Effect of elicitors on physiomorphological and biochemical parameters of Indian mustard (Brassica juncea) and rapeseed (B. napus)

Abstract

Abstract:The present investigation was aimed to assess the effect of different concentrations of elicitors viz., salicylic acid (SA) and benzothiadiazole (BTH) on physiomorphological and biochemical parameters of Brassica juncea and B. napus cultivars. The field experiment was conducted during 2012-13 at Punjab Agricultural University, Ludhiana, India. Four different treatments of elicitors and a fungicide treatment were given to 10 week old plants up to four consecutive weeks. Content of total soluble protein, free amino acids, total sugars and reducing sugars of leaves of both B. juncea and B. napus were evaluated after each spray. The content of total soluble protein increased, whereas the contents of free amino acids, total sugars and reducing sugars decreased in all the treatments after each spray. Among all the treatments, the combinations of elicitors, i.e., BTH (3 ppm) + SA (33 ppm) and BTH (7 ppm) + SA (17 ppm) exhibited maximum contents of total soluble protein, free amino acids, total sugars and reducing sugars than control in both the cultivars. These treatments were more pronounced in increasing plant height, internodal distance and number of pods per plant in both the cultivars. Our results suggest that the combinations of elicitors act synergistically to promote growth and metabolic activities in B. juncea and B. napus cultivars leading to the induction and regulation of disease resistance.

Dynamics of total proteins during stress alleviation in tomato infected with cucumber mosaic virus

“…Similarly it was observed that combined treatment of these elicitors also expressed higher level of proteins in tomato. Our conclusion is supported by the work of Thakur and Sohal (2014); investigated different concentrations of SA and BTH on physico-chemical parameters of Brassica juncea and B. napus up to four consecutive weeks.…”

Yield Realization of Different Brassica Cultivars under Central Plain Zone of Punjab

“…In India, Rapeseed and mustard (Brassica spp.) is the second most important edible oilseed after groundnut sharing 27.8 per cent in India's oilseed economy with 32 per cent of the total oilseed production in the country (Thakur and Sohal, 2014). Brassicaceae family consists of 338 genera and 3709 species.…”

Effect of Exogenously Field Application of Jojoba Oil and Methomyl on Biochemical Constituents of Broad Bean (Vicia faba L.) Against Cotton Leafworm (Spodoptera littoralis Boisd.)

“…However, significant differences were detected between the broad bean plants treated with jojoba oil and methomyl. Foliar application of some compounds can improve induced resistance for a host plant to counteract the effects of the herbivorous insect through the production of toxic secondary metabolites, changes of biochemistry, physiology, or morphology in the host plant (Mazid et al, 2011;Pokhare et al, 2012;Thakur and Sohal 2014;Thakur et al, 2016). The results of the current study are in line with previous findings of Inbar et al (1998) who reported that exogenous field applications of several abiotic elicitors of defensive systems in tomato (Lycopersicon esculentum), reduced leaf mineral elements and whitefly populations.…”