Eidozehi, K. (2012) Investigation on resistance of wheat varieties to Lesser Grain Borer, (Rhyzopertha dominica) and Rice weevil, (Sitophilus oryzae). Masters thesis, University of Zabol.
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Investigation on resistance of wheat varieties to Lesser Grain Borer, (Rhyzopertha dominica) and Rice weevil, (Sitophilus oryzae).pdf Download (140kB) | Preview |
Abstract
Lesser grian borer, Rhyzopertha dominica, and Sitophilus oryzae is widly distributed in the world and it causes damage to stored products, specially stored grains. Damage cuased by pest result in loss of seed wieght and vigor. Damage and feeding rate of a bove mentional pest cause to seed weight and vigor. Damage and feeding rate of this pest was studied in 8 lines and cultivars sunchas: Kouhdasht, Zagros, Morvarid, Darya, Pastor, Line 17 and N-80-19, in an RCBD with a four replications under the stored condition. A hundred grams of wheat was placed in a crystal container and then 10 adults were put on each container. During seven months, nine times sampling was done and traits such as:seed wieght, live adult, damage percent and weight loss percent were taken note. Results showed that all traits were significantly variant by sampling times and cultivars. Based on means of time of sampling, with increase in pest population, other related traits was increased. At the last sampling, means of live adults, damage percent, infection index and seed wieght loss were 60.00, 48.18, 29.83 and 7.27 respectively. Zogros variety had the highest live adults, damage percent and infection index. Morvarid variety had the highest seed wieght and the lowest seed weight loss and live adult. Pastor varietyhad the lowest seed weight and the highest seed wieght loss percent. Experimental results based on insect traits (number of live insects, dead insects and the growth rate of the population) and seed traits (percent damage, pollution index and percentage of body weight) showed arvieties resistant to pests studied were significantly different. The survey showed, zagros variety had highest sensitive Rhyzopertha dominica and morvarid were showed resistant, in coparison to Rhyzopertha dominica, having lowest loss of damage to wheat variety. In betwee wheat variety, Kouhdasht variety, showed senseitivity at line N-80-19 and highest resistance to Sitophilus oryzae. Reaction of both wheat variety by two pests was significantly different. In point of view line A in sensitive and Morvarid variety showed resistance to Nutoition, growth of Rhyzopertha dominica + Sitophilus oryzae.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Rhyzopertha dominica, Sitophilus oryzae, Plant Resistance, wheat variety |
| Subjects: | Q Science > QK Botany |
| Depositing User: | Mrs najmeh khajeh |
| Date Deposited: | 13 Nov 2022 10:15 |
| Last Modified: | 13 Nov 2022 10:15 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/3238 |
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