GENETIC ANALYSIS OF NACL SALINITY TOLERANCE OF RAPESEED (BRASSICA NAPUS L.) AT GERMINATION STAGE

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ALIZADEH B.; VALIZADEH M.; MOGHADAM MOHAMMAD; GHASEMI GOLEZANI K.; AHMADI M.R.

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Journal: Journal of Agricultural Sciences and Natural Resources Year:2005 | Volume:11 | Issue:4 Page(s): 47-58

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Title

GENETIC ANALYSIS OF NACL SALINITY TOLERANCE OF RAPESEED (BRASSICA NAPUS L.) AT GERMINATION STAGE

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Keywords

FRDIALLELQ4

GENETIC ANALYSISQ4

GERMINATIONQ3

RAPESEEDQ4

SALT TOLERANCEQ3

Abstract

The genetic basis of relative salinity tolerance was assessed at GERMINATION stage of RAPESEED (Brassica napus L.) cultivars at 0, 100, and 200 mM NaCI salinity, using a 6 parent F2-diallel. The parents were chosen from a larger sample of 20 varieties to reflect the range of tolerance. Analysis of variance for each salinity level showed high significant genotypic differences for coefficient of velocity of GERMINATION (CVG) and GERMINATION index (GI) at control and for CVG, GI and GERMINATION rate index (GRI) at 100 mML-1 NaCl salinity level. At 200 mML-1NaCI, no significant differences obtained among genotypes. At 100 mML-1NaCI, both additive and non-additive effects were significant with the prevalence of dominance gene action over additive effects. Tolerance was controlled by recessive genes in all traits examined. The estimated broad sense heritabilities were high, while narrow sense heritability estimates were low, indicating relatively high dominance gene effects. Analysis of combining abilities showed that both GCA and SCA effects were important in genetic control of GERMINATION parameters at control treatment and SCA effects at 100 mM NaCI salinity. Since tolerance was governed by recessive genes, the tolerant parent was one of the poorest specific combiners. Heterotic combinations in some crosses and the existence of significant dominance effects suggested the potential of hybrid RAPESEED breeding for soils with salinity problem.

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APA: Copy

ALIZADEH, B., VALIZADEH, M., MOGHADAM, MOHAMMAD, GHASEMI GOLEZANI, K., & AHMADI, M.R.. (2005). GENETIC ANALYSIS OF NACL SALINITY TOLERANCE OF RAPESEED (BRASSICA NAPUS L.) AT GERMINATION STAGE. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 11(4), 47-58. SID. https://sid.ir/paper/8987/en

Vancouver: Copy

ALIZADEH B., VALIZADEH M., MOGHADAM MOHAMMAD, GHASEMI GOLEZANI K., AHMADI M.R.. GENETIC ANALYSIS OF NACL SALINITY TOLERANCE OF RAPESEED (BRASSICA NAPUS L.) AT GERMINATION STAGE. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2005;11(4):47-58. Available from: https://sid.ir/paper/8987/en

IEEE: Copy

B. ALIZADEH, M. VALIZADEH, MOHAMMAD MOGHADAM, K. GHASEMI GOLEZANI, and M.R. AHMADI, “GENETIC ANALYSIS OF NACL SALINITY TOLERANCE OF RAPESEED (BRASSICA NAPUS L.) AT GERMINATION STAGE,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 11, no. 4, pp. 47–58, 2005, [Online]. Available: https://sid.ir/paper/8987/en

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