National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
In the present investigation an attempt has been made to assess germination and seed vigour of six bitter gourd genotypes under PEG induced water stress condition. The experiment was laid out in a completely randomized design with three replications. Water stress at laboratory was induced through PEG 6000. The optimum stress levels were maintained at 0, -0.05, -0.1, -0.2, -0.4 & -0.6 MPa. Observations were recorded on germination count, root length, shoot length, seedling length, and seed vigour indices. Significant variation was observed among the bitter gourd genotypes in respect of germination count under normal as well as stress conditions. Under normal condition germination count varied from 65.3 to 90.0%; seed vigour index-I of the genotypes ranged from 1294.90 (V1) to 2275.20 (V6) with a mean of 1768.18; seed vigour index-II was maximum in V6 (9.99) and minimum in V1 (6.60). Under water stress condition, the mean germination count at -0.05, -0.1, -0.2, -0.4 & -0.6 MPa was 72.85 %, 61.38 %, 54.58 %, 46.08 % and 38.25 % respectively. The mean SV-I value at -0.05, -0.1, -0.2, -0.4 & -0.6 MPa was 1307.33, 868.94, 721.76, 547.62 & 401.03 respectively. These findings indicated that germination and seed vigour of bitter gourd genotypes decrease with the increase in water deficit.
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