The effect of IAA and other auxins on the growth of date palm (phoenix dactylifera l.)‎ shoot tips and callus

الملخص EN

Shoot tips and callus of some cultivars of date palms (Phoenix dactylifera L.) were cultured on MS (Murashige and Skoog) and GM5 (Gambourge B5) media by using auxin IAA mainly and other auxins NAA, 2,4-D and IBA. The results showed a significant superiority of cultivar Hillawi than CVS. Zahdi, Barhee, Braim and Khasab for growth value and dry weight of shoot tip segments.

There is a significant superiority of auxin IAA in MS medium than both IAA and 2,4-D in GM5 for growth value and dry weight for shoot tip segments of CV. Hillawi, and significant superiority of auxin IAA at level 100mg/L than auxin NAA (100mg/L) for growth value and dry weight of shoot tip segments of cv.

Hillawi , and also a significant superiority of auxin IAA (10mg/L) than IAA at levels (0, 25, 100mg/L) for growth value an dry weight of both shoot tips segments and leaves primordia of cv.

Sayer.

Finally there is a significant superiority of auxin IAA (10mg/L) than auxins NAA, IBA and 2,4-D at the same levels for growth value of embryogenic callus of cvs.

Barhee and Hillawi whereas the superiority was for both IAA, NAA, than the rest auxins for embryo length for cvs.

Barhee and Hillawi.