ESTIMATION OF HETEROSIS AND SOME GENETIC PARAMETERS USING FACTORIAL CROSSING IN THE PRESENCE OF MAGNETIZATION SEEDS

	ESTIMATION OF HETEROSIS AND SOME GENETIC PARAMETERS USING FACTORIAL CROSSING IN THE PRESENCE OF MAGNETIZATION SEEDS
journal of kerbala university
Article 1, Volume 13, Issue 4, 2017, Pages 116-128 PDF (0 K)
Abstract
The experiment was Carriedout in the field of AL- Musayyib project are a field for the season spring , autumn 2015 and autumn 2016 introduced eight inbred during the seasons of spring and autumn of 2015 and autumn of 2016 using eight inbred lines of maile within the proposed factorial crossing program suggested by Comstock and Robinson for the production F1 , and considered four lines as males and four lines of females and crossing between them in season spring 2015, and in autumn 2015 , 2016 season the seeds divided into two parts the first offered the seeds to the magnetization process and other part without the magnetization has been cultivated for their measurement of heterosis and some genetic parameters of the traits yield and components yield. The results showed that there were high significant differences between the magnetization and between genotypes, gave of parent (6) best averages of the traits studied was reached 89.33 for the yield plant, while the parent has given (1) the lowest averages for two seasons with the magnetization , in without show of parent (5) best averages for number of grain in row and the number of rows ear and weight of 300 grain was above 50.00 for prescription weight of 300 grain and perant (6) for yield plant and total yield for two seasons, while gave perant (8 ) the lowest averages for all traits except weight of 300 grain and total yield gave parent (2) the lowest averages for two seasons , and the hybrids (2 × 6) and (2 × 7) giving them the best averages while giving the hybrids (1 × 5) and (1 × 7) and (1 × 8) the lowest averages with and without the magnetization , and gave hybrid vigor are all positive hybrid reached 188.17 % of a hybrid (2 × 7) for yield the plant with the magnetization , while without gave the hybrids positive hybrid vigor for recipes all except the number of rows ear showed negative values were reached the value of positive 186.97.% of a hybrid (2 × 7) for total yield and reached the highest negative hybrid force -18.08% in hybrid (1 × 5) , and it was genetic variance is greater than the environmental variance to all the traits, which is reflected in the rate of heritability in the broad sense, which was within the upper limits amounted to 99.86% for yield plant, and it was Additive genetic variance is greater than Dominance genetic variance in all traits except weight of 300 grain, which is reflected in the rate of heritability in the narrow sense as she was within the upper limits of all the traits except weight of 300 grain were within the medium-border highest percentage 68.86% for number of grains in row, and that the degree of dominance rate was less than one number of grain in row for two seasons and the number of rows ear and yield plant and total yield for one season and is greater than one for weight of 300 grain for two seasons and other of the traits for one season with the magnetization, while without of heritability in the broad sense, which was within the upper limits amounted 99.51% for yield plant, and it was Additive genetic variance is greater than Dominance genetic variance in the number of rows ear and yield plant and total yield and smaller variation dominance of a number of grain in row and weight of 300 grain, which reflected in the rate of heritability in the narrow sense as she was within the upper limits of all the traits except number grain in row and weight of 300 grain were within the medium-border highest percentage 72.59%% for number of rows ear, and that the degree of dominance rate was less than one number of rows ear for two seasons and greater than one for the other of the traits of the two seasons ,we recommend taking advantage of a hybrids (2 × 6) and (2 × 7) and next breeding programs.

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