1
In which year first record on the involvement of nematodes in disease complex was reported?
EXPLANATION
Disease Complexes with Fungi & Bacteria
- Historical Discovery of Nematode-Fungal Disease Complexes:
- Atkinson's Landmark Discovery (1892): In 1892, the American plant pathologist George F. Atkinson published the first definitive experimental evidence demonstrating the synergistic role of nematodes in plant disease complexes.
- The Cotton Wilt Complex: Atkinson proved that root-knot nematodes (Meloidogyne sp.) wound host roots and physiologically predispose cotton plants to severe wilt caused by Fusarium oxysporum f. sp. vasinfectum, whereas cotton plants grown in Fusarium-infested soil without nematodes developed significantly less wilt.
- Conclusion: The first record of a nematode disease complex was reported in 1892 (Option 4).
Correct option: (4) 1892
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