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Subject: Botany × Author: Badhani, Richa × End date: 2024 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Allelopathic effect of five weed species on protein in different varieties of wheat (Triticum aestivum L.)
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2005-08) Badhani, Richa; Rao, P.B.
    Allelopathy is the beneficial or harmful effects of one plant on another plant, both crop and weed species by the release of chemicals from plant parts by leaching, root exudation, volatilization, decomposition and other process in both agricultural and natural ecosystems. Weeds are the plants which are unwanted and interfere with the productivity and yield of cultivated crops. In present study, allelopathic effect of five dominant weed species i.e. Ageratum conyzoides L., Cyprus rotundus L., Phalaris minor L., Polygonum hydropiper L, and Solanum nigrum L. extracts were examined on seed germination, seedling growth (length and dry weight), total protein content and protein profile in ten different varieties of wheat (Triticum aestivum L.) and to identify resistant and susceptibile varieties i.e.,UP-2338,C-306,UP-299,PBW-373,UP-1109,PBW-343,UP-2382,UP-2113,PBW-175,PBW-396. The weed extracts exhibited both inhibitory as well as stimulatory effect on seed germination, plumule and radicle length and dry weight of total seedling in different varieties of wheat. On the basis of per cent reduction, the variety UP-2338 and PBW-396 (o) with P. minor were resistant and C-306 (68.96) with S. nigrum was susceptible. Similarly, UP-2338 (19.92) with S. nigrum was resistant and C-306 (94.34) with A.conyzoides was susceptible in radicle length: PBW- 396 (2.35) with P. minor and UP-299 (83.27) with S. nigrum in plumule length; UP-2338 (9.59) with C. rotundus and C-306 (94.25) with A. conyzoides in radicle dry weight, PBW-373 (0.25) with P. minor and PBW-343 (72.33) with P. hydropiper in plumule dry weight: UP-2113 (3.30) with C. rotundus and UP-1109 (81.18) with P. hydropiper in both seedling dry weight. Thus, these results indicate that the variety UP-2338 was most resistant compared to others. The total protein content was variable in all varieties in control and treatments. It was maximum in PBW-343 (7.8) with A. conyzoides and minimum in UP-1109 (1.3) with P. hydropiper. On the basis of total protein content variety C-306 and UP-299 were resistant and PBW-373 and UP-1109 were susceptible to most of the treatments. Results of similarity index indicate that the extracts of C. rotundus, P. minor and S. nigrum showed similar effect compared to other combinations.