Salinity Tolerance in F1 Hybrids of Pigeonpea and a Tolerant Wild Relative

Rao, G V S and Johansen, C and Rao, J V D K K and Jana, M K (1990) Salinity Tolerance in F1 Hybrids of Pigeonpea and a Tolerant Wild Relative. Crop Science, 30 (4). pp. 785-788. ISSN 0011-183X

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Salinity in soil or water presents a stress condition to crop plants that is of increasing importance in the sustainability and stability of crop production in the semiarid regions of the world. This study determined the potential for genetic introgression of salinity tolerance from a wild relative, Atylosia albicans (W. & A.) Benth., to cultivated pigeonpea, Cajanus cajan (L.) Millse. A sand culture system was used to grow the salt-tolerant A. albicans, salt-sensitive C. cajan, and their F1 hybrids at various precisely maintained salinity levels. The results demonstrated the feasibility of transferring salinity tolerance from A. albicans to C. cajan. The high level of salinity tolerance in A. albicans was expressed as a dominant genetic factor in both the reciprocal F1 hybrids of this species and C. cajan. The physiological attributes conferring salinity tolerance in A. albicans and the F1 hybrids include Na and Cl retention in the roots and limited translocation to the shoots, high K selectivity, and maintenance of transpiration rate under saline conditions

Item Type: Article
Subjects: Mandate crops > Pigeonpea
Depositing User: Mr B K Murthy
Date Deposited: 12 Mar 2014 05:03
Last Modified: 12 Mar 2014 05:03
Official URL:
Acknowledgement: The authors thank Drs. F.B. Lopez and D.L. Oswalt, ICRISAT, for their suggestions on the manuscript.
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