This reduction followed a similar trend as that observed for dry matter accumulation, FA and LAI, emphasizing again that during this stage of the cycle the plant metabolism switches mostly from the production of foliage and photosynthates
to the mobilization of already available photosynthates
to the growth and development of the fruit, slips and suckers (Malezieux, 1993).
data) and photosynthates
, helping to maintain the health of the colony in case of injury or when not all polyps succeed in capturing food or light (Taylor, 1977; Hughes, 1989).
Larson and Whitham (1991) suggested that large galls, such as Pemphigus galls on cottonwood leaves, should occur in the segments closest to the petiole, as large galls need to intercept exported photosynthates
from the galled leaf as well as imported photosynthates
from neighboring ungalled leaves.
Also, reduced chlorophyll contents, photosynthesis, leaf stomatal conductance, accumulation of starch and sugars indicated a decrease in export of non-structural carbohydrates and photosynthates
from leaves to the yield attributed sink due to B deficiency which leads to decline in crop growth (Osterhuis and Zhao, 2006).
This may be due to less leaching loss of nutrients and more starch stored in flag leaf and more availability of photosynthates
for better grain filling as a consequence of increased green leaves [plant.
When four or more leaves were present on the receptor branch, either the photosynthates
produced by the leaves diluted the flowering-inhibiting substance passed across the graft, or the flowering inhibitor(s) produced by the receptor countered the flowering-inducing substances from the donor branch.
The physiological adaptations that allow parasitic plants to extract water, minerals, and (in some cases) photosynthates
from their hosts are complex and varied among the different groups.
This might be due to supply of organic source of nutrients have provided nutrients continuously as well as growth hormones that are linked to the increase in leaf area/plant as a consequence of more assimilatory surface area which promoted production of larger quantities of photosynthates
finally resulting in better plant growth and development.
Reduction in active leaves and LAI at advanced growth phases resulted in reduced translocation of photosynthates
from vegetative to reproductive parts depicting abridged crop growth rate (Hassan et al.
They suggested that the leaves on the staked plants were all exposed to greater light interception leading to a higher accumulation of photosynthates
for vegetative growth.
An additional factor affecting boll retention and boll weight may be intrasympodial interactions among bolls competing for water, nutrients, and photosynthates
Marginal teeth or lobe tips may provide a mechanism whereby leaves can take advantage of the abundant spring light and produce photosynthates
in the juvenile stage while the leaves are still expanding.