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Dr. Y. S. Parmar University of Horticulture & Forestry, Solan

Dr. Yashwant Singh Parmar University of Horticulture and Forestry, Solan, was established on 1st December, 1985 with the objective to promote education, research and extension education in the fields of Horticulture, Forestry and allied disciplines. Late Dr. Yashwant Singh Parmar, the first Chief Minister and the architect of Himachal Pradesh perceived the importance of Horticulture and Forestry to develop and improve the State economy which led to the establishment of this University. Its history lies in erstwhile Himachal Agricultural College, Solan, established in 1962 and affiliated to the Panjab University. It became one of the campuses of Agriculture Complex of Himachal Pradesh University on its formation in 1970. Consequent upon the establishment of Himachal Pradesh Krishi Vishvavidyalaya in 1978, this campus became its Horticulture Complex and finally in 1985, assumed the status of a State University, being the only University in the country engaged exclusively in teaching, research and extension in Horticulture and Forestry. The University is located at Nauni in Solan District of Himachal Pradesh, 13 km from Solan on Solan-Rajgarh Road, at an elevation of 1300 metres above mean sea level. Solan town is situated on national highway (NH-22) and is well connected by train and bus services. The University has four constituent colleges, out of which, two are located at the main campus Nauni, one for horticulture and the other for forestry, having 9 and 7 departments, respectively. The third College i.e., College of Horticulture & Forestry is located at Neri in Hamirpur District on Nadaun-Hamirpur state highway, about 6 Km from Hamirpur town and is well connected with bus service. The college offers three Undergraduate Degree Programmes i.e. BSc (Hons.) Horticulture, BSc (Hons.) Forestry and B. Tech. Biotechnology and MSc degree programme in a few subjects. The fourth college i.e. College of Horticulture and Forestry, Thunag (Mandi) is located at Thunag District Mandi. This college offer BSc (Hons.) Horticulture and BSc (Hons.) Forestry degree programme. In addition, there are five Regional Research Stations, 12 Satellite Stations and five Krishi Vigyan Kendras (KVKs) situated in different zones of the State.

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Subject: Plant Pathology × Author: GURVINDER KAUR × End date: 2015 × Start date: 2015 × Type: Thesis ×
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    ThesisItemOpen Access
    VARIABILITY AND MANAGEMENT STUDIES OF Botrytis cinerea CAUSING GREY MOULD IN GLADIOLUS
    (2015) GURVINDER KAUR; CHANDEL, SUNITA
    ABSTRACT Botrytis Grey Mould (Botrytis cinerea Pers. ex Fr.) in gladiolus is one of the major limiting factors in its cultivation affecting both yield and fruit quality in Himachal Pradesh. Present investigations were undertaken with an objective to study the prevalence of the disease, variability among the Botrytis isolates on the basis of cultural, morphological, pathological and molecular parameters. The role of environmental factors in disease development, germplasm screening and devising of suitable disease management strategies were elucidated. Botrytis grey mould was found to occur in moderate to severe form in different gladiolus growing areas of Solan, Shimla, Mandi, Bilaspur, Kullu and Sirmour districts of Himachal Pradesh. The average disease incidence and severity in two years of surveys (2012- 2013) ranged between 14.83 to 64.92 and 2.98 to 33.33 per cent, respectively. Based on the cultural, morphological and molecular characterization, out of fifteen isolates, fourteen were identified as Botrytis cinerea and one was identified as Botrytis fabae. Mycelial growth and sporulation was recorded maximum on PDA media at temperature of 20oC however sporulation was obtained excellent at temperatures 10 and 15oC. Sclerotia formation was more at low temperature compared to high temperatures (30oC). Fructose and asparagines were adjudged best as carbon and nitrogen sources for multiplication of the pathogens. There was variation in among the isolates in respect to physiological studies. Molecular variability was carried by using 45 RAPD primers, out of which only 25 primers were amplified and showed 100 per cent polymorphism. DNA amplification was done by using 16 ISSR primers, only 14 primers were amplified and gave 143 polymorphic bands and showed 100 per cent polymorphism. Moderate temperature (22±2oC) coupled with high RH (80%) favoured the disease development under natural epiphytotic conditions. Esta Bonita, Grand Prix and Amesterdam cultivars were found to be resistant against grey mould under natural conditions. In vitro effect of different fungicides on mycelial growth of B.cinerea revealed that two fungicides i.e., Quintal and Contaf gave no mycelial growth with cent per cent inhibition at all the concentrations tested. Amongst different bioresources, minimum growth was recorded in Allium sativum and Azadirachta indica. Amongst 15 plant oil peppermint, geranium, palmarosa, citronella and oregano completely inhibited the growth of B. cinerea. Integrated disease management studies revealed that the treatments, Quintal+ Allium sativum + Neem oil and Contaf + Allium sativum + Neem oil gave minimum disease severity and maximum disease reduction of 94.40 and 93.19 per cent, respectively. Plant growth parameters viz., plant height, spike length,no. of flowers/ plot and yield also increased with application of these combinations in field conditions during the years 2012-2013.