Impact of Salt Stress (NaCl) on Seed Germination, Photosynthetic Pigments of Green Gram Cultivars of Co6 and Co8  

K. Krishna Surendar , S.V. Varshini , R. Deepa Sankari , N. Susithra , S. Kavitha , M. Shankar
Vanavarayar Institute of Agriculture, VIA, Pollachi-642 103, India
Author    Correspondence author
Plant Gene and Trait, 2014, Vol. 5, No. 6   doi: 10.5376/pgt.2014.05.0006
Received: 22 May, 2014    Accepted: 30 May, 2014    Published: 13 Jun., 2014
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Preferred citation for this article:

Surendar et al., 2014, Impact of Salt Stress (Nacl) on Seed Germination, Photosynthetic Pigments of Green Gram Cultivars of Co6 and Co8, Plant Gene and Trait, Vol.5, No.6 40-44 (doi: 10.5376/pgt.2014.05.0006)

Abstract

Investigations were undertaken to study the impact of salt stress (NaCl) in concentrations on seed germination and seedling growth of Green gram (CO5, CO6). Seed germination percentage, seedling growth characters, physiological and bio-chemical parameters were estimated at 10 days after sowing in Petridish. The stress was imposed during sowing time with different concentrations viz., 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 ppm. The increased seed germination percentage was noticed in control (distilled water) treated seeds and very less reduction was observed in T2 to T5 treatments in the range of 11.2 percent over the T11. The highest reduction percent of 35% were observed in T10, T11, & T12 treated seeds. Growth parameters of shoot length and root length were significantly reduced due to NaCl treatments. However among the treatments, T1- T5 showed very less reduction 15 percent than the other treatments, whereas T6-T11 recorded highest reduction of 27 percent over control. There was also significantly maintained in the chlorophyll ‘a’ ‘b’ and total chlorophyll content of the seedlings in the T1-T5 treatments as 12.6 %, with lesser reduction over the other treatments. The highest reduction of 25.3 percent was noticed in T6-T12 treated seedlings.

Keywords
Salt stress; Seed germination; Shoot and root length; Photosynthetic pigments; Green gram
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