کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5769317 | 1628773 | 2017 | 5 صفحه PDF | دانلود رایگان |
- 100 mg Lâ1 TIBA promoted dwarfing of tea plant and inhibited new shoot length.
- 100 mg Lâ1 TIBA promoted effective lateral branch formation.
- 100 mg Lâ1 TIBA may enhance the photosynthetic performance of colony leaves.
- 100 mg Lâ1 TIBA treatment increased spring tea yield of tea plants.
- It is suggested to spray 'Longjing 43â² with 100 mg Lâ1 TIBA after heavy pruning in summer.
2,3,5-Triiodobenzoic acid (TIBA) is a safe and efficient synthetic auxin transport inhibitor. The mature tea plants of the cv. Longjing 43 were used in this study. The foliar portion of tea bushes were sprayed with different concentrations (50, 100, or 150 mg Lâ1) of TIBA after heavy pruning (i.e., after two to three leaves grew out in late May). The effects of TIBA on the growth of the new shoots and lateral branches were explored. After 5 months, treatments with 50, 100, and 150 mg Lâ1 TIBA decreased plant height by 13.5%, 22.9%, and 23.3%, respectively; TIBA at 50, 100, and 150 mg Lâ1 decreased the number of lateral branches by 18.0%, 18.6%, and 8.4%, respectively. Treatments with 100 mg Lâ1 TIBA increased the length of lateral branches by 34.3%; 50 and 100 mg Lâ1 TIBA increased the lateral branch diameter by 9.45% and 12.46%, respectively. After 2 months, 50 and 100 mg Lâ1 TIBA did not significantly affect photosynthetic rate in comparison with the control. Furthermore, 100 mg Lâ1 TIBA significantly increased spring tea yield by 19.3% in comparison with the control. In conclusion, the treatment of 100 mg Lâ1 TIBA can promote dwarfing, and formation of effective lateral branches, and spring tea yield. It is suggested to spray 'Longjing 43â² tea plants with 100 mg Lâ1 TIBA solution after heavy pruning in summer (i.e., after two to three leaves grew out in late May).
Journal: Scientia Horticulturae - Volume 225, 18 November 2017, Pages 676-680