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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: Forestry × Author: Saresh, N. V × End date: 2013 × Start date: 2013 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Estimation of gene action, combining abilities and heterosis in Grewia optivaDrummond
    (DYSPU, 2013) Saresh, N. V; N.B. Singh
    The present investigation entitled “Estimation of gene action, combining abilities and heterosis in Grewia optiva Drummond” was carried out in the Department of TreeImprovement and Genetic Resources, Dr Y. S. ParmarUniversity of Horticulture & Forestry Nauni, Solan (HP) during 2010-2012. There is collection of Grewia optivagenotypes from different districts of Himachal Pradesh and were maintained in the nursery from which ten genotypes was includedin the study and the plant material of 6 females (SO-1, SO-2, SO-4, SO-8, CH-2 and SI-15) and 4 male (SO-3, SI-6, BI-4 and HA-4) genotypes were control crossed using Line X Tester (6X4 factorial) mating design. Out of twenty four controlled crosses attempted all the crosses successfully produced viable seeds. The per cent successful crosses was highest in SO-2 X SO-3 ( 88.10 %) and minimum was for SO-8 X HA-4 (23.81 %).Maximum seeds per flower (3.80) was recorded for SO-8 X HA-4. Maximum germination percentage (72.72) was recordedfor crosses involving SI-15 X BI-4 (70.59), survival percentage was in SO-1 X BI-4 (97.73 per cent) recorded highest per cent survival, while, CH-2 X BI-4 (57.69 per cent) recorded lower survival per cent. GCA variances were highly significant for seed diameter, seed length, germination per cent, survival per cent, nursery characters like plant height, collar diameter, number of leaves, internodel length and leaf area. Higher magnitude of SCA variances as compared to GCA variances for collar diameter (six months) and fodder quality characters. SO-8 the female parent genotype was proved to be good general combiners for all nursery characters, male parents BI-4 expressed its positive general combining ability for plant height, collar diameter (for two months data) and number of leaves per plant. SI-6 and SO-3 showed positive general combining ability for collar diameter while SI-6 and BI-4 for internodel length. For fodder quality parameter, SO-8 and SO-4, while SI-6 and BI-4 were good general combining ability with respect to crude protein content. The F 1 SO-4 X HA-4 recorded positively significant SCA effects for most of the parameters. The genetic components of variance in F 1 generation revealed that dominance components (H1 and H2) and additive component (D) were highly significant for all the characters.The regression line exhibited that most of the characters were controlled by dominance and over dominance type of gene action. Over dominant gene action with low to high narrow sense and broad sense heritability was observed for many character studied. For nursery characters, SO-8 and SI-6 showed over dominant gene action for plant height, collar diameter with high broad and narrow sense heritability. In SO-8 XSI-6 over dominant gene action was observed for plant height, collar diameter and number of leaves. For fodder quality characters SI-15 X BI-4 gave the highest positive significant SCA effects for crude protein content. From Wr/Vr graph maximum dominant gene action for nursery character were observed in SO-1,SO-2, SI-15,CH-2 and SO-4 and for fodder quality character, female parent CH-2, SO-8 and SI-15and male genotype SO-3, SO-8 and HA-4 exhibited over dominant gene action for crude protein, crude fat and nitrogen free extract. SI-15X BI-4 showed higher mid parent heterosis for plant height (49.06 %), SO-8 X BI-4 expressed its heterotic ability for collardiameter (98.63 %) and Internodel length (46.63 %). Whereas, SO-8 X SI-6 cross showed higher heterosis for number of leaves (23.16), leaf area (122.57 %), leaf weight (171.56), crude protein content (35.77 %) and crude fiber (19.52 %). The paternity analysis using molecular markers disclosed the factthat F 1 ’s are highly similar to their male parents. The 14 RAPD markers data showed that 23 out of 24 hybrids were highly similar to their male parents, whereas, eleven ISSR markers disclosed that 20 out of 24 hybrids were highly similar to theirmale parents.