8th INTERNATIONAL WHEAT CONFERENCE

SeLeCTIoN of TeRmINAL dRoughT ToLeRANT BReAd
WheAT geNoTyPeS VIA fIeLd ANd LABoRAToRy INdICeS
Ahmadi, G. H. 1 , Tomasyan, G. 2 , Jalal Kamali, M. R. 3 ,
Khodarahami, M. 1 and Aghaeei M. 1
1 Seed and Plant Improvement Institute, Karaj Iran,
2 Agrarian State University of Armenia, and
3 CIMMYT office, Karaj, Iran
E-mail Address of presenting author: gh1345@yahoo.com
In order to finding terminal drought tolerate bread wheat genotypes, fifty entries of
15 th Semi Arid Wheat Yield Trial, 15SAWYT, test of CIMMYT rain fed wheat program
subjected to laboratory and field studies in three location of Iran (Kermanshah, Ahwaz
and Sistan provinces) during 2007-08 and 2008-09 cycles. In first year (07-08) coincide
with field tests achievements, seeds of entries subjected to 0, -4 and -8 bars of osmotic
stress by using of PEG6000 in laboratory. According to shoot and root length and dry
weights, root shoot ratio and regarding grain yield and yield stability of entries in field
trials, 15 genotypes selected for more studies under normal and terminal drought stress
(at booting stage) during 2008-09 period by using of a complete randomized block and
three replications. The SSI, STI, TOL, MP, GMP and HM drought tolerance indices calculated
for each genotype and used to determination of superior lines. According to biplot
analysis of grain yield, and regarding to 100 liter weight (HLW) and flour yield,
entry 336 (OASIS/SKAUZ//4*BCN/3/WBILL) defined as superior line followed by entries
341 (ALTAR 84/AEGILOPS SQUAROZA(TAUS)//OPATA/3/ATTILA ) and 330
(WORRAKATTA/2*PASTOR) respectively. STI, MP, GMP and HM indices confirmed
above results also and so, mentioned entries selected for more studies in improved trials
and seed multiplication.
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