SCREENING OF POTATO (Solanum tuberosum L.) VARIETIES AGAINST SALINITY STRESS

Abstract

This experiment was performed to screen potato varieties against salinity stress. This study was conducted in the net house of Genetics and Plant Breeding Department at Sher-e-Bangla Agricultural University from December, 2019 to March, 2020. This study was done with ten potato varieties where eight varieties were collected from Tuber Crops Research Centre (TCRC), Agricultural Research Institute (BARI), Gazipur, Bangladesh and other two varieties were collected from Sylhet which are used as local variety. The varieties were BARI Alu-29 ( V 1 ), Pechar Chokh (V 2 ), BARI Alu-72 (V 3 ), Lal Shila (V 4 ), BARI Alu-53 (V 5 ), BARI Alu-25 (V 6 ), BARI Alu-28 (V 7 ) and BARI Alu 36 (V 8 ), BARI Alu-7 (V 9 ) and BARI Alu-73 (V 10 ). Four salinity treatments including T 1 (control), T 2 (5 dS/m), T 3 (10 dS/m), T 4 (15 dS/m) were applied to the varieties. In this experiment completely randomized design (CRD) with three replications were followed. Varieties and salinity treatment influenced singly in interaction of agromorphogenic and physiological traits of potato. Salinity treatment affected almost all traits of potato significantly except dry weight of plant and k

uptake. Higher plant height (55.23 cm) was found in V 5 at T 2 treatment. V 7 showed higher number of leaflets per plant under T 2 and T 3 treatment. V 8 showed higher chlorophyll content value in T 2 , T 3 and T 4 treatments. V 8 also showed lower Na

uptake and V 3 showed higher K + uptake in T 4 salinity treatment. V 3 showed higher proline content with the increase of salinity treatment. From the research findings, it was reported that in case of number of tuber per plant and total weight of yield, V 3

performed better under T 2 , T 3 and T 4 salinity treatments and the variety V 9 also given second highest yield under T 2 treatment. Among all the varieties V 3 performed well as a salt tolerant variety. + +