Effect of growth regulators on growth, yield and ions accumulation of rice (Oryza sativa L.) under salt stress
Year: 2006
Type: article
Abstract: A pot experiment was conducted in glass-house to assess the role of Abscisic acid (ABA), Benzyleadenine (BA) and Cycocel (CCC) on growth, yield, ion accumulation and proline production in three rice cultivars viz, Super Basmati, Shaheen Basmati (fine cultivar) and IR-6 (coarse cultivar) differing in yield. Seeds of each cultivar were soaked prior to sowing with ABA and BA each at 10-5 M and CCC 10-6 M for 24h. Salinity of 5dS/m was developed by adding NaCl salt in five equal splits daily to fifteen days old plants of all the cultivars. Plants were harvested two weeks after salt treatment. Shoot and root dry weight decreased at salinity stress as compared to control, however ABA, BA and CCC treatment caused a substantial increase in shoots and root dry weight over that of salt alone. Salt treatment increased the level of Na+ and Cl- but decreased K+ content in flag leaves as well as in roots of three rice cultivars. ABA and CCC treated plants showed significant decrease in Na+ content but increased K+ content in flag leaves of all the cultivars at salt stress. ABA was more effective to increase Ca2+ content in flag leaf as well as in roots of all the cultivars as compared with BA and CCC. The levels of ions (Na+, K+, Ca2+ and Cl-) were relatively higher in roots than in flag leaves, however higher accumulation of K+ and Ca2+
Authors: Asghari Bano, Muhammad Salim
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2775163352