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Suitable criteria for drought-tolerant peach rootstocks grown in northern Thailand |
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| รหัสดีโอไอ | |
| Creator | 1. Krisana Krisanapook 2. Siriwan Boonanunt 3. Unaroj Boonprakob 4. Aussanee Pichakum 5. Lop Phavaphutanon |
| Title | Suitable criteria for drought-tolerant peach rootstocks grown in northern Thailand |
| Publisher | Maejo University |
| Publication Year | 2557 |
| Journal Title | Maejo International Journal of Science and Technology |
| Journal Vol. | 8 |
| Journal No. | 2 |
| Page no. | 190 |
| Keyword | peach rootstock,Prunus persica,drought tolerance,root growth,sorbitol accumulation |
| ISSN | 1905-7873 |
| Abstract | Peach growing in rainfed areas in the highlands of northern Thailand is suffering from drought conditions, which are becoming increasingly severe every year. Drought tolerant rootstocks provide one option to alleviate this problem. Thus, this study aims to find some guides for selecting drought-tolerant peach rootstocks. The local peach variety 'Red Angkhang' and 3 new hybrid cultivars '42047T1', '43060T1' and '43087T2'were used in this study. Two-year-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-deficit peach seedlings were re-watered in the same manner as the well-watered plants for 2 weeks. Water stress led to a decrease in growth in all cultivars. T h e water- deficit tolerance 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 weight while hybrid 42047T1 also accumulated sorbitol. The 43060T1 and 43087T2 h y b r i d s were less tolerant to water deficit and responded by decreasing the root dry weight with no sorbitol accumulation. From this study, we suggest that root dry weight and sorbitol concentration can be used to screen drought tolerant rootstocks in peach in northern Thailand. |
