• Title/Summary/Keyword: Seed tuber Weight

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Effect of Altitude and Tuber Weight on the Growth and Yield of Pinellia ternata (Thunb.) Breit (해발고도별 반하 종구 무게가 생육 및 수량에 미치는 영향)

  • Oh, Han Jun
    • Korean Journal of Medicinal Crop Science
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    • v.21 no.2
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    • pp.130-135
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    • 2013
  • The plant growth and yield of Pinellia ternata (Thunb.) Breit. were studied by altitude and tuber weight. The emergence rates in low land area were not different by tuber weights, but it showed earlier emergence date in heavier weight of seed-tuber and low land area. The higher aerial growth such as plant height and number of leaves per plant was the heavier tuber weight in a planting year, but the growth was not different by the weight of tuber at second year after planting. The distribution pattern of tuber size per $m^2$ was not influenced by different seed-tuber weight. The number of harvested tuber was highest at more than 1 g of tuber weight, and followed 1~2 g and less than 2 g. The distribution pattern of fresh tuber yield was not influenced by different altitude and seed-tuber weight. The marketable tuber, 2 g or more, tends to be produced with more than 0.6 g seed-tuber. As the results above-mentioned, it was thought that the high yield was supposed to use seed-tuber over 0.6 g in the fertile soil.

Cultural Practices of Bulbils for Seed-Tuber Production in Dioscorea batatas Decne (마 주아를 이용한 종묘생산 재배기술)

  • Shin, Jong-Hee;Park, Sang-Gu;Park, Sang-Zo;Lee, Bong-Ho
    • Korean Journal of Medicinal Crop Science
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    • v.14 no.3
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    • pp.163-167
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    • 2006
  • The various cultural practices of bulbils were tested for seed tuber production in Chinese yam (Dioscorea batatas Decne.). To obtain amount of seed tuber, yam bulbils were sowed from early April to early May. The late sowing reduced average tuber weight, and consequently the amount of small tubers less than 20g increased highly. The optimum seeding rate of bulbils was 200 kg/10 a for production of seed-tubers. The average tuber weight was decreased according to increasing of seeding rate, so the amount of small tubers among total harvested tubers increased greatly at high seeding rate. Tuber size was affected by bulbil size. Seeding of the larger size bulbils result in increased sprouting rate, each tuber weight and tuber yield per unit area.

Effect of Seed Potato Size on Plug Seedling Growth and Field Performance

  • Kang, Bong-Kyoon;Kang, Young-Kil;Ko, Mi-Ra
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.46 no.2
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    • pp.121-124
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    • 2001
  • Potato (Solanum tuberosum L.) tubers of 10, 20, 30, 40, and 50 g were planted in plug trays with vermiculite-based root medium on 10 August 2000 and grown for 15 days in a glasshouse to determine the effects of mini-tuber size on plug seedling growth and field performance of plug seedlings. For a control, common potato tubers weighing 50 g were also planted. As size of seed tubers planted increased from 10 to 50 g, seedling height decreased from 24.6 to 20.0cm while shoot number per seedling increased from 2.0 to 3.5, main stem diameter from 4.3 to 6.1mm, and fresh weight of root + top from 9.3 to 19.4 g/seedling. At 90 days after transplanting plug seedlings, the total number of tubers per plant increased from 3.62 to 4.72, average tuber weight from 62.9 to 72.8g, and total tuber yield 20.5 to 23.6 t/ha with increase in seed tuber size. Plug seedlings raised from 50g tubers produced 22% more tubers per plant and had 21 % higher>80g tuber yield than the directly planted potatoes.

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Mass Propagation of Plug Seedling using Stem Cutting and Their Tuber Yield in Potato

