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Uttarkāshi, India

Patel P.R.,Sardar Patel University | Kajal S.S.,Ashok and Rita Patel Institute of Integrated Study and Research in Biotechnology and Allied science | Patel V.R.,Sardar Patel University | Patel V.J.,Krishi Vigyan Kendra ICAR | Khristi S.M.,Ashok and Rita Patel Institute of Integrated Study and Research in Biotechnology and Allied science
Brazilian Journal of Plant Physiology | Year: 2010

Soil salinity is a major limitation to crops production in many areas of the world. The present study reports the impact of salt stress on seeds germination, plant growth parameters and leaf ions accumulation in three cowpea [Vigna unguiculata (L.) Walp] Indian cultivars: Akshay-102, Gomti vu-89 and Pusa Falguni. The electrical conductivity (EC) of the soil was 0.75 dS m-1 and the NaCl treatments increased it to 2, 4, 6, 8 and 10 dS m-1. Germination percentage was recorded 10 days after sowing, while shoot and root dry weights were measured in 45 days old plants. Leaf ion concentrations for Na+, K+, Ca2+, Cl-and proline content were determined. The results showed that the germination percentage of seeds was highly affected by salinity in all cultivars in all salinity levels from 2 to 10 dS m-1. On the other hand, height and weight of all cultivars were less affected by the salt stress. Only at 10 dS m-1 EC, significant reduction in plant height and root length could be found for all three cultivars. Salinity induced a significant increase in Na+, Cl-and proline concentrations, while reduced the accumulation of K+ and Ca2+ in leaves of all the cultivars. Moreover, the tolerance difference between the cultivars was better observed at the lowest levels of salt stress, as reveled in the measurements of K+/Na+ ratio and proline content. In conclusion, this study characterizes Akshay-102 as the most tolerant cultivar and establishes the measurements of germination capacity, K+/Na+ ratio and proline accumulation as an important features to be explored in programs for selection and/or development of tolerant cultivars which make possible the utilization of waste saline water as well as the cultivation of vast areas of the tropical world affected by salinity.

Singh S.P.,Krishi Vigyan Kendra ICAR | Sachan V.K.,Krishi Vigyan Kendra ICAR | Nautyal P.,Krishi Vigyan Kendra ICAR | Tiwari R.K.,Krishi Vigyan Kendra ICAR | Joshi H.C.,Krishi Vigyan Kendra ICAR
Indian Journal of Agricultural Sciences | Year: 2013

Pleurotus djmore and Pleurotus sajor-caju were cultivated on different plant substrates in District Uttarkashi, Uttarakhand. P. djmore fruits well at 20 - 300C and P. sajor-caju at 18 -280C. Plant wastes or substrates, viz. wheat straw, hybrid Napier, maize cob shell, finger millet waste, blackgram waste, lentil kernel, and chopped mustard straw were used as alternative substrates for the cultivation of P. djmore and P. sajor-caju. The biological efficiency (BE) obtained from each substrate was more than 90%. The highest yields of P. djmore (1180 g/500 g dry substrate, BE 118%) and P. sajorcaju (1020 g/500g dry substrate, BE 102%) were obtained on wheat straw substrate. Others also proved to be good substrates for mushroom cultivation. Economic profitability analysis showed that Pleurotus mushroom cultivation is income-generation entrepreneurship that woman self help group and unemployed youth can easily adopt. Mean cost benefit ratio of 1:4.6, 1:3.7 and 1:2.2 were obtained at 100%, 80% and 60% of experimental yields.

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