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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: Genetics × Author: Sharma, Vikas × End date: 2008 × Start date: 2008 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Evaluation of recombinant inbred lines (RILs) of bread wheat for thermo response at seedling stage
    (CCSHAU, 2008) Sharma, Vikas; Yadava, Ramesh Kumar
    The present study has been conducted to Evaluation of recombinant inbred lines (RILs) of bread wheat for thermo response at seedling stage. The seed weight (g), seed density (mg ml-3), shoot length (cm), root length (cm), seedling length, fresh weight (mg), dry weight (mg), vigour (I), vigour (II) and germination % in 100-RILs of Harrier x S308 wheat population were observed at three temperature conditions (15º, 20º and 25ºC) with two replications. The estimates of mean, components of genetic parameters (GCV, PCV,h2, genetic advance etc.) and correlation coefficients along with divergence analysis has been worked out after the establishment of substantial amount of variability in the present material. The estimates of h2 (BS) were high for almost for all traits. Genetic advance expressed as % of mean revealed the maximum scope of improvement is for shoot length at 15ºC. Correlation coefficient was indicated to be highest for dry weight and fresh weight at all the three temperatures, and was followed by seedling length with shoot length and that with vigour I at 15ºC; fresh weight with vigour II at 20º and 25ºC and that of dry weight with vigour I at 20ºC and with vigour II at 25ºC. Euclidean Clustering revealed that these RILs could be grouped in 9 clusters at 15ºC, where as in 8 clusters at 20ºC and 25ºC. Only one combination of RILs HS-135 & -136 had the tendency of grouping under same cluster across all the temperatures. Cluster II had maximum xii number of genotypes (24) at 15ºC whereas cluster III at 20ºC, and 25ºC had 20 and 19 genotypes respectively. The cluster VIII had the minimum number of RILs (two) at 15ºC where as four at both 20ºC and 25ºC in each case. At 15ºC RILs in cluster I were better for SL, RL, Se L, VI in cluster III were better for FW, GP, and that of cluster VIII were better for SW, SD, DW, VII as revealed by cluster means, RILs grouped in cluster I at 20ºC were better for RL, Se L, FW, DW, VI, VII; and that of cluster II were better for SW, SL, whereas in case of cluster III were better for SD, GP on the basis of cluster means. Likewise, RILs in cluster I were better for SW, SD; of cluster II being better for FW, DW, VII, GP, and that of cluster III as better for SL, RL, Se L, VI , as indicated by cluster means at 25oC. Consistently higher mean values at all the three temperatures has been recorded in HS 104 for fresh weight, HS 3 for vigour I & HS 51 for germination %, whereas the RIL HS 98 had consistently lower means in case of fresh weight, dry weight and vigour II, HS 99 for shoot length & HS 86 for dry weight at all the three temperatures. RILs specific for improving the traits, shoot length, root length, seedling length, fresh weight and the various seedling vigour parameters of wheat under diverse temperature conditions have been identified.