  • Park, Yang-Mun;Song, Chang-Khil;Kang, Bong-Kyoon;Kim, Dong-Woo;Ko, Dong-Hwan
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.44 no.3
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    • pp.201-206
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    • 1999
  • For the mass production of plug seedlings in cultivar ‘Dejima’ potato (Solanum tuberosum L.) the optimal apical cutting diameter for rooting and rapid multiplication of stem cuttings in hydroponics were determined. In addition, the best planting date was predicted to increase tuber yield of plug seedlings at fall cropping in Cheju-Do, Korea. Days to initial rooting decreased as the cutting diameter was reduced. Plant height, leaf number, root length and root weight per plant were favorable as the cutting diameter was small. The ideal cutting diameter was 1-2 mm in this experiment. In the hydroponic cultures, the Japanese standard (JS) nutrient solution was the most effective for multiplication of stem cuttings. It was able to propagate more than 20 times a month from a single mother plant. Viability of plants, which were derived from plug seedlings using stem cuttings, was excellent when transplanted to the field. The number of tubers and tuber yield in both of the plug seedlings and seed potato planting plots were high when planted on 25 August. The number and yield were reduced when planted on 15 August, 5 September and 15 September. The degree of decrease of tuber yield in the plug seedling planting plot however, was lower than that of seed potatoes when the planting date was late. In the case of small tubers (under 30 g), the number of tubers and tuber yield were evidently increased in the seed potato tuber planting plot; the yield of large tuber (over 80g) in the plug seedling planting plot was higher than that of the seed potato. The total tuber yield per plant in the plug seedling planting plot was less than that of the seed potato; therefore, in order to increase tuber yield it was necessary to increase field plant density.

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Growth and Yield of Double Cropping Potatoes Produced Using Seed Tubers of Different Types and Sizes

  • Park, Hyun Jin;Lee, Gyu Bin;Park, Young Eun;Cho, Ji Hong;Choi, Jang Gyu;Seo, Jin Hee;Cheon, Chung Gi;Chang, Dong Chil
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.66 no.4
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    • pp.375-382
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    • 2021
  • For stable cultivation in double cropping, it is important to use potato (Solanum tuberosum L.) cultivars with a short dormancy period of 50-70 days and plant seed tubers of appropriate type and size. An experiment was conducted during 2018-2019 to investigate the effects of seed tuber type and size on growth and yield performance in double cropping. Whole tubers of three sizes (10-20 g, 30-40 g, and 50-60 g) and conventional cut tubers weighing 30-40 g from three cultivars with different dormancy periods, namely 'Daeji' (40-60 days), 'Eunsun' (50-60 days), and 'Saebong' (50-80 days), were planted, and their field performance was compared. Regardless of the cultivar, the increase in the whole tuber weight up to 30-40 g led to fast emergence, thereby increasing ground cover rate, shoot growth rate, and tuber growth rate, which ultimately improved tuber yield by 33-54%. Comparing the whole and cut tubers, 'Daeji' and 'Eunsun' showed similar growth and yield performance; as such, the performance of whole tubers weighing 10-20 g was comparable to that of cut tubers weighing 30-40 g. However, 'Saebong', a cultivar with relatively long dormancy period, performed better with cut tuber than with whole tubers. Based on these results, we recommend the use of whole tubers weighing over 30 g for double cropping. Further studies to break tuber dormancy are warranted in cultivars with relatively long dormancy periods (50-80 days), such as 'Saebong'.

Effects of Seed-piece Size and Seed-piece Number Per a Hydroponiclly Grown Mini-tuber on Growth and Yield of Potato (감자의 양액재배 소괴경의 절편크기 및 절편수에 따른 생육 및 수량)

  • 강봉균;강영길;문현기;송창길;김찬우;박정식
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.47 no.6
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    • pp.432-436
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    • 2002
  • This study was conducted in 2001 to determine the influence of seed-piece size (SPS) and number (SPN) per mini-tuber produced by hydroponics on growth and yield of potato (Solanum tuberosum L.). Treatments consisted of the combination of six SPS (3, 5, 7, 9, 11, 13g/seed-piece) and four SPN (whole tuber, and two, three, and four pieces/tuber). Percentage sprout emergence at transplanting was higher for seed pieces weighing 7 to 13 g (83.0 to 85.4%) and for three and four pieces per tuber (85.4 and 84.8%). As SPS were increased from 3 to 9 g/piece, total yields markedly increased from 2,052 to 2,924 kg/10a and seed tuber (31 to 250 g) yield from 1,589 to 2,428kg/10a with no further increase with SPS. As SPN was increased from one to three/ tuber, total yields increased from 1,918 to 2,982 kg/10a and seed tuber yields from 1,422 to 2,579 kg/10a with no further increase with SPN. Average tuber weight increased with SPS (46.3 to 71.5 g/tuber) and SPN (56.5 to 64.9 g/tuber).

