| Autor: |
Ramoliya, P.J., Patel, H.M., Thakarar, N.K., Pandey, A.N. |
| Předmět: |
|
| Zdroj: |
Tropical Ecology; Winter2004, Vol. 45 Issue 2, p333-336, 4p |
| Abstrakt: |
This article cites a study investigating the effect of soil salinity and water status on the growth of seedlings of Butea monosperm. Previous studies showed that soil salinity causes greater reduction in shoot growth than in root growth. The present study was carried out to understand the adaptive features of B. monosperm which allow it to grow and survive in saline and arid regions. For the emergence and growth of seedlings the top 10 cm layer of soil was collected from a nearby field, air dried and passed through a 2 mm mesh screen. The soil is non-calcareous. sandy loam containing 70.1% sand, 13.7% silt and 16.2% clay. The available soil-water between wilting coefficient and field capacity ranged from 7.6% to 22.4%, respectively. The total organic carbon content was 0.6%, pH 8.1. Immediately after sowing, soils were watered and thereafter watering was carried out on alternate days. Emergence of seedlings was recorded every day, over a period of 40 days. A linear model was fitted to cumulative proportion of seed germination and increasing soil salinity. Thirty four seedlings in each soil salinity treatment were selected for two water treatments. It was noticed that seedlings began to emerge 2 days after sowing and 93% seed germination was obtained over a period of 16 days under control salinity conditions. |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
