| Autor: |
Siriwan Boonanunt, Krisana Krisanapook, Unaroj Boonprakob, Aussanee Pichakum, Lop Phavaphutanon |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Maejo International Journal of Science and Technology, Vol 8, Iss 02, Pp 190-197 (2014) |
| Druh dokumentu: |
article |
| ISSN: |
1905-7873 |
| DOI: |
10.14456/mijst.2014.27 |
| Popis: |
Peach growing in rainfed areas in the hi ghlands of northern Thailand is suffering from drought conditions, which are becoming increasingly severe every y ear. Drought tol erant rootstocks provide one option to all eviate this problem. Thus, this study aims to find some guides for selecting drought -tolerant peach rootstocks. The local peach vari ety ‘Red Angkhang’ and 3 new hybrid cultivars ‘42047T1’, ‘43060T1’ and ‘43087T2’ were used in this study. Two-y ear-old peach seedlings of each cultivar were grown in pots and divided into 2 groups. The first group consisted of well - watered plants (100% of evapotranspiration) and the second group consisted of water-deficit plants which received only 30% of evapotranspiration for 5 weeks. After that, the water- defi cit peach seedlings were re-watered in the same manner as the well-watered plants f or 2 weeks. Water stress led to a decrease in growth in all cultivars. T h e water- deficit tol erance of Red Angkhang was comparable to that of the new hybrid 42047T1, but the two cultivars used different mechanisms: Red Angkhang responded to water deficit by increasing only the root dry wei ght while hybrid 42047T1 also accumulated sorbitol. The 43060T1 and 43087T2 h y b r i d s were l ess tol erant to water defi cit and responded by decreasing the root dry wei ght with no sorbitol accumulation. From this study , we suggest that root dry wei ght and sorbitol concentration can be used to screen drought tolerant rootstocks in peach in northern Thailand. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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