Two field experiments were conducted at the experimental
farm station of the Faculty of Agriculture, Benha University,
during two growing successive winter seasons of 2009 and 2010 to
study the effect of some treatments of assimilates transport –
inducing materials, antioxidants, energy source , and setting -
inducing materials i.e potassium citrate at 500 and 1000 ppm,
salicylic acid at 200 and 400 ppm, putrescine at 200 and 400 ppm,
humic acid at 500 and 1000 ppm, phosphoric acid at 500 and 1000
ppm and naphthalene acetic acid (NAA) at 20 and NAA at 20
ppm as well as the combinations with all treatments on growth,
flower abscissions, chemical characteristics such as enzyme
activity and seed yield and yield components of faba bean
Faba
vulgaris
cv balday plants. In addition, water was used as
control.Resulted showed that all applied treatments increased all
growth characteristics (i.e. plant height, leaf number, branches,
fresh and dry weight of leaves and stem at 70 days of plant age
during 2009 and 2010 seasons. In addition at 70 days of plant age
during 2010 seasons all applied treatments increased chemical
composition in leaves photosynthetic pigments, N, P, K, Ca, Mg,
Fe, Zn and Mn, total carbohydrates and crude protein and total
free amino acid but total phenol and enzymes activity decreased
with different applied treatments compared with the control in
2010 season. anatomical studies showed that increased of stem
measurements stem diameter, cuticle layer thickness, epidermal
thickness,
Thickness of collenchyma layers, Number of
Collenchyma layers, mean thickness of Collenchyma layer,
Thickness of parenchyma layers,
Number of parenchyma layers,
Mean thickness of parenchyma layer, Cambial region thickness
,
phlome thickness,
Xylem thickness
,
No. of xylem rows/Vascular
cylinder
,
No. of xylem vessels / row
,
Parenchymatous pith
thickness
,
No.of parenchymatous pith layers and thickness of
Parenchymatous pith and leaf anatomy were increased with
different applied treatments. Among these anatomical features
were the most important ones, i.e., thickness of midrib, length &
width of vascular bundle, phloem & xylem tissues and number of
xylem vessels in vascular bundle as well as the leaf blade
thickness. Seed yield and yield components were increased with
all applied treatments and NAA at 20 ppm gave the highest value
during 2009 and 2010 seasons. Finally in seeds at harvest
increased chemical composition total carbohydrates, crude protein
and mineral contents N, P, K, Ca, Mg, Fe, Zn and Mn. NAA at 20
ppm gave highest value in second seasons. |
