Allam,, M. (2003). GENETIC BEHAVIOR OF SOME ECONOMIC CHARACTERS IN A HYBRID BElWEEN TWO GENOTYPES OF EXT~A. LONG COrTON. Journal of Plant Production, 28(2), 811-818. doi: 10.21608/jpp.2003.242247
M. A. M. Allam,. "GENETIC BEHAVIOR OF SOME ECONOMIC CHARACTERS IN A HYBRID BElWEEN TWO GENOTYPES OF EXT~A. LONG COrTON". Journal of Plant Production, 28, 2, 2003, 811-818. doi: 10.21608/jpp.2003.242247
Allam,, M. (2003). 'GENETIC BEHAVIOR OF SOME ECONOMIC CHARACTERS IN A HYBRID BElWEEN TWO GENOTYPES OF EXT~A. LONG COrTON', Journal of Plant Production, 28(2), pp. 811-818. doi: 10.21608/jpp.2003.242247
Allam,, M. GENETIC BEHAVIOR OF SOME ECONOMIC CHARACTERS IN A HYBRID BElWEEN TWO GENOTYPES OF EXT~A. LONG COrTON. Journal of Plant Production, 2003; 28(2): 811-818. doi: 10.21608/jpp.2003.242247
GENETIC BEHAVIOR OF SOME ECONOMIC CHARACTERS IN A HYBRID BElWEEN TWO GENOTYPES OF EXT~A. LONG COrTON
Cotton Research Institute, Agricultural Research Center, Giza.
Abstract
This experiment was conducted at the Experimental Farm, Sakha Agricultural Research Station during the successws growing seasons of 1998,1999 and 2000. Two extra tong strains namely (Giza 84 X F. 108) and {Giza 45 X (Giza 45 X Giza 84)]. The genetical parameters of some economic characters were computed. The potence ratio estimutes indicated over dominance for seed cotton and lint yield per plant, boll weight, seed index and node number of the first fruiting branch. While, lint percent, lint index and days to first flower showed partial potence ralios.
Highly significant positive heterotic effect relative to mid-parent and better- parent was. computed for seed cotton yield and lint yield while significant negative heterotic effect relative mid-parent and better-parent was computed for lint percentage and lint index.
The inbreeding depression effect was highly significant for seed cotton yield, lint yield •. and significant negative for lint percentage and lint inoex.
HIghly significant values of additive and dominance were found for seed and linl cotton yield With grealer magnitude for dominance than additive effect. Highly significant positive value of the epistatic effect (additive X additive) was found for seed cotton yield and lint yield per plant. A significant negative value of epistatic effect (additive X dominance) was found (or seed cotton yield. Meanwhile, highly significant negative values of epistatic effect (dominance X dominance) was showed for seed cotton yield and lint yield. Moderate hertablities was calculal.ed for seed cotton yield and, lint yield. Low values of hertablities for other trails.
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