The Effect of Hormone Types, Concentrations, and Treatment Times on the Rooting Traits of Morus ‘Yueshenda 10’ Softwood Cuttings

Abstract

Enhancing the capacity of fruit trees to propagate via cuttings is an important endeavor for the high-quality development of the fruit industry. Optimizing the conditions for the cutting propagation of mulberry seedlings is an important factor that influences the industrial production of this plant; however, the currently used mulberry breeding technology system is not mature. In this experiment, an orthogonal design was used to intercept semi-woody shoots of Yueshenda 10 as cuttings and set different hormone concentrations (200, 500, 800, and 1000 mg/L), different hormone types (NAA, IBA, IAA, and ABT-1), and different soaking times (10, 30, 60, and 120 min) for cuttings. The effects of the three factors on the rooting of mulberry cuttings were investigated by soaking the cuttings in clean water for 10 min as a control. The results showed that the primary and secondary order of the three factors affecting the rooting rate of cuttings was hormone concentration > hormone type > soaking time, and the concentration of exogenous hormones had a significant impact on all rooting indicators (p < 0.05). In addition, the rooting rate (66.24%), average number of roots (7.54 roots/plant), and rooting effect index (4.23) of Yueshenda 10 cuttings reached the optimal level when soaked with 800 mg/L ABT-1 for 30 min. The longest root length (10.20 cm) and average root length (4.44 cm) of cuttings achieved the best results when soaked with 800 mg/L NAA for 60 min and 500 mg/L NAA for 30 min, respectively. On balance, it is considered that the preferred solution is to soak the cuttings of Yueshenda 10 with 800 mg/L ABT1 solution for 0.5 h.

Propagación de plantas de cannabis sativa (L.) mediante esquejes y uso de fitorreguladores auxínicos

“…Durango and Humanez (2017) indicate that as auxin concentrations increase, the number of roots decreases. Similarly, Sun et al (2023) observed the same pattern as the NAA and IBA concentration gradually increased within the range of 0~200~500~800 mg L -1 ; the rooting rate, average number of roots, maximum root length and rooting efficiency index initially increased followed by a decrease when applying a concentration of 1,000 mg L -1 . Salinas et al (2022) indicate that the spatial pattern of auxin accumulation at the tissue level may be due to a combination of localized auxin biosynthesis and nonpolar (in areas of high auxin concentration) and polar transport through cells.…”

Perbandingan Efektivitas Zat Pengatur Tumbuh Organik dan Anorganik dalam Mendukung Pertumbuhan Stek Kopi Robusta

“…Menurut Upe (2019), tanaman memerlukan ZPT dalam konsentrasi yang sesuai untuk pertumbuhannya. Ditambahkan oleh Sun et al (2023) bahwa ZPT efektif dalam konsentrasi tertentu, konsentrasi yang terlalu rendah atau terlalu tinggi membuat ZPT bekerja tidak efektif.…”

“…Peran penting natrium nitrofenol yang merupakan ZPT anorganik dan ekstrak bawang merah yang merupakan ZPT organik yang keduanya mengandung auksin berperan penting dalam meningkatkan pertumbuhan tanaman. Hasil penelitian Sun et al (2023) menunjukkan bahwa bahan auksin mudah terserap ke dalam jaringan tanaman sehingga mempercepat aliran protoplasma menunjang pertumbuhan akar stek. Gomes et al (2020) menambahkan bahwa proses pembentukan akar merupakan faktor terpenting yang mendorong pertumbuhan dan pelestarian stek, karena akar tersebut menyerap unsur hara dari dalam tanah.…”

“…Selanjutnya dikatakan bawa auksin mempunyai beberapa fungsi dalam menunjang kehidupan tanaman termasuk primordia akar. Sun et al (2023) menambahkan auksin memicu pembelahan sel sehingga diperlukan untuk pembentukan akar. Bobot kering akar dipengaruhi oleh jumlah akar yang tumbuh.…”

Rooting Hormone and Substrate Effects on Mini-Cloned Mulberry (Morus indica)

“…After auxin treatment the apical shoot cuttings were planted in polybags containing different rooting medium. The 1/3 basal cut portion was inserted in different rooting media using sticking technique [17]. In order to make complete wetting on entire cut surface, holes were made in each bag to avoid the damage of cambium and to prevent the removal of rooting hormone.…”