EVALUATION OF MALE INBRED LINES OF SUNFLOWER (Helianthus annuus L.) FOR RESISTANCE TO DROUGHT VIA CHLOROPHYLL FLUORESCENCE

Authors : Yalcin KAYA, A Suna BALKAN NALCAIYI, Sekure CULHA ERDAL, Ozlem ARSLAN, Nuran CICEK, Veli PEKCAN, M İbrahim YILMAZ, Goksel EVCI, Yasemin EKMEKCI

Pages : 162-173

Doi:10.17557/tjfc.15482

View : 28 | Download : 8

Publication Date : 2016-12-15

Article Type : Research Paper

Abstract :Sunflower insert ignore into journalissuearticles values(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 insert ignore into journalissuearticles values(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 insert ignore into journalissuearticles values(vegetative);, R5-1 insert ignore into journalissuearticles values(head formation); and R-6 insert ignore into journalissuearticles values(milky seed);. Based on applied different JIP-Test insert ignore into journalissuearticles values(analysis of O-J-I-P fluorescence transient); parameters such as Drought Factor index insert ignore into journalissuearticles values(-DFI); and Damage index insert ignore into journalissuearticles values(-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. 
Keywords : Helianthus annuus L, sunflower, drought tolerance, inbred lines, chlorophyll a fluorescence, JIPtest