STUDY THE INFLUENCE OF WHEAT VARIETIES FOR ORIENTATIONAL PREFERENCE AND DEVELOPMENT PERIOD OF SITOPHILUS ORYZAE, UNDER LABORATORY CONDITION

D.K. SURYAWANSHI¹*, H.R. JATAV², R. KANOJIYA^3
1Scientist, Plant Protection, Krishi Vigyan Kendra, Ujjain, 456010, Rajmata Vijayaraje Scindia Krishi Vishwavidyalaya, Gwalior, 474002, Madhya Pradesh, India
²Scientist, Agriculture Extension, Krishi Vigyan Kendra, Ujjain, 456010, Rajmata Vijayaraje Scindia Krishi Vishwavidyalaya, Gwalior, 474002, Madhya Pradesh, India
³Horticulture Assistant, Regional Agriculture Research Station, Ujjain, 456010, Rajmata Vijayaraje Scindia Krishi Vishwavidyalaya, Gwalior, 474002, MP, India
* Corresponding Author : dksuryawanshi2008@gmail.com

Received : 05-01-2020     Accepted : 27-01-2020     Published : 30-01-2020
Volume : 12     Issue : 1       Pages : 700 - 703
Genetics 12.1 (2020):700-703

Keywords : Sitophilus oryzae (Lin.), Wheat store grain pest, Sujata
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Regional Agriculture Research Station, Krishi Vigyan Kendra, Ujjain, 456010, Rajmata Vijayaraje Scindia Krishi Vishwavidyalaya, Gwalior, 474002, Madhya Pradesh, India
Author Contribution : All authors equally contributed

The studies were carried out in laboratory condition in the Regional Agriculture Research Station, Krishi Vigyan Kendra, Ujjain, 456010, Rajmata Vijayaraje Scindia Krishi Vishwavidyalaya, Gwalior, 474002, Madhya Pradesh, during 2017-18 to Study the influence of wheat varieties for orientational preference and development period of Sitophilus oryzae, under laboratory condition Variety Sujata was least preferred orientation, while maximum orientation was on HI-8663 (Poshan), which was recorded significantly higher than rest of the varieties under test condition. The varieties significantly influenced the developmental period (egg to adult), which ranged from 28.9 days in Sujata to 40.3 days in HI-8663 (Poshan). The number of adults emerged from different varieties with same exposure period ranged from 3.5 in GW-173 to 9.2 in HI-8663 (Poshan). There was a positive correlation between volume of grain and adult emergence (r=0.999), however, there was a negative correlation between density of grains and adult’s emergence (r= 0.837). Percentage of grain damage was comparatively low (2.35-9.20 %) in GW-273 and lok-1, while maximum (9.20 %) grains were damaged in Lok-1. The percent grain damage influenced positively with the volume Wheat variety Sujata was found less susceptible against Sitophilus oryzae in which lower numbers of adults were oriented and has least emergence of adults, percent grain damage and percent loss in grain weight. The other promising varieties were GW-173, GW-273, PBW-343 and Raj-1555. Variety HI-8663 (Poshan) was most susceptible on the basis of above parameters. of 100 seeds and negatively with the density of seeds.

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