Evaluation of drought tolerance in sugar beet test cross hybrids under water deficit stress

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HAMIDI H.; RAMEZANPOUR S.S.; AHMADI M.; SOLTANLOO H.

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Journal: Environmental Stresses in Crop Sciences Year:2020 | Volume:13 | Issue:3 Page(s): 715-734

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Title

Evaluation of drought tolerance in sugar beet test cross hybrids under water deficit stress

Author(s)

HAMIDI H. | RAMEZANPOUR S.S. | AHMADI M. | SOLTANLOO H. | Issue Writer Certificate

Keywords

Drought stressQ2

HybridQ2

Stress tolerance indexQ2

White sugar yieldQ2

Abstract

This experiment was conducted to evaluate the drought tolerance of sugar beet test cross Hybrids (57 Hybrids) with seven controls including IR7, Mandarin, Jolgeh, Paya, Fotora, SC (7112*SB36) and origin population) in Khorasan Razavi Agricultural and Natural Resources Research and Education Center in two separate experiments under field conditions with unbalanced lattice design (8×8) with four replications in 2016. Irrigation was done routinely up to the thinning. Subsequent irrigations were done after 90 mm and 200 mm evaporation from the class A evaporation pan in non-stress and water deficit stress conditions, respectively. In this research, traits such as root yield, sugar content, sugar yield, Na, K, N, alkalinity, molasses sugar, white sugar content, White sugar yield and extraction coefficient of sugar were measured. Combined analysis of variance showed that there was a significant difference (p≤ 0. 01) among studied genotypes and different irrigation regimes for all traits. The highest White sugar yield in non-stress and water deficit stress conditions were observed in (7112*SB36)*S1– 73 (13. 34 ton. ha-1) and Mandarin (9. 37 ton. ha-1), respectively. Correlation analysis revealed that the relationship between White sugar yield with root yield, sugar content, sugar yield, white sugar content and extraction coefficient of sugar was significantly positive in two conditions, while its correlation with Na, K, alkalinity and molasses sugar was significantly negative. According to the results of the stepwise regression analysis, more than 99 percent of White sugar yield variation was explained by sugar yield, extraction coefficient of sugar, root yield and sugar content in non-stress and Drought stress conditions. Also the results showed that in non-stress, root yield (1. 17) and in stress conditions, sugar yield (0. 89) had the most direct effect on White sugar yield. Finally, (7112*SB36)*S1– 73, (7112*SB36)*S1-66 and (7112*SB36)*S1-72, which were superior in terms of Stress tolerance index (STI) and also in terms of yield traits in stress condition, were introduced as the most drought tolerant Hybrids.

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APA: Copy

HAMIDI, H., RAMEZANPOUR, S.S., AHMADI, M., & SOLTANLOO, H.. (2020). Evaluation of drought tolerance in sugar beet test cross hybrids under water deficit stress. ENVIRONMENTAL STRESSES IN CROP SCIENCES, 13(3 ), 715-734. SID. https://sid.ir/paper/389408/en

Vancouver: Copy

HAMIDI H., RAMEZANPOUR S.S., AHMADI M., SOLTANLOO H.. Evaluation of drought tolerance in sugar beet test cross hybrids under water deficit stress. ENVIRONMENTAL STRESSES IN CROP SCIENCES[Internet]. 2020;13(3 ):715-734. Available from: https://sid.ir/paper/389408/en

IEEE: Copy

H. HAMIDI, S.S. RAMEZANPOUR, M. AHMADI, and H. SOLTANLOO, “Evaluation of drought tolerance in sugar beet test cross hybrids under water deficit stress,” ENVIRONMENTAL STRESSES IN CROP SCIENCES, vol. 13, no. 3 , pp. 715–734, 2020, [Online]. Available: https://sid.ir/paper/389408/en

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