Development of Hydroponic Culture System for Seed Tuber Production of Yam (Dioscorea opposita) (씨마 대량생산을 위한 수경재배 조건 연구)

  • Lee Hee-Sun;Kim Hyun-Jun;Park Byoung-Jae;Park Cheol-Ho;Chang Kwang-Jin
    • Korean Journal of Plant Resources
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    • v.19 no.2
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    • pp.232-236
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    • 2006
  • This study was carried out to establish of hydroponic culture system for year-round mass production of yam and for supply of disease-free seed tubers from the superior yam species. There were not difference in tuber weight between 9 hrs photoperiod(640mg) and natural photoperiod(600mg). However, longer photoperiod than 9 hrs such as 12 hrs and 15 hrs decreased tuber weight to 490 and 500g, respectively, which sugested that long photoperiod showed adverse effect for tuber enlargement. Tuber enlargement of Dioscorea opposite according to ionic strength was higher at 50% nutrient of Sanyak's standard solution. The optimal concentration of NAA for the best tuber growth showed at 100mg/L as a 560mg while control showed a relatively lower tuber growth(350mg).

Development of Hydroponic Culture Systems for Seed Tuber Production of Yam(Dioscorea opposita) (씨마 대량생산을 위한 수경재배시스템 연구)

  • Chang, Kwang Jin;Lee, Hee Sun;Kim, Hyun Jun;Park, Byoung Jae;Park, Cheol Ho
    • Journal of Practical Agriculture & Fisheries Research
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    • v.7 no.1
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    • pp.47-54
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    • 2005
  • This study was carried out to establish the hydroponics production method for year-round cultivation of yam and to establish the mass production system of disease-free seed tubers from the superior yam species through water culture. There were no difference in tuber weight between 9 hr photoperiod(640mg) and natural photoperiod(600mg). However, longer photoperiod such as 12hr and 15hr decreased tuber weight to 490 and 500g, respectively, indicating that long photoperiod effects adversely tuber enlargement. Dioscorea opposita which was grown with hydroponics effected markedly tuber enlargement at 50% nutrient of Sanyak's standard solution. Hormone treatment of NAA 100ppm resulted in the best tuber growth(560mg) while control showed a relatively lower tuber growth(350mg).

Development of Recirculating Wick Hydroponic Techniques for Safe Seed Tuber Multiplication of Potatoe (심지 양액재배법에 의한 상위급 씨감자의 안정적 대량생산)

  • Kang Bong Kyoon;Kim Chan Woo
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.49 no.6
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    • pp.447-451
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    • 2004
  • This study was conducted to establish the proper techniques of the recirculating wick hydroponics for safe seed tuber proliferation of potatoes (Solanum tuberosum L. CV. Dejima). To achieve these, several intact tubers (5, 10 and 20 g) and cut seed-pieces (two or four) were treated in wick hydroponic system beds. A polystyrene box (31cm in width, 20cm in height, 51cm in length, and $0.031m^3$ in volume) was placed on a styrofoam hox. Eight wicks $(width\;1.5cm\;{\times}\;length\;40cm) $ were put into each polystyrene hox and the boxes were filled with perlite + peatmoss (1 : 2, v/v) medium. Top fresh weight per plant increased with increasing the tuber size from 10 to 30g/tuber. As the tuber size increases from 10 to 30 g/tuher in case of uncut tuber, the marketable tuber (>5g) production per plant increased from 83.8 to 141.8 g/plant and the marketable tuber (>5g) production per plant of cut tuber was slightly higher than that of uncut treatment. Total tuber yield ranged from 4.16 to $6.56kg/m^2$ and the percentage of seed tubers was greater than $97\%$ for all treatments. These results indicate that seed tuber should be cut to produce large tuber $(\geq10g)$ in the recirculating wick hydroponic system.

Effect of Seed tuber Weight on Growth and Yield in Polygonatum stenophyllum Max (황정종근 크기가 생육 및 수량에 미치는 영향)

  • 최인식
    • Korean Journal of Plant Resources
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    • v.9 no.1
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    • pp.23-29
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    • 1996
  • Chungbuk native Polygnatum stenophyllum Max. for used in this experiment were regional groups that collected at Cheongju and Jecheon, and then classified by seed tuber weights as 15, 30, 45, 60g. Shoot emergency time was faster about $4\sim7$days in Chengju regional group than that of Jecheon. In different seed tuber weights, shoot emergency time was the faster, seed tuber weight was the heavier. All of growth factors such as plant height, stem length and leaf length were worse Cheongju regional group in compared with that of Jecheon but leaf width was not different. Yields per 10a in both of Cheongju and Jechon were 1,600kg. After due consideration to seed tuver cost, approximately 40g is regarded as the most suitable weight for cultivation of Polygnatum stenophyllum Max.

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