Effect of different wheat cultivars on population of Rhyzopertha dominica (Col: Bostrychidae)

Subject Areas : entomology and othea arthropods

K. Eyidozehi ¹ , S. Khormali ² , S. Ravan ³ , A. Khani ⁴

1 - M.s Student, Department of Entomology, Zabol University, Zabol, Iran
2 - Graduated student, Department of Plant Protection, Agricultural Research Center, Golestan, Iran
3 - Plant Protection Department, Agricultural Faculty, Zabol University, Zabol, Iran
4 - Plant Protection Department, Agricultural Faculty, Zabol University, Zabol, Iran

Received: 2013-09-15 Accepted : 2014-05-07 Published : 2015-08-23

Keywords:

Abstract :

Lesser grain borer, Rhyzopertha dominica F. is one the most important pests in Golestan province. One of the method to reduce the pest damage is using resistant cultivars. In this experiment the effect of eight cultivars and lines of wheat such as Kouhdasht, Zagros, Morvarid, Darya, Pastor, Line 17 and N-80-19, on number of live and dead adults and populatioin growth rate of lesser grain borer was studied. One hundred gram of wheat was placed in a crystal container and 10 adults were put on each container and kept under stored condition. Sampling was done every each 7 to 10 days intervals. Data were analyzied using SAS program in split-plot in time design. Analysis of variance showed that number of a live adults and population growth rate in wheat cultivars were significantly different (p <0.01). But no significant differece in number of dead adults. Was observed mean comparison of traits in wheat cultivars showed that Zagros variety had the highest mean of live insects (31.25), dead insects(4.25) and growth rate (00.25) was the most sensitive cultivar. Among the studied cultivars, Morvarid have the lowest mean of live insects and low population growth rate (0.01) Therefor it is the most resistant cultivar among the cultivars tested in this experiant.