Sunflower (Helianthus annuus L.) suffers from terminal drought accompanying with high temperature stress
since it grows mainly in rain fed areas. Therefore, plant breeders try to improve more drought tolerant varieties
and to screen their genetic materials for drought resistance. The present study was conducted to determine
drought tolerance levels of sunflower male inbred lines developed by Trakya Agricultural Research Institute
(TARI), Edirne, Turkey. Inbred lines grown under controlled environmental conditions were sorted by
polyphasic chlorophyll a fluorescence measurements. Drought stress applications were performed at three
sunflower growth stages as R-3 (vegetative), R5-1 (head formation) and R-6 (milky seed). Based on applied
different JIP-Test (analysis of O-J-I-P fluorescence transient) parameters such as Drought Factor index (-DFI)
and Damage index (-DI), 70352 R, 8129 R, 0536 R and 9947 R restorer lines were found more drought tolerant
than those of the other examined sunflower inbred lines, whereas TT 317 R and TT 199 R were determined as
more drought sensitive than others. The drought tolerant inbred lines will be helpful to improve drought
resistance in sunflower breeding programs.
Helianthus annuus L. sunflower drought tolerance inbred lines chlorophyll a fluorescence JIPtest
Primary Language | English |
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Journal Section | Articles |
Authors | |
Publication Date | December 15, 2016 |
Published in Issue | Year 2016 Volume: 21 Issue: 2 |
Turkish Journal of Field Crops is published by the Society of Field Crops Science and issued twice a year.
Owner : Prof. Dr. Behçet KIR
Ege University, Faculty of Agriculture,Department of Field Crops
Editor in Chief : Prof. Dr. Emre ILKER
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