Surinder Singh BISHT, Rishi K. BEHL, Chander KISHOR, Rajesh Kumar ARYA

In Vitro and In Vivo Screening of Rice Genotypes for Yield Attributes and Proximate Analysis in Relation to Salinity Tolerance

An experiment on in vivo and in vitro screening of rice germplasm for salinity tolerance was carried out to screen rice genotypes. The results revealed that all the genotypes were affected by the increasing salinity levels but there were genotypic differences also. Among morphological characters almost all the characters showed reduction with increasing salinity levels except proline content, sodium content and chloride content. Sodium and Potassium content increased tremendously with increasing salinity levels where as there was significant reduction in K/Na ratio. On the basis of this the genotype CSR 23, CSR 36, HKR 47 and F1s viz. CSR 36 x HKR 126, CSR 36 x IR 64, CSR 36 x HKR 127 and HKR 126 x IR 64 expressed to be salt tolerant whereas CSR 23 x CSR 36, IR 64 x HKR 127 and HKR 47 x HKR 127 as sensitive to salinity. The salinity tolerant genotypes may be used in rice breeding to develop elite genotypes.

Keywords:

Rice, salinity tolerance, in vitro, in vivo, screening,

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