Author(s):

Vitnor Sushil S, Wagh RS, Pagire Gaurav S, Jadhav GN and Sawant PP

Abstract: An experiment was conducted to study “Assessment of genetic variability of wheat for early establishment under moisture stress condition by using PEG” was carried out at P.G.I. phytotron, Department of Agricultural, Botany, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahmednagar (MS) India during the year 2015-2017. This study was carried out in one experiment. The first experiment was laid out in factorial completely randomized design with three replications involving fourteen wheat genotypes and five PEG concentrations (0, -0.1, -0.3, -0.5 and -0.7 MPa) at phytotron, Department of Agril. Botany, M.P.K.V., Rahuri. The germination percent, seedling vigour, and germination stress index were recorded on 2nd, 4th, 6th and 8th day and the shoot, root and seedling length as well as dry weight were recorded on 8th day. The data revealed significant genetic variation for moisture stress tolerance existed in tested wheat genotypes. The osmotic potential reduced all the recorded parameters. The shoot length affected more than the root length. At -0.1 MPa osmotic stresses condition some genotypes showed increased in shoot and root length. Dry matter accumulation was significantly affected by moisture stress conditions. The maximum germination percentage, seedling vigour and germination stress index was recorded in NIAW-3170 genotype, while the genotypes HD- 2189, NIAW-3173, NIAW-3212 recorded minimum values under higher osmotic stress conditions (-0.5 and - 0.7 MPa). The genotypes NIAW-3170 and NIAW-3166 recorded maximum shoot length and their stress tolerance index under higher osmotic stress condition, The genotypes considering root length and their stress tolerance index, among the all genotypes maximum values were recorded in NIAW- 3170 was recorded maximum mean Root Length followed by NIAW-1415 and minimum Root Length was recorded in NIAW-3166. Among all the genotypes the maximum dry matter was recorded in the genotypes NIAW- 3170 followed by genotypes NIAW- 3220 whereas minimum dry weight was recorded in NIAW-3212 and HD-2189 in the higher osmotic stress coditions.

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