Inheritance of grain yield and its components in durum wheat (Triticum durum Desf.)

	Inheritance of grain yield and its components in durum wheat (Triticum durum Desf.)
journal of kerbala university
Article 1, Volume 6, Issue 4, 2010, Pages 52-60 PDF (0 K)
Abstract
Seven durum wheat genotypes (Triticum durum Desf.) were used in this study , The source of six of them were the International Center for Agricultural Research in the Dry Areas (ICARDA) , in addition to the local variety (Om-Rabee) . The grains of the seven parents and their which number (21) crossed in half-diallel were grown in field at from Neinava governorate using Randomized Complete Block Design with three replications . The characters were studied : plant height , number of spikes/plant , spike length , number of grains/spike, grain yield/plant , 1000-grain weight. The results of ( - ) Analysis of Variance for Array no significant for all characters which refers to achievement the last three hypothesis by Ferreira . Jinks & Hayman analysis revealed that dominant variance values were high than the additive ones for all the characters . The average degree of dominance was greater than one for all the characters indicating the presence of over-dominance. Gene frequency was over than 0.25 for all the characters indicating equal distribution of dominant and recessive alleles between parents. The ratio of KD/KR was greater than one which revealed that the parents have an excess of dominant alleles for all the characters except for number of grains/spike and . Narrow sense heritability values were high for the plant height , and number of spikes /plant and medium for the spike length , 1000-grain weight and grain yield/plant , and low for the number of spikes/plant character.

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