Polyamine effects on biochemical events in Sugarcane grown on sodic soils
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Date
2018
Authors
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Mahatma Phule Krishi Vidyapeeth, Rahuri
Abstract
The investigation entitled “Polyamine effect on biochemical events in
sugarcane grown on sodic soils” was carried out to study the efficacy of polyamines viz.,
putrescine and spermidine to ameliorate the effect of soils sodicity by analysing the
seedling height, root length of seedling, relative leaf water content, membrane injury
index, lipid peroxidation, chlorophyll a content, chlorophyll b content, total chlorophyll
content, osmolytes viz.. proline, glycine betaine, reducing sugars, non reducing sugar,
total sugars. The antioxidant enzymes viz., ascorbate peroxidase, catalase, superoxide
dismutase were assayed from the leaves of the two sugarcane cultivars viz., the salt
tolerant CoM 0265 and salt susceptible CoC 671 grown on sodic soils. The polyamines
were applied at 0, 100 and 500μM concentration.
The study revealed that seedling height, root length of seedling, RLWC and chlorophyll
a, b and total chlorophyll decreased significantly in both the varieties of sugarcane when
grown in sodic soils. However, by the application of putrescine and spermidine, the effect
of sodicity was relieved. The effect of 500μM of both polyamines was promising. The
values of membrane injury index and lipid peroxidation were higher in the sugarcane
leaves in both varieties when grown in sodic soils. The lipid peroxidation was found to be
greatly affected by soil sodicity than the MII with the application of putrescine and
spermidine the effect of sodicity was reversed in both the cultivars.