Evaluation of Shoot Cuttings Sources and Planting Distance to Increase the Production of G2 Potato Seed

Abstract

Purpose : The availability of quality potato seed is one of the limiting factors to improve the yield and quality. The aim of this research was to obtain the second generation of potato seeds (G2) with the best growth and yield in combinations the sources of shoot cuttings and planting distance. Research Method : The experiment used a factorial randomized complete block design with two factors: the sources of shoot cuttings (plantlet , G0, G1) and planting distance (80 cm x 15 cm, 80 cm x 20 cm and 80 cm x 25 cm) with three replications and the measured responses are component of growth and yield. Findings : The results showed that the sources of shoot cuttings from G0 produced the highest percentage of growth (97.72%), plant height (81.68 cm), canopy width (33.87 cm), maximum tuber weight per plant (237.27 gram), maximum tuber weight per plot (4.15 kg) and the highest number of tubers per plant (7.88) was obtained from the shoot cuttings sources of plantlet. Planting distance (80 cm x 25 cm) tends to be better for tuber weight per plant (171.31 gram) and tuber weight per plot (2.81 kg). Limitations : By using the shoot cuttings sources from plantlet it requires time to acclimatization. Value : It is very important to evaluate of shoot cuttings sources (plantlet, G0, G1) and planting distance so to accelerate the availability of G2 potato seeds in large quantities and quality, besides, using the shoot cutting sources can reduce production cost. The regulation of planting distance is the most important aspects of potato production.

Potato seed production of G2 from plantlet cutting by setting of population, spacing, and mulch

“…Thus, a large number of tubers of various sizes could reduce the weight per tuber but could increase the tuber weight per plant. This was in accordance with what was stated by [6] and [16] that the assimilation of food which was divided into many tubers caused the tuber weight per unit to decrease.…”

“…Limited land fertility caused differences in cutting populations at close spacing due to resource competition, affecting the number of small and large tubers (efficiency data not shown). Root growth and enlargement of potato tubers required sufficient water and nutrients [16]. The use of mulch on the same number of cutting populations did not affect the tuber weight per plant (Table 3).…”

“…This showed that the narrow planting distance caused the growth of single cutting to not be optimal, producing medium tubers either with or no mulch. [16] reported that on relatively fertile land, using a row spacing of 20 cm could increase the number of tubers rather than of 30 cm, while [17] reported that on less fertile land, a spacing of 30 cm was better than of 20 cm. Based on that, the land in this study was not tested for land fertility, but it was assumed to be in the less fertile land category.…”

Penerapan Inovasi Teknologi Benih Kentang Menggunakan Stek Pucuk Bebas Virus Untuk Mewujudkan Kemandirian Petani Memproduksi Benih Kentang Berkualitas

“…Benih rooted apical cuttings (Gambar 4) merupakan benih berkualitas bebas virus dikarenakan dihasilkan dari planlet yang dikembangkan dilaboratorium hasil pertumbuhan kultur meristem. Dalam produksi benih kentang dapat dilakukan secara seksual (biji) dan aseksual melalui pembelahan umbi benih dan penyetekan pucuk tanaman (Masnenah et al, 2020). Benih kelas ini sangat cepat pertumbuhannya, sehingga umur 3 pekan sudah dapat digunakan untuk produksi benih kentang yang lebih rendah seperti G0, G1, dan G2.…”

Potato seed system in Ethiopia: challenges, opportunities, and leverage points

“…Local relevance is particularly important because potato seed is required in bulk amounts at specific times of the year, whereas inadequate distribution of seeds is also a major obstacle to increasing potato production (Masnenah et al, 2020). The difficulties and related disease dissemination risks associated with transporting high-quality seed potatoes from central locations to rural areas highlight the importance of local seed sovereignty and the need for decentralized production and distribution networks.…”