Correlation among germination and seedling parameters of Brassica juncea under PEG 6000 and NaCl treatments

Abstract

Brown mustard (Brassica juncea L.) has potential for industrial use because of the high erucic acid content of the oil. This study evaluated the association under stress treatments [PEG 6000 (0, –0.2, –0.4, –0.6, –0.8, –1.0 and –1.2 MPa) and NaCl (0, 5, 10, 15, 20, 25, 30 and 35 dSm– 1)] among germination and early seedling growth of B. juncea originated from Izmir, Turkey. Germination and seedling parameters as ISTA method to evaluate eleven seed parameters viz. germination percentage, final germination percentage, mean germination time, germination index, root length, shoot length, root shoot ratio, root length reduction, shoot length reduction, seedling fresh weight, seedling dry weigh. Statistical techniques correlation between different parameters both NaCl and PEG 6000 were analysed. Results exhibied that positive and significant correlation was noted among several germination and seedling parameters subjected to stress excluding root–shoot ratio that showed negative correlation with shoot length under the influence of both stress. Similarly, significant and negative correlation of mean germination time was detected with germination speed and final germination percentage. The objective and aim of this study was to determined correlation coefficients among studies traits of B. juncea under PEG 6000 and NaCl treatments. Such information about differential responses over time may be useful for identifying critical parameters for screening this species. The present research can help to plant breeders and agronomist in deciding the selection criteria.

Keywords

• Brown mustard
• Salt and drought stress
• Correlation coefficient

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