Identification of Monilinia species the Causal of brown rot in stone fruit trees and it biological and chemical control in Golestan province

Gharekhani, M. (2011) Identification of Monilinia species the Causal of brown rot in stone fruit trees and it biological and chemical control in Golestan province. Masters thesis, University of Zabol.

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A Brown rot disease is one of the most important disease of stone fruit trees as was marked by several species of fungi Monilia. In this study 70 samples of bloom and suspected contamination fruit during from 2010- 2011 were collected from of the cities of Golestan province. Apothecium possible to produce in the garden, shadow, experimental field plots, shadow and the laboratory was investigated. Control of disease by comparing the effects of several pesticides (copper oxychloride ¬chloride, RoveralTS and Karbndazym), and biological compounds (Subtelin and Trichodermin B) based on a completely randomized factorial design in January 2010 to May 2011 in Garden Collection Foundation oppressed in Aliabad assessment and was conducted. To examine the susceptibility / resistance of different cultivars of peach (Angeri, Shast roze and Zaferani), plum (Ghatretala, Shublon and Santaroza) and nectarines (Cibi, Redgold and Moghan) during bloom and fruit the garden is completely random experimental design with nine treatments and three replicates were performed. Changes in total phenol levels after incubation in four time randomized factorial design was evaluated. The survey results showed that two species, M. laxa and M. fructigena are major cusal agents of brown rot disease, stone fruit in Golestan province with the order 1 / 99 percent. M. fructigena has spindle- shaped conidia with size of 2/10-6/6 × 4/17-5/12 µm and a colony with yellow pea- shaped, But about M. laxa, spindle shape was oval and elongated with size 9-5 × 15- 11 µm and the colony was gray with lobed margins .In none of the conditions tested did not produce Apothecia. Effects of fungicides and biological products used on the amount of blight bloom caused by the pathogen M. laxa was significant (p<0.01). So that the most effective (%7/083) to roveralTS and minimal impact to (%22/75) was associated Trichodermin B. But the amount of fruit contamination whit Trichodermin B to %25 and RvralTS to %9/166 respectively in the group that reached statistical b and f place. Severity of infection (wound diameter) with Trichodermin B 22/5 millimeter, and 27/667 mm was to copper oxychloride. The results of the susceptibility / resistance of stone fruit cultivars the pathogen M. laxa in the flowers and blossoms burning was means (p<0.01). So Zaferani and Shast roze of the peach cultivars, respectively, with an average of %18/333 and %21/333 the contamination in the statistical a and b are the most sensitive and plums Santaroza and nectarines cibi with an average of %5/333 and %4/333 pollution placed in the d group and most resistant varieties to this disease in bloom have been. But the fruit, peach Shast roze by averaging %25/667 and Angeri with %24/667 in a group most and Cibi nectarine and Shublon plum in c grouped have been having the lowest sensitivity. The severity rot in Shast roze peach cultivar was 34/889 millimeter and of Shublon plums 13/557 mm placed in group a and d, respectively, which were Phenol extraction and compared the results of the total variance in the time of (1, 2, 4 and 6 days after inoculation of the fungus) on different cultivars showed the highest phenol 12/884 micrograms per gram of leaves of an Cibi nectarine and lowest 9/7 micrograms per gram of leaf of peach varieties Zaferani is the way in which statistical a and f were. The total amount of phenol the sixth day after inoculation increased and amounts of 14/709 mcg was reached in a statistical category

Item Type: Thesis (Masters)
Uncontrolled Keywords: Apothecium, Brown rot, sensitivity, Pesticides, Total phenol, stone fruits, M. fructigena, M. laxa
Subjects: Q Science > QK Botany
Depositing User: admin admin1 admin2
Date Deposited: 26 Oct 2016 10:30
Last Modified: 26 Oct 2016 10:30

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