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20211
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Subject: Seed Science and Technology × Author: Kurubar, Siddu Appasaheb × End date: 2021 × Start date: 2021 × Thesis Type: M.Sc ×
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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