TY  - JOUR
T1  - Yield, Biochemical Responses and Evaluation of Drought Tolerance of Two Barley Accessions
“Ardhaoui” under Deficit Drip Irrigation using Saline Water in Southern Tunisia
AU - Bagues, Mohamed AU - Souli1, Ikbel AU - Boussora, Faiza AU - Nagaz, Kamel 
JO  - Research Journal of Agronomy
VL  - 14
IS  - 4
SP  - 17
EP  - 23
PY  - 2020
DA  - 2001/08/19
SN  - 1815-9354
DO  - rjagr.2020.17.23
UR  - https://makhillpublications.co/view-article.php?doi=rjagr.2020.17.23
KW  - Drought
KW  -proline
KW  -soluble sugars
KW  -minerals
KW  -yield
KW  -drought tolerance indices and barley
AB  - In Southern Tunisia, two local barley
accessions CV. Ardhaoui; “Bengardeni” and “Karkeni”
were cultivated in field under deficit drip irrigation with
saline water. Three treatments were used: control or full
irrigation T0 (100% ETc) and stressed T1 (75% ETc), T2
(50% ETc). Proline and soluble sugars contents increases
significantly under drought between accessions compared
to control and varies between growth stages. Moreover,
the increasing of Ca<sup>2+</sup> concentration enhances the
absorption of Na<sup>+</sup> ion, consequently K<sup>+</sup>/Na<sup>+</sup> decrease
significantly between accessions, these results suggest
that a high tolerance of Bengardeni accession to drought
stress. Therefore, drought tolerance indices (STI, SSI,
MP, GMP, YSI and TOL) were used to identify high
yielding and drought tolerant between accessions. MP
explained the variation of GYi. GMP and STI explained
the variation of GYs. The high values of MP, STI and
GMP were associated with higher yielding accession.
Higher TOL value is associated with significant grain
yield reduction in stressed environment suggesting higher
stress responses of accessions. Significant positive
correlations between MP, STI and GMP and negative
between YSI and SSI. MP, STI, GMP and YSI, TOL, SSI
are not correlated with each other.
ER  -