author(s)
Mukesh Kumar Patra and Dhirendra Kumar Nayak

abstract
Study of biochemical characterization of shoots and roots of four tomato cultivars, Banki Local (Resistant), Kashi Aman (Moderately resistant), Utkala Dipti (Susceptible) and Utkala Kumari (Highly susceptible) grown under sterile, Meloidogyne incognita and Glomus fasciculatum inoculated soil both individually and in combinations revealed that post inflectional increase in chlorophyll ‘a’, ‘b’ and total in G. fasciculatum inoculated leaves and that of decrease in M. incognita and M. incognita + G. fasciculatum inoculated leaves over check. Decrease of chlorophyll content was maximum in highly susceptible variety Utkala Kumari (chl a-80.35%, chl b- 76.79%, Total chl- 78.19%) and that of minimum in resistant variety Banki local (chl a-10.98%, chl b- 8.48%, total chl- 9.62%) in nematode inoculated plant over check. There was decrease in total sugar content of shoot in T₁ having 10.57%, 22.49%, 43.63% and 52.73% & increase in root having 14.04%, 26.29%, 62.22% and 75.72% in Banki local, Kashi Aman, Utkala Dipti and Utkala Kumari respectively compared to untreated check (T₆). Percent decrease of starch content in shoot was maximum in T₃, followed by T₅, T₄, and that of T₂ over check. Maximum accumulation of starch was marked in the roots of T₃, T₄ and T₅ where both nematode and VAM were inoculated than T₁ over check. Comparing T₃, T₄ and T₅ maximum decrease of reducing sugar in shoot was observed in T₃ followed by T₅ and T₄ in all varieties over check. In T₁ maximum increase of reducing sugar in root was seen in Utkala Kumari (73.15%) followed by Utkala Dipti (65.53%), Kashi Aman (24.34%) and minimum in Banki Local (10.29%).