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Chaudhary Charan Singh Haryana Agricultural University, Hisar

Chaudhary Charan Singh Haryana Agricultural University popularly known as HAU, is one of Asia's biggest agricultural universities, located at Hisar in the Indian state of Haryana. It is named after India's seventh Prime Minister, Chaudhary Charan Singh. It is a leader in agricultural research in India and contributed significantly to Green Revolution and White Revolution in India in the 1960s and 70s. It has a very large campus and has several research centres throughout the state. It won the Indian Council of Agricultural Research's Award for the Best Institute in 1997. HAU was initially a campus of Punjab Agricultural University, Ludhiana. After the formation of Haryana in 1966, it became an autonomous institution on February 2, 1970 through a Presidential Ordinance, later ratified as Haryana and Punjab Agricultural Universities Act, 1970, passed by the Lok Sabha on March 29, 1970. A. L. Fletcher, the first Vice-Chancellor of the university, was instrumental in its initial growth.

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Subject: Plant Breeding × Author: Ghritlahre, Surendra Kumar × End date: 2013 × Start date: 2010 × Type: Thesis ×
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    ThesisItemOpen Access
    Studies on genotypic performance and genotype x environment interactions in rice in different production systems
    (CCSHAU, 2010) Ghritlahre, Surendra Kumar; Sarial, A.K.
    In any breeding program, it is necessary to screen and identify phenotypically stable genotypes that could perform uniformly under different environmental conditions. Such a breeding effort requires basic information of g x e interaction. Twenty genotypes comprising released varieties and elite lines including hybrids and aromatic were evaluated in two production systems viz; System of rice intensification (SRI) and normal cultivation environments during kharif 2009 at CCS HAU, rice research station, Kaul. Eight environments E1 – E4 in SRI and E5 - E8 in normal production system were created through different combinations of seedling age, spacing and seedling per hills. The experiment was laid down in RBD with two replications in a plot of 1 m2 In SRI production system young seedling of 15-days old were transplanted at one seedling per hill in wide spacing of 25 x 25 cm2 . While in normal production system old seedlings of 25 days age were transplanted at 2 seedlings per hill in narrow spacing of 15 x 15 cm2. Results revealed that normal production system with wide spacing and 1-2 seedlings/hill was found to be the best followed by SRI with wide spacing and 1 seedling /hill. Normal production system with narrow spacing and 2 seedlings /hill was the poorest. Varieties responded differentially for various traits under SRI production systems. In general, there was reduction in days to flowering & increase in days to maturity for all varieties, increased plant height in 10 out 20 and decrease in others, increased panicle length and panicle weight in 8, spikelets /panicle in 9, per cent filled spikelets in 6 & test grain weight in 8.. Irrespective of age of seedlings, all genotypes recorded almost double the number of tillers under wide spacing than narrow. Increase in biological yield per plant, grain yield per plant and harvest index only in 4 namely IR64, HKR 46, Pusa 112 and HKRH 1094 . These varieties also showed increased test grain weight and tillers number. The increase in yield ranged from 11.78.to 24.31%. Confirmatory experiments of these varieties for recommendation for SRI cultivation are required to be conducted on larger plot size over locations and years. Pooled analysis for g x e interaction and stability revealed that the genotypes and environments were highly significant (p < 0.01) for all twelve characters studied. The genotype x environment interaction was significant for days to flowering, per cent filled spikelets, grain yield per plant, days to maturity, test grain weight and biological yield per plant but non-significant for remaining six traits. Partitioning of variance into linear and non-linear components showed that both contributed towards g x e interaction. All key components of SRI except tillers no. exhibited g x e interaction. Stability parameters identified the following genotypes as stable; HKR-47 for days to flowering & days to maturity, PR 114 for days to flowering & % filled spikelets, HKR-48 & HKR-46 for test grain weight & days to flowering, HKR-126 for days to maturity, HKR-127, HKR-120, CSR 30, Pusa-1121& IR 64 for test grain weight. Genotypes identified suitable for favourable environments were HKR 126 for days to flowering & test grain weight, HSD 1 for days to flowering, PAU 201 for test grain weight, Govind for % filled spikelets & days to flowering. Genotypes identified suitable for unfavourable environment were HSD 1 for test grain weight, HKRH 1094, HKR 48 for days to maturity, PAU 201 for days to flowering. The varieties identified as stable and suitable for favourable environments for yield and other traits need to be tested in macro environments over space & time. These could be utilized for direct cultivation as well as for improvements of other cultivars.