TITLE:
Interactive Effect of Sewage Sludge Application with Phytohormones IAA or SA on Three Broad Bean Cultivars
AUTHORS:
Hamdia M. Abd El-Samad, Sara H. Abd Nabi, Khloud N. S. Abd El-Hakeem
KEYWORDS:
Sewage Sludge, IAA, SA, Broad Bean Cultivars
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.11 No.6,
June
30,
2020
ABSTRACT: The present work has been performed to study the
growth and metabolic activities of three broad bean cultivars (Giza 843, Sakha
1, and Giza 716) which are shown to have different response to sewage sludge
applications and to determine the effects of phytohormones IAA or SA. Along
with identifying the mechanisms of broad bean response and the role of growth regulators
(200 ppm of IAA or 10 mM of SA) in counteract sewage sludge effects is examined.
The situation can be recorded that growth parameters fresh, dry matter and
water content of pods were significantly increased as increasing SSL in
cultivars 843 and in Sakha up to 70% level. However, these parameters were
markedly decreased as increasing SSL in cv. Giza 716. Length and number of pods
were unchanged in cv. Sakha 1, increased in cv. Giza 843 while they decreased
in cv. Giza 716 with increasing SSL.
Phytohormonal application stimulated growth parameters in pods of three tested
cultivars Giza 843, Sakha 1 and Giza 716 with sewage treatments. Soluble sugar
and soluble protein content decreased as increasing SSL in both cv. Sakha 1 and
cv. Giza 716. In cv. Giza 843, soluble sugar was significantly increased while
soluble protein was decreased as increasing SSL. Proline content was unchanged
in cv. Sakha 1, increased in cv. Giza 716 while decreased in cv. Giza 843.
Metabolites (soluble sugar, soluble protein and proline) showed variations in
three broad bean cultivars to IAA or SA application plus sewage sludge
treatments. In cv. Giza 716 SS treatment increased Zn, Ni, PB and Cu. In cv.
Giza 843 SS treatment decreased Zn, Pb, and Cu while increased Ni. In
cv. Sakha 1 SS treatment decreased Zn, Ni, Pb and Cu. Phytohormonal treatments
showed an increasing or decreasing effect in heavy metal in three tested
cultivars.