Variability Assessment of New Developed Lines of Chia (Salvia hispanica L.)

Document Type : Research paper

Authors

1 Floriculture Department, Faculty of Agriculture, Assiut University, Assiut, Egypt.

2 Department of Vegetables, Faculty of Agriculture, Assiut University, Egypt.

3 Agronomy Department, Faculty of Agriculture, Assiut University, Assiut, Egypt.

10.22059/ijhst.2025.390454.1030

Abstract

Three populations of chia (Salvia hispanica) were used. They were obtained from different sources. No realistic differences were detected among these populations; therefore, only one chia population was chosen for the current breeding assessment. Due to the wide range of plant heights observed, this variable was used as a classification factor among the germplasm. It is easy to be distinguish visually and is usually used as a monitor to seed yield. The plant height was categorized tall population (90-110 cm), medium (70-89 cm) and short (50-69 cm). Because chia is self-pollinated and fertilized crop, it was assumed to be a composite of pure lines. Progeny test results confirmed the genetic purity status (homozygosity) of the selected plants within population of different plant height categories. Narrow sense heritability estimated by parent-offspring regression ranged from 0.26 (spike length) to 0.97 (plant height). Consequently, the expected selection response values were high for the most studied traits. All traits exhibited strong genotypic associations and were associated with unity (1.00) in some cases with seed weight per plants. This was reflected well in the parameters of the correlated response and relative efficiency of indirect selection. Selection for seed weight affected all other traits with varying degrees of correlated response. breeding chia lines were derived following tandem multi-traits selection. Two of these lines (1 and 7) seemed to hold a promise for improving chia. These lines may directly be utilized in production of chia after testing their stability or as parental genetic material in cross breeding.

Keywords

International Journal of Horticultural Science and Technology
Volume 13, Issue 4
October 2026
Pages 803-820

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History

  • Receive Date: 13 February 2025
  • Revise Date: 16 June 2025
  • Accept Date: 17 June 2025

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