The effect of the time and mode of application of gibberellic acid on the growth and yield of potato plants derived from true potato seed

Sari. Tujuan penelitian adalah mengevaluasi pengaruh ethyl methanesulphonate (EMS) terhadap pertumbuhan tanaman kentang Granola dari biji botani dan memperoleh konsentrasi efektif untuk mendapatkan mutan berdaya hasil tinggi. Percobaan dilakukan dalam dua tahap. Tahap pertama dilakukan di laboratorium kultur jaringan BALITSA, Lembang, yang terdiri dari tahap perlakuan EMS pada biji dengan konsentrasi 0,01%; 0,03%; 0,05%; 0,07%; 0,10%; 0,13%; 0,15%; 0,17%; dan 0,20%; selama 3 dan 6 jam, penanaman biji pada media kultur MS, perbanyakan planlet dan pengamatan planlet. Tahap kedua dilakukan di rumah kasa di Pangalengan yang terdiri dari tahapan aklimatisasi menggunakan Rancangan Acak Kelompok dengan 14 perlakuan EMS yang diulang 3 kali dan pengamatan pertumbuhan tanaman. Hasil menunjukkan bahwa EMS menyebabkan penurunan pada daya kecambah. Pengamatan pertumbuhan di rumah kasa menunjukkan tinggi tanaman, jumlah daun, indeks kandungan klorofil, dan berat ubi pertanaman hasil perlakuan memiliki hasil yang lebih rendah dibandingkan kontrol. Konsentrasi EMS 0,07% dengan perendaman 3 jam dan konsentrasi 0,01% dengan perendaman 6 jam menghasilkan genotipe 3D12 dan 6A8 yang memiliki hasil panen tinggi. Kata kunci: kentang, EMS, mutasi, pertumbuhan. Abstract. The aim of the study was to evaluate the effect of ethyl methanesulphonate (EMS) on true potato seed germination and growth of potato Granola also obtained effective concentrations of EMS to produce mutants with high yield. Experiment was conducted in two stages. The first stage was carried out in BALITSA tissue culture laboratory, Lembang which consisted of EMS treatment steps in seeds with concentrations of 0.01%, 0.03%, 0.05%, 0.07%, 0.10%, 0.13%, 0.15%, 0.17%, and 0.20% for 3 and 6 hour; seeds planting on MS culture media; planlet propagation and plantlets observations. The second stage was carried out in screen house in Pangalengan which consisted of acclimatization stages using a randomized block design with 14 EMS treatment repeated 3 times and observations of plant growth, and yield. The results showed that EMS caused a decrease in germination. Growth observation results at screen house showed plant height, number of leaves, chlorophyll content index, and weight of tubers from treatment had lower than controls. Treatment with 0.07% EMS concentration for 3 hours and 0.01% consentration for 6 hours produced 3D12 and 6A8 mutan genotypes which had high yields. Keywords: potato, EMS, mutation, growth.

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Effect of the developmental stage of potato seedlings on recovery after transplanting to the field and on tuber yield

The Journal of Agricultural Science ◽

10.1017/s0021859600072889 ◽

1995 ◽

Vol 124 (2) ◽

pp. 213-218 ◽

Cited By ~ 2

Author(s):

C. Engels ◽

J. Schwenkel ◽

R. El Bedewy ◽

B. Sattelmacher

Keyword(s):

