Effect of Gibberellic Acid on the Growth Rate and Physiological Age of Tubers Cultivated from True Potato Seed

2016 ◽  
Vol 36 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Alexios A. Alexopoulos ◽  
Ioannis C. Karapanos ◽  
Konstantinos A. Akoumianakis ◽  
Harold C. Passam
Keyword(s):  
Growth Rate ◽  
Gibberellic Acid ◽  
Physiological Age ◽  
Potato Seed ◽  
True Potato Seed

scholarly journals Effect of Transplanting Dates and Plant Population on Growth Parameters of Potato (Solanum Tuberosum L.) Raised from True Potato Seed (Tps)

2014 ◽  
Vol 47 (1) ◽  
pp. 97-106
Author(s):  
D. Sen ◽  
A. Rakshit ◽  
D.C. Ghosh
Keyword(s):  
Growth Rate ◽  
Growth Parameters ◽  
Solanum Tuberosum L ◽  
Plant Population ◽  
Potato Seed ◽  
True Potato Seed ◽  
Dry Matter Accumulation ◽  
Tuber Growth ◽  
Area Index ◽  
Tuber Bulking

ABSTRACT A field experiment was conducted during the rabi season of 2007- 2008 and 2008-2009 at Paschim Medinipore, West Bengal to study the effect of transplanting dates and plant population on growth parameters of potato raised from TPS. Dry matter accumulation per plant was more in early transplanted (December 3) and sparsely populated (60 cm x 15 cm) crop. The highest leaf area index was observed in early transplanted crop with closer spacing (40 cm x 10 cm) at 60 days after transplanting. The highest crop growth rate, tuber bulking rate and tuber growth rate values were also recorded in early and closely transplanted TPS crop between 45- 60 days after transplanting during both the years under investigation

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

1995 ◽  
Vol 124 (2) ◽  
pp. 213-218 ◽  
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.

Effect of gibberellic acid on the duration of dormancy of potato tubers produced by plants derived from true potato seed

2008 ◽  
Vol 49 (3) ◽  
pp. 424-430 ◽  
Author(s):  
Alexios A. Alexopoulos ◽  
George Aivalakis ◽  
Konstantinos A. Akoumianakis ◽  
Harold C. Passam
Keyword(s):  
Gibberellic Acid ◽  
Potato Seed ◽  
True Potato Seed ◽  
Potato Tubers

Effect of plant growth regulators on the tuberisation and physiological age of potato (Solanum tuberosum L.) tubers grown from true potato seed

2006 ◽  
Vol 86 (4) ◽  
pp. 1217-1225 ◽  
Author(s):  
Alexios A Alexopoulos ◽  
Konstantinos A Akoumianakis ◽  
Harold C Passam
Keyword(s):  
Weight Loss ◽  
Plant Growth ◽  
Plant Height ◽  
Dry Matter ◽  
Matter Content ◽  
Physiological Age ◽  
Potato Seed ◽  
True Potato Seed ◽  
Dry Matter Content ◽  
Chlormequat Chloride

The effects of plant growth regulators [6-benzyl amino purine (BA), indole-3-acetic acid (IAA), 2,4-dichlorophenoxyacetic acid (2,4-D), gibberellic acid (GA3), chlormequat chloride (CCC), daminozide] and their time of application on tuberisation and physiological age of cv. Chacasina F1 grown from true potato seed (TPS) were studied in four experiments conducted in spring or autumn in Greece. BA, IAA and 2,4-D did not affect plant development, tuberisation or the physiological age of the tubers produced. Daminozide and CCC reduced plant height when applied 30 but not 60 d after transplanting (DAT) in both spring and autumn. Neither substance affected tuberisation or the physiological age of the tubers formed. Application of GA3 30 DAT significantly increased plant height and the number, but not the weight, of tubers formed per plant. Tubers from GA3-treated plants tended to be elongated with a low dry matter content. When GA3 was applied at 60 DAT, plant height was increased, but tuber number, weight and dry matter content were not affected. Late application of GA3 induced a high percentage of sprouted tubers prior to harvest and significantly increased the physiological age of the tubers, as reflected by an increased rate of respiration, sprouting and weight loss after harvest. Although early application of GA3 also increased tuber sprouting prior to harvest, it had no effect on sprouting, respiration and weight loss after harvest. Application of GA3 early in the vegetative cycle may be useful for the production of mini-tubers for propagation, whereas application at a later stage may aid in early planting by accelerating the breaking of tuber dormancy. Key words: Gibberellin, chlormequat chloride, daminozide, dormancy, tuberisation

Effect of supplemental nitrogen on true potato seed weight

1987 ◽  
Vol 64 (9) ◽  
pp. 483-491 ◽  
Author(s):  
N. Pallais ◽  
S. Villagarcia ◽  
N. Fong ◽  
J. Tapia ◽  
R. Garcia
Keyword(s):  
Seed Weight ◽  
Potato Seed ◽  
True Potato Seed
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