Hormetic studies of 2,4-D in wheat (Triticum aestivum L.) and associated dicotyledonous weeds - Medicago denticulata Willd. and Rumex dentatus L.
| dc.contributor.advisor | Navjyot Kaur | |
| dc.contributor.author | Avneet Kaur | |
| dc.date.accessioned | 2018-11-10T05:31:43Z | |
| dc.date.available | 2018-11-10T05:31:43Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | The present study entitled, “Hormetic studies of 2,4-D in wheat (Triticum aestivum L.) and associated dicotyledonous weeds - Medicago denticulata Willd. and Rumex dentatus L..” was conducted to test the effect of low doses of 2,4-D on wheat and associated dicotyledonous weeds. Low concentrations of 2,4-D failed to accelerate either germination or seedling growth of Triticum aestivum and tested four weed species – Phalaris minor, Avena ludoviciana, Medicago denticulata and Rumex dentatus. The application of 2,4-D herbicide inhibited the seed germination and seedling growth of these weeds in a dose dependent manner with higher concentrations being more inhibitory. Foliar applied 2,4-D in range of 5-20 g ha-1 increased the chlorophyll content index (CCI) and chlorophyll fluorescence (Fv/Fm) values in wheat as compared to control and maximum value of CCI and Fv/Fm was recorded at 20 g/ha 2,4-D showing hormetic effect of 2,4-D at low doses upto flag-leaf stage of crop. Wheat yield and yield attributing parameters were not boosted significantly by low doses of 2,4-D ranging from 5 to 50 g ha-1. No significant difference between control and treated plants at harvest indicates that growth stimulation by low doses of 2,4-D was not sustained over time. The foliar application of 2,4-D at low concentrations ranging from 5-50 g ha-1 did not exert hormetic effects in R. dentatus and M. denticulata as application of different doses of 2,4-D led to a reduction in seed production potential of these weeds. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810083112 | |
| dc.keywords | Hormesis, 2,4-D, germination, weeds, wheat, Triticum aestivum L., Medicago denticulata Willd, Rumex dentatus L. | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 81 | en_US |
| dc.publisher | Punjab Agricultural University, Ludhiana | en_US |
| dc.research.problem | Hormetic studies of 2,4-D in wheat (Triticum aestivum L.) and associated dicotyledonous weeds - Medicago denticulata Willd. and Rumex dentatus L. | en_US |
| dc.sub | Botany | en_US |
| dc.subject | null | en_US |
| dc.theme | Hormetic studies of 2,4-D in wheat (Triticum aestivum L.) and associated dicotyledonous weeds - Medicago denticulata Willd. and Rumex dentatus L. | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Hormetic studies of 2,4-D in wheat (Triticum aestivum L.) and associated dicotyledonous weeds - Medicago denticulata Willd. and Rumex dentatus L. | en_US |
| dc.type | Thesis | en_US |