AMANY M. SALLAM. "YIELDING ABILITY AND COMPETITION OF WHEAT VARIETAL MIXTURES AND THEIR COUNTERPARTS IN PURE STAND". EKB Journal Management System, 74, 3, 1996, 701-720. doi: 10.21608/ejar.1996.429084
SAAD, F., GOMAA, A., IBRAHIM, A., SALLAM, A. (1996). 'YIELDING ABILITY AND COMPETITION OF WHEAT VARIETAL MIXTURES AND THEIR COUNTERPARTS IN PURE STAND', EKB Journal Management System, 74(3), pp. 701-720. doi: 10.21608/ejar.1996.429084
SAAD, F., GOMAA, A., IBRAHIM, A., SALLAM, A. YIELDING ABILITY AND COMPETITION OF WHEAT VARIETAL MIXTURES AND THEIR COUNTERPARTS IN PURE STAND. EKB Journal Management System, 1996; 74(3): 701-720. doi: 10.21608/ejar.1996.429084

YIELDING ABILITY AND COMPETITION OF WHEAT VARIETAL MIXTURES AND THEIR COUNTERPARTS IN PURE STAND

Egyptian Journal of Agricultural Research
Article 9, Volume 74, Issue 3, September 1996, Page 701-720  XML PDF (4.35 MB)
Document Type: Original Article
DOI: 10.21608/ejar.1996.429084
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Authors
FAWZY F. SAAD1; ABDEL-SALAM A. GOMAA2; ABDALLA F. IBRAHIM1; AMANY M. SALLAM2
1Department of Agronomy, Faculty of Agriculture, Cairo University, Giza, Egypt
2Agricultural Research Center, Ministry of Agriculture, Giza, Egypt
Abstract
No research on varietal blends of wheat in Egypt has been pub­lished. The purpose of this study was to determine if blends of wheat cultivars would be more productive than pure stands when grown under Egyptian conditions. Also, this study aims to evaluate the competitive ability of Egyptian wheat varieties. All of the 15 possible two-cultivar mixures of six wheat (Triticum aestivum L.) varieties and their counter­parts were evaluated for yielding ability and competitive effect in two seasons 1992/93 and 1993/94. Four 2-cultivar blends averaged more than 20% for grain yield per acre of the mean of their components and 13.7% over the highest yielding component. The best combination was Sakha 61 to Sakha 69 since each one of its components had the highest competitive ability, 41 % and 30% for grain yield respectively. Also, Sak­ha 61 and Giza 157 had high positive competitive ability. The effect of competitive ability on grain yield is important and has implications for the breeder, who can use cultivars with high compet­itive ability as components of varietal blends . Competition effects for yield appeared to be associated with number of spikelets per spike and number of kernels per spike. The mean competitive effect (U') was gen­erally small in comparison to the mean genetic effect (u). However, the highest relative competitive effect for grain yield was 36.8% for the mix­ture of Sakha 61 : Giza 157.
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