Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

ROLE OF SOIL pH ON GROWTH RESPONSE TO AL-TOLERANT AND AL-SENSITIVE WHEAT SEEDLINGS (Pages : 11 - 15)

Soil pH regulates poor growth response on wheat seedlings. An open-air plant growth experiment was conducted to determine soil pH effect on growth response to Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings. Three different types of soil with different pH’s like 5.3, 8.3 and 8.7 were used in this study. Both ET8 and ES8 were near- isogenic wheat lines that differ by ALMT1 gene were compared. This study showed that seedlings emergence and root proliferation increase with the increase of soil pH. Result also showed that two wheat genotypes responded differently irrespective to soil pH. The ET8 seedlings responded better than the ES8 seedling at all pH level. This study suggested that soil pH also involved in Al tolerance mechanisms in addition to soil available extractable Al. This may be due to ALMT1 gene, which is involved in Al tolerance through malate exudation. Download