Abstract
The anatomical and biochemical basis of resistance of Vigna vexillata (Benth) (Acc. TVNu 72) to Monica testulalis were investigated. An uncharacteristic network of fibrous structures was observed on the petal surface of TVNu 72 but not on those of the susceptible control, IT82D-716. Stems of TVNu 72 and IT82D-716 have thick and closely packed collenchyma cells. Both varieties have been identified as possessing resistance to stem feeding; however, IT82D-716 is susceptible to flower and pod damage. The distance between pod wall epicarp and mesocarp was significantly (P < 0.05) smaller in IT82D-716, but cell and tissue arrangement were similar for both varieties.
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