Browsing by Author "Najam Waris Zaidi"

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Comparative Study of Trichoderma BHU-1 Mediated Drought Alleviation of Susceptible and Tolerant Rice Cultivars
(Journal of Pure and Applied Microbiology, 2025) Ram Nandan Yadav; Renu Yadav; Najam Waris Zaidi; Harikesh Bahadur Singh; Prashant Bisen; Md Mahtab Rashid; Sudheer Kumar Yadav
The study investigated Trichoderma-mediated morphological and biochemical responses in droughtsusceptible and tolerant rice cultivars, namely IR-64 and DRR-44, under drought-stressed and normal conditions. Various morphological and biochemical parameters were recorded 30, 60, and 90 days after transplanting. The shoot length was insignificant, while the root length was significant in droughtsusceptible DRR-44 compared to non-stressed plants. The number of roots was also significant in Trichoderma BHU-1 treated plants of both cultivars. Proline content was more substantial in drought susceptible cultivars than tolerant and similarly, lignin, TPC, PAL, and PO activities were higher in Trichoderma BHU-1 treated drought-stressed plants than in normal ones. The result revealed that Trichoderma BHU-1 treatment modulates an increase in root length, shoot length, and the total number of tillers and roots under drought conditions. It also maintained the level of phenolics in plants by upregulating the pathway thereby helping the plant to sustain drought. © The Author(s) 2025.
Effect of trichoderma and hydrogel on growth, yield and yield attributes of direct seeded rice (Oryza sativa) under rainfed condition
(Indian Council of Agricultural Research, 2019) Avijit Sen; Ram Kumar Singh; Deshraj Yadaw; Puja Kumari; V.K. Srivastava; Pravin Kumar Upadhyay; Ardith Sankar; Jyotipraksh Mishra; Ajoy Das; Najam Waris Zaidi; Manzoor Hussain Dar
A trial was conducted both in field and pot during the kharif season of 2015 at Banaras Hindu University, India to study the effect of hydrogel in combination with bio-agent on the performance of rice under rainfed condition. The field trial consisting of IR64 and DRR42 and Trichoderma and hydrogel making 10 treatments altogether was laid out in a Randomized Complete Block Design (RCBD) while in case of pot it was a factorial experiment. DRR42 + hydrogel (seed coating)+Trichoderma (seed treatment @ 12 g/kg) recorded higher yield (2.83 t ha -1 ) which was 43.76% higher than control but it remained at par with IR64. In the pot experiment hydrogel (seed coating)+Trichoderma (seed treatment) and hydrogel soil application registered higher RGR, CGR, root length, root weight. Survival of plants after imposition of drought at 60 days after sowing (DAS) was also found to be longer under the same treatments. © 2019 Indian Council of Agricultural Research. All Rights Reserved.
Sheath blight and drought stress management in rice (Oryza sativa) through Trichoderma spp.
(Springer, 2020) Divya Mishra; Rahul Singh Rajput; Najam Waris Zaidi; H.B. Singh
Sheath blight of rice caused by Rhizoctonia solani Kuhn is a major rice diseases worldwide, and cause up to 50% yield losses depending upon its severity. Native biocontrol agents were isolated from rice rhizospheric soil of different region and NADEP compost. Fourteen strains of Trichoderma were isolated and screened in vitro against Rhizoctonia solani causing sheath blight of rice through dual culture technique. Among all tested isolates under in vitro conditions Trichoderma BHU-11, T-4 and BHU-8 showed the maximum inhibition for Rhizoctonia solani (71.48%, 67.28% and 63.89%, respectively). These strains of Trichoderma were also taken for checking drought tolerance in rice crop. Trichoderma strains when applied as seed + root dip treatment showed reduction of disease incidence. It also acted as plant growth promoter and increased the number of tillers/hill, plant height and yield of the crop. Trichoderma alters the drought response including drought avoidance through different morpho-physiological and biochemical adaptations, and enhanced drought recovery. The root colonization by Trichoderma increased the growth of roots and plant productivity. Biochemical studies showed the ability of Trichoderma BHU-11, T-4 and BHU-8 to produce high level phenol and proline contents in Trichoderma treated stress challenged plants and higher accumulation of chlorophyll in Trichoderma treated plants. © 2019, Indian Phytopathological Society.