Cold tolerance of safflower genotypes in field conditions

Authors

  • talat yasari Department of Science of Zabol University, Iran
  • Mohammad Reza Shahsavari Esfahan Agricultural and Natural Resources Research Center, Iran
  • Moselehodinea Rezaaei Esfahan Agricultural and Natural Resources Research Center, Iran

Keywords:

Correlation coefficient, Covariance analysis, Rosette period, Seed yield, Soil surface temperature

Abstract

To reduce cold damage in the cold and semi cold region in country, study and introduction of cold tolerant varieties is very important. In yield trials of winter safflower in Kabootar-Abad Agricultural Research Station different rates of cold damage on plants were observed. Therefore, study of cold tolerance of safflower genotypes was conducted in 2007-2008 at the Kabootar-Abad Research Station of Isfahan. In this experiment twenty safflower genotypes were planted in October 20th using a complete block design with four replications. Genotype effect was significant on frost – bite percentage, No. of frost - bitten plants, period of rosette and ripening and corresponding GDD’s, plant height,1000 kernel weight, seed yield and oil percentage. Gol-Sefied Isfahan and kw4 were the most tolerant and sensitive genotypes to winter cold and had the highest and lowest seed yield, respectively. Genotypes that had more tolerance to winter cold had longer rosette period and correlation between them was negative and highly significant. Sensitive genotypes to winter cold because of lower density produced larger seed and the correlation between seed size and frost-bite percentage was positive and highly significant. Correlation coefficients among frost–bite percentage and plant height and oil percent were not significant.

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Published

2016-01-19

How to Cite

yasari, talat ., Reza Shahsavari, M. ., & Rezaaei, M. . (2016). Cold tolerance of safflower genotypes in field conditions. Scientific Journal of Crop Science, 5(1), 66-72. Retrieved from http://sjournals.com/index.php/sjcs/article/view/334

Issue

Vol. 5 No. 1 (2016): January

Section

Original Article

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Copyright (c) 2020 talat yasari, Mohammad Reza Shahsavari, Moselehodinea Rezaaei

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