Investigation of Frost Stress Tolerance in Some Promising Rapeseed Genotypes

Abstract Background and Objective:This study was conducted to evaluate freezing stress tolerance and identify tolerant genotypes among a number of rapeseed genotypes. Materials and Methods:The experiment was carried out in the form of split plots based on randomized complete blocks with three repl...

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Autores principales:	Akbar Abdollahi Hesar, Omid Sofalian, Bahram Alizadeh, Ali Asghari, Hassan Zali
Formato:	article
Lenguaje:	FA
Publicado:	University of Tabriz 2021
Materias:	keywords: canola frost stress grain yield tolerant genotypes tolerance indices Agriculture (General) S1-972 Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/48f6e66738f5492b83a21214632e7812
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spelling	oai:doaj.org-article:48f6e66738f5492b83a21214632e78122021-11-27T07:10:27ZInvestigation of Frost Stress Tolerance in Some Promising Rapeseed Genotypes2476-43102476-432910.22034/saps.2021.13109https://doaj.org/article/48f6e66738f5492b83a21214632e78122021-06-01T00:00:00Zhttps://sustainagriculture.tabrizu.ac.ir/article_13109_d6a9869e370b9e16ff682c22c6730fd5.pdfhttps://doaj.org/toc/2476-4310https://doaj.org/toc/2476-4329Abstract Background and Objective:This study was conducted to evaluate freezing stress tolerance and identify tolerant genotypes among a number of rapeseed genotypes. Materials and Methods:The experiment was carried out in the form of split plots based on randomized complete blocks with three replications in 1397 in a field with an area the 2000 square meters, in the form of autumn cultivation in the agricultural lands of Tikmehdash section of Bostanabad city. The main plot consisted of two dates of common cultivation (September 1) and delayed (September 16) and the sub-plot included 19 rapeseed genotypes. The mentioned genotypes are: SLM046, Opera, L963, Okapi, Nima, KH4, Talaya, L957, Ahmadi, KR18, L1009, Zarfam, Nafis, HW101, Licord, KS7, L14, SW101 and L1008. Results: The results of analysis of variance of yield per hectare under frost stress conditions showed that the effect of stress on the yield per hectare, it was significant at the level of 1% probability. The effect of genotype on plant height and yield per hectare was significant at the level of 1% probability and for 1000-seed weight at the level of 5% probability and was not significant for other traits. Genotype × planting date interaction was not significant in all traits. Also, the comparison of the mean of traits showed that Opera and HW101 genotypes had the highest value in plant height, 1000-seed weight and KS7 genotype in grain yield. Among the indices, MP, GMP, STI, HM and SNPI showed the highest correlation with grain yield under both stress and non-stress conditions and were introduced as the best indices to achieve high yielding and frost tolerant cultivars. Were. Based on the three-dimensional diagram, Opera, Licord, L1008 and Talaye genotypes were identified as the most ideal genotypes under frost stress conditions with above-average total yield under both stress and stress conditions as well as high SIIG values. Conclusion: The results showed that Opera genotype with the highest amount of SIIG was one of the most tolerant genotypes and Nima genotype with the lowest amount of SIIG was one of the most sensitive genotypes to frost stress. The results also showed that the highest grain yield (kg.ha-1) in non-stress conditions was observed in KS7 genotype and the lowest grain yield was observed in KR18 genotype. Under frost stress conditions, the highest grain yield belonged to Opera genotype and the lowest grain yield belonged to KR18 genotype.Akbar Abdollahi HesarOmid SofalianBahram AlizadehAli AsghariHassan ZaliUniversity of Tabrizarticlekeywords: canolafrost stressgrain yieldtolerant genotypestolerance indicesAgriculture (General)S1-972Plant cultureSB1-1110FAJournal of Agricultural Science and Sustainable Production, Vol 31, Iss 2, Pp 271-288 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	keywords: canola frost stress grain yield tolerant genotypes tolerance indices Agriculture (General) S1-972 Plant culture SB1-1110
