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20214
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Subject: Seed Science and Technology × End date: 2021 × Start date: 2021 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Effect of seed treatments on seed quality of onion (Allium cepa L.) during storage
    (CCSHAU, Hisar, 2021-10) Rathi, Prashant; M.S., Puneeth Raj
    The present investigation was carried out at the Department of Seed Science and Technology, CCA Haryana Agricultural University, Hisar to assess “ Effect of seed treatments on seed quality of onion (Allium cepa L.) during storage”. The seeds of onion (Cv. HO-3) was treated with neem oil, nano particles, thiram and chlorpyrifos along with their combinations and stored. Secondly seeds was primed with ethanol, water, GA3, nanoparticles and Trichoderma after 10 months of storage period. All the treatments was evaluated for seed quality parameters viz. test weight (g), standard germination (%), speed of germination, seedling length (cm), seedling dry weight (mg), vigour index I & II, electrical conductivity (μS/cm/g), catalase activity (μmoles/min/g), dehydrogenase activity (ODg-1ml-1), peroxidase activity (μmoles/min/g), superoxide dismutase activity (IU/g F wt). Results revealed that seeds treated with T12 – Chlorpyrifos 20 EC + Thiram + ZnO Nano particles were found significantly higher in seed quality parameters followed by T8 - Neem oil + ZnO nano particles + Chlorpyrifos and least was found in control . Secondly seeds primed with ZnO (100 ppm) nano particles were found superior in most of seed quality parameters followed by ZnO (200 ppm) nano particles followed by T9 – ZnO (200 ppm) nanoparticles and least was found in T1 - control
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    ThesisItemOpen Access
    Influence of seed treatments on quality of different aged seeds of barley (Hordeum vulgare L.)
    (CCSHAU, Hisar, 2021-08) Chhillar, Rahul; Mor, V. S
    Seed treatment is used to improve germination, field emergence under normal and stressful condition, protects germinating seeds and seedlings against soil and seed borne pathogens/insects, early and uniform establishment and growth which result in direct seed yield through its impact on seed quality and vigor of the crop plants. Present study was conducted during 2019-2021 in the laboratories and research farm of the Department of Seed Science and Technology, Chaudhary Charan Singh Haryana Agricultural University, Hisar. To study the influence of seed treatments on quality of different aged seeds of barley (Hordeum vulgare L.). The efficacy of treatments for vigour and viability of barley seed was tested in laboratory and field trials using fresh seeds, one year old seeds and two year old seeds. It was found that seed treated with Azotobacter + Phosphate solubilizing bacteria enhanced the better seed quality in terms of all parameters of fresh as well as of old seed lots of barley, and Chlorpyrifos showed negative effect on seed quality in various combinations. It is also concluded that enzymatic activities of the catalase, POX and SOD is enhanced by application of biofertilizers on barley seeds During natural ageing, standard germination, test weight, seedling length, seedling dry weight, vigour indices, speed of germination, seedling establishment and field emergence index decreased significantly and progressively with the ageing period although, after seed treatment with Azotobacter + Phosphate solubilizing bacteria in natural aged lot were improved in respect of all parameters as compared to other treatments but still the performance of old seed lot was very low with all given seed treatments. So we can recommend that always use fresh seed for sowing purpose to maintain the better plant stand in the field and biofertilizers enhanced the seed quality whereas, insecticides retard the seedling growth
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    ThesisItemOpen Access
    Effect of nutrients spray on seed yield and quality of mungbean (Vigna radiata L. Wilczek) during summer season
    (CCSHAU,HiSAR, 2021-07) Shivani; Jakhar, S. S
    The seeds were treated with foliar spray of nutrients. The experiments consists of nine treatments viz., control, water spray @ 500L/ha, urea @1 and 2%, zinc sulphate, NPK @1 and 2%, sulphate of potash and urea phosphate on two varieties of mungbean i.e., MH 421 and MH 318. The present investigation was carried out in field and laboratory to meet out the objectives of research. In the field, both the varieties were sown and sprayed with nutrients at 30 DAS and 50DAS. After harvesting, seeds were treated with aluminium phosphide to prevent insect attack. The NPK treated seed of both the varieties resulted better performance in seed yield and quality parameters such as germination, mean emergence time, number of pods, speed of germination, seedling length, seedling dry weight, vigor indices, emergence index and seedling establishment as compared to control. NPK @ 2 % and ZnSO4+ urea showed significant higher values for all the seed yield and quality parameters which was followed by sulphate.of potash and urea @ 2%. The increase in yield of both varieties was recorded 25 per cent and15 per cent. Similarly, the standard germination was increased 6.5 per cent and 2.6 per cent in variety MH 421 and MH 318 respectively.
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    ThesisItemOpen Access
    Seed quality assessment in naturally aged and primed seeds of Barley (Hordeum vulgare L.)
    (CCSHAU, Hisar, 2021-09) Kurubar, Siddu Appasaheb; Bhuker, Axay
    Seed is a carrier of genetic constituents which are incorporated by the breeder. After the physiological maturity seed starts deteriorating and eventually loses its quality. For uniform and optimum plant population it is necessary to maintain the seed quality. Storage containers play a crucial role in maintaining the seed quality during the storage. Seed priming is proven technique in enhancing the seed quality during post-harvest period and it is used for mid-storage treatments for correcting vigour loss during the storage. Hence, the present study was undertaken to assess the effect of storage containers on naturally aged and primed seeds of six barley varieties viz., BH 946, BH 902, BH 393 (six rowed varieties), BH 885 DWRB 101 and DWRB 92 (two-rowed varieties). The seeds of all the six varieties were stored in cloth bag (ordinary) and polythene bag (moisture prof) containers for 9 months under ambient conditions. Nine months naturally aged seeds and artificially aged seeds (for 48,72 and 96 hours) were primed with GA3 (50, 100 and 150ppm), ethanol (1%,3% and 5%) and ZnO NPs (50,100 and 200ppm) at 250 C for 24 hours in order to assess the effect of priming. The results revealed that polythene bag maintained seed moisture content constant throughout the storage period which resulted in better storability. All the seed priming treatments enhanced the seed quality as well as enzymatic activities of the seeds except ethanol 5%. ZnO 100ppm and GA3 100ppm enhanced the seed quality at maximum extent in both naturally and artificially aged seeds. Priming with Ethanol at lower concentration i.e.,1 and 3% also increased the seed quality but at higher concentration i.e.,5% caused the toxic effect on aged seeds. Hence, it is concluded that polythene bags (with thickness >700gauge) are more suitable to maintain the seed quality of barley as compared to cloth bags. DWRB 101 and BH 946 performed better in all the seed quality parameters indicating highly vigourous cultivars which can be used for further breeding programmes. Seed quality of barley seeds can be enhanced through priming with ZnO 100ppm and GA3100ppm