Agronomical and morphophysiological based selection of triticale promising lines in international nurseries

Document Type : Research Paper

Authors

1 Assistant Professor, Department of Cereals Research, Seed and Plant Improvement Institute, Karaj, Iran

2 Assistant Professors, Khorasan Razavi Agricultural Research Center, Mashhad, Iran

3 Researcher in South Khorasan Agricultural Research Center, Birjand, Iran

Abstract

In order to select high yielding triticale promising lines with better agronomical and morphophysiological characteristics, this experiment was conducted on سی triticale genotypes received from CIMMYT international nurseries trials in 2010-11 crop season at research stations of Karaj, Mashhad and Birjand. Based on the results of combined ANOVA, the effect of genotype was statistically significant on grain yield and most studied characteristics (p<0.01); which showed different responses of the genotypes to the locations. The results of coefficients of correlation between the studied characterstics showed that the grain yield was positively and significantly correlated with related characteristics of remobilization and its efficiency and also peduncle weight, peduncle height and penultimate weight. According to the results of stepwise regression, the two characteristics of remobilization and peduncle length were respectively the most influencing characteristics on grain yield determining more than 50درصد of the grain yield variation (r2 = 0.533). Based on the results of the polygon studying response of the studied genotypes in the target locations, the genotypes 29, 20 and 23 were among the best suited ones for all the three locations. While results of the biplots for the genotypes for the studied characteristics showed highest relationship of grain yield with remobilization. Thus, the genotypes 23 (IRON_2/5/DISB5/3/S…BAGAL_2//FARAS_1), 29 and 28 as sisterlines (LIRON_2/5/DISB5/3/SPHD/PVN//YOGUI...) (and 20 (DAHBI_6/3/ARDI_1/TOPO 1419//ERIZO…) with higher remobilizations and grain yields were selected as the best genotypes. As a conclusion, it seems the remobilization can be regarded as a recommended characteristic in selection of triticale promising lines for target locations.

Keywords

References

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Iranian Journal of Field Crop Science
Volume 46, Issue 3 - Serial Number 3
October 2015
Pages 451-461

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History

  • Receive Date: 01 March 2015
  • Revise Date: 25 May 2015
  • Accept Date: 22 June 2015
  • Publish Date: 23 September 2015

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