GENETIC ANALYSES FOR SOME CHARACTERISTICS IN DURUM WHEAT (Triticum durum Desf.)

Yalçın COŞKUN; İrfan ÖZBERK; Ayşe COŞKUN

Article Details

GENETIC ANALYSES FOR SOME CHARACTERISTICS IN DURUM WHEAT (Triticum durum Desf.)

Authors:

Yalçın COŞKUN | İrfan ÖZBERK | Ayşe COŞKUN

Publisher:

Harran University

Main Topics:

Food technology

Journal:

Harran Journal of Agricultural and Food Science 2010 Vol.14 Issue 1, pp.17-25

Document Type:

Article

Publication Date:

2/2014

Document Language:

English

Document ID (Org No.):

2000464808

Frequency:

Quarterly

eISSN:

2587-1358

Abstract:

 


This study aimed to assess and use of some genetics factors such as additive, dominance and non allelic interactions affecting generation means and variances for some quantitative characteristics of basic generations [P1, P2, F1 (2 family), F2 (4 family), B1 (4 family) and B2 (4 family)] derived from the cross between Ozberk and Firat-93 cultivars of Triticum durum. Except canopy temperature and SDS sedimentation value, simple additive dominance model (m, [d], [h]) was not found to be adequate to describe generation means indicating the presence of non allelic interactions. Parameters for means of generations obtained from biometrical equations were found to be overlapping partially those of computer software (MEAN FIT). H (dominance) and E (environmental) variations turned out to be significant frequency. Variance components obtained from biometrical equations and computer software (VAR FIT) overlapped. Utilizing from variance components of best fit, h2 n for number of grain spike-1 was only estimated as 18.26 %. The h2 b values were found to be less than 50 % for both estimation methods (formulas and computer software). It was concluded that the similarity of parents for the characteristics under study, limited number of sampling, the presence of micro environmental variations resulted in absence of genuine genetic variations or the presence of some undetected genetic parameters depending on inadequacy of basic generations. Taking into account the presence of epistasis nearly for all characteristics, delay selection is recommended

.

 


This study aimed to assess and use of some genetics factors such as additive, dominance and non allelic interactions affecting generation means and variances for some quantitative characteristics of basic generations [P1, P2, F1 (2 family), F2 (4 family), B1 (4 family) and B2 (4 family)] derived from the cross between Ozberk and Firat-93 cultivars of Triticum durum. Except canopy temperature and SDS sedimentation value, simple additive dominance model (m, [d], [h]) was not found to be adequate to describe generation means indicating the presence of non allelic interactions. Parameters for means of generations obtained from biometrical equations were found to be overlapping partially those of computer software (MEAN FIT). H (dominance) and E (environmental) variations turned out to be significant frequency. Variance components obtained from biometrical equations and computer software (VAR FIT) overlapped. Utilizing from variance components of best fit, h2 n for number of grain spike-1 was only estimated as 18.26 %. The h2 b values were found to be less than 50 % for both estimation methods (formulas and computer software). It was concluded that the similarity of parents for the characteristics under study, limited number of sampling, the presence of micro environmental variations resulted in absence of genuine genetic variations or the presence of some undetected genetic parameters depending on inadequacy of basic generations. Taking into account the presence of epistasis nearly for all characteristics, delay selection is recommended.

.

Article Details

GENETIC ANALYSES FOR SOME CHARACTERISTICS IN DURUM WHEAT (Triticum durum Desf.)

Authors: Yalçın COŞKUN | İrfan ÖZBERK | Ayşe COŞKUN

Publisher: Harran University

Main Topics: Food technology

Journal: Harran Journal of Agricultural and Food Science 2010 Vol.14 Issue 1, pp.17-25

Document Type: Article

Publication Date: 2/2014

Document Language: English

Document ID (Org No.): 2000464808

Frequency: Quarterly

eISSN: 2587-1358

Issues

Authors:

Yalçın COŞKUN | İrfan ÖZBERK | Ayşe COŞKUN

Publisher:

Harran University

Main Topics:

Food technology

Journal:

Harran Journal of Agricultural and Food Science 2010 Vol.14 Issue 1, pp.17-25

Document Type:

Article

Publication Date:

2/2014

Document Language:

English

Document ID (Org No.):

2000464808

Frequency:

Quarterly

eISSN:

2587-1358