Gibberellic Acid ◽

Tuber Yield ◽

Nile Delta ◽

Potato Seed ◽

True Potato Seed ◽

Assimilate Partitioning ◽

Solatium Tuberosum ◽

Below Ground ◽

Dim Light ◽

Lateral Branches

SUMMARYUnder the short-day conditions and cool temperatures prevailing from January to March in the Nile delta, Egypt, potato (Solatium tuberosum) seedlings grown from true potato seed formed tubers in the nursery when the plants were less than 5 cm in height. In order to examine the hypothesis that slow field establishment after transplanting and low tuber yields of these seedlings were caused by premature tuberization, different treatments to delay tuberization were applied in the nursery before transplanting.Increasing the air and soil temperature in the nursery accelerated both the development of the above-ground and below-ground shoot organs, but did not improve field establishment of the seedlings after transplanting. Extension of the photoperiod with incandescent dim light, exogenous application of gibberellic acid (GA), and removal of the shoot apex to encourage the growth of lateral branches from the leaf buds increased biomass allocation to the above-ground shoot organs, decreased tuberization in the nursery and accelerated field establishment of transplanted seedlings. Extension of the photoperiod was the most effective treatment to delay tuberization, and doubled the final tuber yield from transplanted seedlings.The results are in agreement with the hypothesis that poor field establishment and low final tuber yields from potato transplants may be caused by the presence of strong tuber sinks at transplanting, which reduce assimilate partitioning towards the roots and above-ground shoots.

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Effect of foliar applications of gibberellic acid or daminozide on plant growth, tuberisation, and carbohydrate accumulation in tubers grown from true potato seed

The Journal of Horticultural Science and Biotechnology ◽

10.1080/14620316.2007.11512270 ◽

2007 ◽

Vol 82 (4) ◽

pp. 535-540 ◽

Cited By ~ 3

Author(s):

A.A. Alexopoulos ◽

G. Aivalakis ◽

K.A. Akoumianakis ◽

H.C. Passam

Keyword(s):

Plant Growth ◽

Gibberellic Acid ◽

Potato Seed ◽

True Potato Seed ◽

Carbohydrate Accumulation

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Effect of Planting Dates on Growth and Yield of True Potato Seed (TPS) in Nursery Raising Approach

Journal of Basic & Applied Sciences ◽

10.6000/1927-5129.2015.11.47 ◽

2015 ◽

Vol 11 ◽

pp. 318-322

Author(s):

M.M. Jamro ◽

◽

S.D. Tunio ◽

U.A. Buriro ◽

Q.D. Chachar

Keyword(s):

Growth And Yield ◽

Potato Seed ◽

True Potato Seed ◽

Planting Dates

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Growth, yield and dormancy of aeroponically produced potato minitubers as a function of planting density and harvesting date

Horticultura Brasileira ◽

10.1590/s0102-0536-20210206 ◽

2021 ◽

Vol 39 (2) ◽

pp. 161-168

Author(s):

Leonardo Balena ◽

João Pedro Malanchuk ◽

Cleto Tamanini Junior ◽

Erica L Ribas ◽

Vlandiney Eschemback ◽

...

Keyword(s):

Plant Density ◽

Growth Yield ◽

Growth And Yield ◽

Planting Density ◽

Potato Seed ◽

Fresh Weight ◽

Potato Plants ◽

Control Virus ◽

Number Of Stems ◽

Virus Spreading

ABSTRACT Potato seed is one of the largest costs of a crop. This is mostly due to the incidence and spread of viruses that occurs when the crop is grown in the open field. Thus, it is necessary to obtain virus-free potato plantlets through meristem isolation, with subsequent cultivation in a protected environment, where it is easier to control virus-spreading insects. One way to increase greenhouse viability is by multiplicating potato seed using high technology systems, among them, aeroponics. The objective of this work was to determine the effect of planting density on the growth and yield of potato plants cv. Agata in aeroponic cultivation, and the effect of harvesting dates and planting densities on the dormancy of harvested minitubers. The number of stems, leaves, and the number and fresh weight of minitubers/plant reduced when planting density was increased from 60 to 180 plants/m2. However, the number of stems, leaves, initiated minitubers, and the number and fresh weight of minitubers/m2 increased when planting density was increased from 60 to 180 plants/m2. The maximum number of type III minitubers (>30 mm) was 613/m2, obtained at the density of 180 plants/m2. Plant density did not affect the dormancy of harvested minitubers, but harvesting date did. Minitubers obtained from latter harvesting dates had a shorter dormancy period. Minitubers harvested at 78 and 64 days after transplanting sprouted 21 and seven days earlier than those picked at 50 days after transplanting.

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