spellingShingle	keywords: canola frost stress grain yield tolerant genotypes tolerance indices Agriculture (General) S1-972 Plant culture SB1-1110 Akbar Abdollahi Hesar Omid Sofalian Bahram Alizadeh Ali Asghari Hassan Zali Investigation of Frost Stress Tolerance in Some Promising Rapeseed Genotypes
description	Abstract Background and Objective:This study was conducted to evaluate freezing stress tolerance and identify tolerant genotypes among a number of rapeseed genotypes. Materials and Methods:The experiment was carried out in the form of split plots based on randomized complete blocks with three replications in 1397 in a field with an area the 2000 square meters, in the form of autumn cultivation in the agricultural lands of Tikmehdash section of Bostanabad city. The main plot consisted of two dates of common cultivation (September 1) and delayed (September 16) and the sub-plot included 19 rapeseed genotypes. The mentioned genotypes are: SLM046, Opera, L963, Okapi, Nima, KH4, Talaya, L957, Ahmadi, KR18, L1009, Zarfam, Nafis, HW101, Licord, KS7, L14, SW101 and L1008. Results: The results of analysis of variance of yield per hectare under frost stress conditions showed that the effect of stress on the yield per hectare, it was significant at the level of 1% probability. The effect of genotype on plant height and yield per hectare was significant at the level of 1% probability and for 1000-seed weight at the level of 5% probability and was not significant for other traits. Genotype × planting date interaction was not significant in all traits. Also, the comparison of the mean of traits showed that Opera and HW101 genotypes had the highest value in plant height, 1000-seed weight and KS7 genotype in grain yield. Among the indices, MP, GMP, STI, HM and SNPI showed the highest correlation with grain yield under both stress and non-stress conditions and were introduced as the best indices to achieve high yielding and frost tolerant cultivars. Were. Based on the three-dimensional diagram, Opera, Licord, L1008 and Talaye genotypes were identified as the most ideal genotypes under frost stress conditions with above-average total yield under both stress and stress conditions as well as high SIIG values. Conclusion: The results showed that Opera genotype with the highest amount of SIIG was one of the most tolerant genotypes and Nima genotype with the lowest amount of SIIG was one of the most sensitive genotypes to frost stress. The results also showed that the highest grain yield (kg.ha-1) in non-stress conditions was observed in KS7 genotype and the lowest grain yield was observed in KR18 genotype. Under frost stress conditions, the highest grain yield belonged to Opera genotype and the lowest grain yield belonged to KR18 genotype.
format	article
author	Akbar Abdollahi Hesar Omid Sofalian Bahram Alizadeh Ali Asghari Hassan Zali
author_facet	Akbar Abdollahi Hesar Omid Sofalian Bahram Alizadeh Ali Asghari Hassan Zali
author_sort	Akbar Abdollahi Hesar
title	Investigation of Frost Stress Tolerance in Some Promising Rapeseed Genotypes
title_short	Investigation of Frost Stress Tolerance in Some Promising Rapeseed Genotypes
title_full	Investigation of Frost Stress Tolerance in Some Promising Rapeseed Genotypes
title_fullStr	Investigation of Frost Stress Tolerance in Some Promising Rapeseed Genotypes
title_full_unstemmed	Investigation of Frost Stress Tolerance in Some Promising Rapeseed Genotypes
title_sort	investigation of frost stress tolerance in some promising rapeseed genotypes
publisher	University of Tabriz
publishDate	2021
url	https://doaj.org/article/48f6e66738f5492b83a21214632e7812
work_keys_str_mv	AT akbarabdollahihesar investigationoffroststresstoleranceinsomepromisingrapeseedgenotypes AT omidsofalian investigationoffroststresstoleranceinsomepromisingrapeseedgenotypes AT bahramalizadeh investigationoffroststresstoleranceinsomepromisingrapeseedgenotypes AT aliasghari investigationoffroststresstoleranceinsomepromisingrapeseedgenotypes AT hassanzali investigationoffroststresstoleranceinsomepromisingrapeseedgenotypes
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Investigation of Frost Stress Tolerance in Some Promising Rapeseed Genotypes

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