Vol. 8, Issue 5 (2020)
Biotic and abiotic stress management in vegetable crops through grafting
Author(s): L Pugalendhi, H Usha Nandhini Devi and G Karthikeyan
Abstract: The unprecedented changes in the climate pose threat to the global food security. Achieving yield stability along with tolerance to biotic and abiotic stress is the need of the hour. Vegetable crops exhibit a yield reduction of upto 60-70% due to biotic factors like soil-borne pathogens and nematodes and abiotic factors like salinity, drought, flooding, water logging, heavy metal contamination, suboptimal temperature and nutrient deficiencies, and toxicities. Improving the yield potential by conventional breeding strategies faces challenges since it involves high inputs for the production, thereby not minimising the yield gap. Grafting is considered as a best alternative to traditional breeding techniques for imparting resistance to various biotic and abiotic stresses in vegetable crops. Grafting of vegetable crops onto tolerant rootstocks plays an important role in controlling soil-borne diseases like Fusarium wilt, Verticillium wilt and Root Knot Nematode. The desirable traits of rootstocks may be transferred to mitigate the adverse impact of climate change on productivity and quality of vegetables crops. The influence of rootstock on plant performance outweighs that of the scion under conditions of biotic abiotic and stress. Successful grafts in cucurbitaceous and solanaceous vegetable crops have been obtained worldwide. Limited land availability forces growers to cultivate crops in problem soils like salinity, alkalinity, heavy metals etc., which results in expression of various physiological and nutritional disorders in plants. This can be overcome by grafting vegetables to rootstocks showing tolerance to adverse soil conditions. Besides, grafting also focuses in enhancing yield without altering fruit quality and scion-rootstock compatibility/incompatibility.
Pages: 2268-2271 | 993 Views 506 Downloads
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How to cite this article:
L Pugalendhi, H Usha Nandhini Devi, G Karthikeyan. Biotic and abiotic stress management in vegetable crops through grafting. Int J Chem Stud 2020;8(5):2268-2271.
