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Indian Journal of Horticulture
Year : 1997, Volume : 54, Issue : 4
First page : ( 283) Last page : ( 287)
Print ISSN : 0972-8538.

Screening of germplasm of citrus rootstocks for salinity tolerance

Singh Awtar, Srivastava A.K., Dass H.C., Vijayakumari N.

National Research Centre for Citrus, Seminary Hills, Nagpur 440 006

Summary

Twenty citrus rootstocks were screened in a pot study for their salinity tolerance through varying chloride levels (0, 300, 600 and 900 ppm Cl through NaCl) in irrigation water. The susceptibility/tolerance of the rootstocks to salinity was evaluated on the basis of response to plant height, number of healthy leaves/plant and root volume/plant, days taken for appearance of leaf chloride toxicity symptoms substantiated by water soluble Cl content of soil. The rootstocks were divided in four major groups on the basis of their salt tolerance viz., (1) highly susceptible: Rangpur lime (California) and Swingle citrumelo, (2) susceptible: Rich 16-6, Flying Dragon, C-35, C-32, C. macrophylla, Rangpur lime (8784, Tirupati and Brazilian) and Chase rough lemon, (3) tolerant: Cleopatra mandarin (Grebstan and Narana), Schaub rough lemon and Rangpur lime (Texas) and (4) highly tolerant: Cleopatra mandarin (Tirupati, Coorg and Morocco). Strainal variability within rootstock groups was observed for salinity tolerance.

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