Cotton Genomics and Genetics 2015, Vol.6, No.3, 1-5
4
The response within the varieties to AMF inoculation
significantly differed almost in all growth parameters;
AN-Bayaut-2 variety showed greater response from
beginning of growth period; root and shoot dry weight
and P content in shoot was higher than the S-6524
variety. And at the end of growing season cotton yield
was significantly higher in AN-Bayaut-2 cotton
variety comparing to S-6524. Also, inoculation with
AMF resulted in a 21% and 17% increase in the
weight of bolls plant−1 and cotton fibre qualities,
respectively, as compared with the uninoculated
control (data not shown).
According to (Gargand Baher, 2013) arbuscular
mycorrhizal (AM) fungi are considered to be
bioameliorators of salinity stress due to their
capability to live in contaminated soils and their role
in modulation of biochemical processes. The role of
the AM fungi as P suppliers to the plant appears to be
of great relevance, and AMfungi may solubilize P
from surrounding areas and make it available to roots
(Behl et al., 2003). Thus, in both varieties
AN-Bayaut-2 and S-6524, inoculation with AMF
produced the greatest effect on both plant growth and
nutrient uptake, together with a noticeable increase in
mycorrhizal root colonization.
Conclusions
We observed that cotton growth and development
stimulation by symbioses AMF was higher in soil
salinated condition compared to without symbioses. It
can be concluded that AMF is important under soil
salinity stress condition to help the plant to get more
nutrients from the soil and the importance of AMF
towards cotton varieties is variable. We revealed there
was a significant relationship between AMF
colonization among the cotton varieties. In conclusion,
the results of the present study suggest that the
inoculation of AM fungi in cotton varieties in soil
salinated condition improved the plant growth,
development and yield, thus suggesting that it can
provide an alternative to chemical fertilizers.
Acknowledgements
This research was funded by the OEAD and CASIA post
doctoral fellowships.
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