Response of Seventeen Advance Rice Lines to Salinity and Sodicity
Response of Seventeen Advance Rice Lines to Salinity and Sodicity
Muhammad Khalid Bhatti, Khalil Ahmed*, Ghulam Shabir, Muhammad Irfan, Muhammad Ashfaq Anjum, Muhammad Sarfraz, Amar Iqbal Saqib, Abdul Wakeel, Hafeezullah Rafa, Nadeem Iqbal, Muhammad Qaisar Nawaz, Ghulam Qadir, Muhammad Rizwan and Muhammad Faisal Nawaz
ABSTRACT
Rice is considered one of the most salt sensitive cereals, however, a great genetic diversity exists within rice species for salinity tolerance. Therefore, a study was executed to identify salinity tolerance of seventeen advance rice lines based on of agronomic characters and Na and K contents. Advance lines of rice namely, SRI-22, SRI-23, SRI-24, SRI-25, SRI-26, SRI-27, SRI-28, SRI-29, SRI-30, SRI-31, SRI-32, SRI-33, SRI-34, SRI-35, SRI-36, SRI-37, and SRI-38 were transplanted in cemented block at electrical conductivity of soil extract (ECe) 6 dS m-1 and sodium adsorption ratio (SAR) 25. Data about plant height, shoot fresh/dry weight, root fresh/dry weight, panicle length, No. grain/ panicle, No. of tillers/plant, grain yield and 1000 grain weight were recorded at maturity while Na and K contents were determined in leaves. Overall results revealed that SRI-23 and SRI-28 showed better performance than all other genotypes and produced comparatively better plant height, shoot fresh/dry weight, root fresh/dry weight, 1000 grain weight, grain yield, with low leave’s Na and high K contents. On contrary, the performance of SRI-38 and SRI-24 was poor for these attributes. It was concluded that SRI-23 and SRI-28 were comparatively salt tolerant, while SRI-38 and SRI-24 were salt sensitive genotypes. These findings are significant and could be used to bring the salt-affected area under rice culture.
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