Vol. 11, Special Issue 6 (2022)

Author(s):
Pradnya S Kadam, Prerna B Chikte and PK Rathod

Abstract:
Twenty one genotypes of okra, collected from different sources were evaluated for resistance to shoot and fruit borer, Earias vitella at a field of Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (MS) during two consecutive years. Significant differences were recorded among the genotypes employed for evaluation of resistance. Among all the genotypes per cent fruit damage was lowest in GDO-2 (4.57%), GDO-15 (4.82%) and Korchi (4.97%) and hence graded as highly resistant genotypes. GDO-10 (9.54%) declared as resistant and Parmil (16.71%), Arka Anamika (15.46%) and Parbhani Kranti (17.61%) categorised as susceptible genotypes. Whereas, Julie and OH-016 recorded highest fruit damage ie. 21.43 per cent and 20.99 per cent respectively, and registered as highly susceptible genotypes in terms of number as well as weight basis.The antibiosis studies was also undertaken in laboratory conditions among five different graded genotypes. The different biological parameters such as larval survival, larval period, weight of full grown larva and pupa, malformed pupa, adult etc. recorded during this study. The overall results indicated that the survival, development as well as the reproductive behaviour of the pest was adversely affected by resistant varieties.