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Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

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Subject: Genetics and Plant Breeding × Author: Amadabade, Jairam × End date: 2017 × Start date: 2017 × Type: Thesis ×
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    ThesisItemOpen Access
    Determination of gene action and heterotic response across the environments for yield and yield contributing traits in short duration maize (Zea mays L.)
    (G.B. Pant University of Agriculture and Technology, Pantnagar (Uttarakhand), 2017-01) Amadabade, Jairam; Singh, N.K.
    The present investigation was undertaken on experimental materials derived through crossing ten inbred lines in half diallel mating design. The evaluation experiments on 10 inbred lines their 45 single crosses and a hybrid check PSM1 were conducted in RCBD with two replications under two plant population densities namely optimum plant density and high plant density during Rabi, 2014-15 and Kharif, 2015 seasons at N. E. Borlaug Crop Research Centre, Pantnagar, Uttarakhand, India. The objectives of the investigation were (i) to estimate combining ability (ii) to determine the extent of heterosis and parental and heterotic contribution to the per se performance of hybrids (ii) to identify superior single cross hybrids (iii) to assess the response of hybrids across the environments in maize. Observations were recorded on grain yield and other related traits and data were analyzed using appropriate statistical and biometrical models. Analysis of variance indicated sufficient amount of variability in the experimental material for all the characters across the environments except canopy temperature in E1 and E4 and tassel length under all four environments. Mean performance of parents and hybrids for traits namely ear length, ear diameter, number of kernel rows per ear, number of kernels per row and 100 kernel weight was noted to be maximum in E1 environment, whereas for grain yield it was maximum in E2 environment. Analysis of variance for combining ability revealed significant GCA and SCA variances for most of the characters indicating the importance of both additive and non-additive genetic effects for expression of the traits. Estimates of σ2 SCA were greater than the σ2 GCA for all the characters across the environments indicating pre-dominance of non-additive variance. The inbred lines P4, P6, P9 and P10 had good GCA effects for most of the characters across the environments; these may be utilized as parental lines in breeding programmes. Promising crosses for grain yield with highest SCA effects were P3×P8 in E1, P3×P10 in E2 and E4, P4×P9 in E3 and pooled environment. The cross P4×P9 also had high SCA effects for ear length and number of kernels per row in pooled environment. The most promising hybrids exhibiting significant MPH, BPH and SH for grain yield were P4×P7 and P4×P9 in E1; P1×P8 and P1×P5 in E2; P4×P7 and P4×P9 in E3; P4×P7 and P3×P10 in E4 and P4×P7 and P4×P9 in pooled over environment. Inbred parents contributions to the per se performance of the crosses were found to be higher than heterosis contribution for yield and yield contributing traits. AMMI analysis of variance indicated considerable effects of environment, genotype and genotype x environment interaction on total variability for all the characters. The best adapted genotypes with high per se performance for grain yield were P7×P10 in E1, P1×P8 in E2, P6×P9 in E3, P6×P9 in E4. Further, the comparative assessment of grain yield stability of genotypes through regression, AMMI and GGE biplot statistics identified P4×P7 as the most stable cross with high per se performance for grain yield across the environments.