Evaluation of jackfruit germplasm against jack shoot and fruit borer, Diaphania caesalis (Wlk.) (Lepidoptera: Pyralidae)

K SOUMYA, A KRISHNAMOORTHY, PRAKASH PATIL, M G VENKATESHA

Abstract


Sixtyfive germplasmcollections of jackfruit (Artocarpus heterophyllus Lam.) were screened for relative resistance to shoot and fruit borer,Diaphania caesalis (Wlk.) under field conditions at ICAR-Indian Institute of Horticultural Research, Bengaluru during 2013 - 2015. Asignificant variation in infestation of D. caesalis was observed among jack germplasm. The result s showed that out of 65 accessions, 4 accessions were found resistant, 26 were least susceptible, 22 were moderatively susceptible and 13 were highly susceptible. The identified resistant accessions form a basis for further studies on morphological and biochemical analysis to understand host plant resistance.


Keywords


Diaphania caesalis;germplasm;jackfruit;resistance

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