TANGGAPAN TANAMAN TOMAT (Lycopersicon esculentum Mill.) TERHADAP SALINITAS
| Main Authors: | , WELIANTO BOBOY, , Prof. Dr. Ir. Didik Indradewa, |
|---|---|
| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2012
|
| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/97651/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=54268 |
Daftar Isi:
- Salinity negatively affects to the physiological traits, growth and yield of crops. It can be reduced by planting adaptive plants as a method to overcome. The research were to study the effects of saline water gradient to three cultivars of tomato to its physiological traits, growth and yields, and to determine the level and mechanism tolerance of the three tomato cultivars grown in saline conditions. Split plot was used with three replications in each treatment. The main-plots were three levels saline water gradient: 0 dS.m -1 (control), 2.5 dS.m -1 (a low level), and 5.0 dS.m -1 (a moderate level). The sub-plots were three different tomato cultivars: Rempai, Royal and Permata. The result showed that saline water gradient (2.5 and 5.0 dS.m -1 ) reduced the physiological traits, growth and yield of the three tomato cultivars. The decrease of growth and yields in Rempai was lower than two other cultivars, Royal and Permata, due to the slightingly and moderately saline water gradient. In salinity stress, Rempai was lower in the stress sensitivity indices, and higher in the stress tolerance and yield stability indices, and it indicated that Rempai was more resistant than Permata and Royal against to salinity stress. The adaptation strategies of three cultivars of tomato in saline conditions were avoidance (reducing transpiration rate and stomata conductivity, thickening leaves, and increasing root-shoot and K/Na ratio) and tolerance (synthesis proline and sucrose).