Relationships between stem number, tuber set and yield of Russet Burbank potatoes

Iritani, W. M.; Weiler, L. D.; Knowles, N. Richard

doi:10.1007/bf02877248

Cited by 45 publications

(29 citation statements)

References 20 publications

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“…This is supported by the conclusions of [24]. Contradictory to the current finding [22] reported that higher number of stems per plant to bring about yield reduction, through increase in number of small sized tuber. Moreover, in the current study, tuber number per plant had positive and significant correlation with tuber weight per plant (r = 0.801) and total tuber yield (r = 0.855).…”

Section: Correlation Matrix Among Growth and Yield Parameters Of Potatosupporting

confidence: 91%

“…The differences in number of aerial stems produced by the crops could be influenced by genetic make-up of the plants [21]. Stem number per plant is affected by the number of eyes per seed tuber used [22] and in the current study the number of eyes of the seed tubers used was not uniform. Seed tubers of Ajiba were having slightly more number of eyes compared to the rest of the two varieties.…”

Section: Number Of Aerial Stems Per Plantmentioning

confidence: 76%

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Effect of Potassium Levels on Growth and Productivity of Potato Varieties

Zelelew¹,

Lal²,

Kidane³

et al. 2016

AJPS

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Potato is one of the priority vegetable crops in the highlands of Eritrea growing as a key component in the livelihood systems of farmers. Potato requires a variety of balanced plant mineral nutrients for growth and development without which yield and qualities of tubers are reduced. Potato growers in Eritrea commonly use Di-ammonium Phosphate, Urea and Farmyard manure while potassium fertilizers are overlooked assuming that the soil is developed from K rich parent material and contains sufficient amount of K to support crop growth. However this assumption is based on the result obtained forty-seven years ago. As a result the yield and quality of potato produced is very low as compared with international standards. Therefore the present experiment was conducted to assess the effect of potassium levels on growth and productivity of potato varieties at Hamelmalo Agricultural College, Eritrea. The experiment was conducted in factorial Randomized Complete Block Design with fifteen treatment combinations of three varieties (Ajiba, Zafira and Picasso) and five potassium levels (0, 75, 150, 225 and 300 kg K2O/ha) replicated thrice. The results of the study showed that both variety and potassium had significant effect on growth and yield parameters. Aerial stem number, leaf number per plant and plant height were increased with increasing K levels from 0 to 150 kg while number of days to maturity was increased in the range of 0 -300 kg K 2 O/ha. The result also indicated that variety Ajiba treated with 300 kg K 2 O/ha produced significantly highest tuber weight (1.14 kg) per plant and tuber yield of 49.38 t/ha. The economic analysis result revealed that maximum gross margin 13,665.816 USD/ha was obtained from the application of 300 kg K 2 O/ha. On the whole, it gives an impression that using potassium fertilizer according to soil requirements will have good influence on growth and tuber yield.

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Section: Correlation Matrix Among Growth and Yield Parameters Of Potatosupporting

confidence: 91%

Section: Number Of Aerial Stems Per Plantmentioning

confidence: 76%

Effect of Potassium Levels on Growth and Productivity of Potato Varieties

Zelelew¹,

Lal²,

Kidane³

et al. 2016

AJPS

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“…This has been attributed to more extensive sprout growth on older seed-tubers at planting (11,19). However, in the "Growth Characterization Study," plants from 6 and 18-month-old seed-tubers emerged simultaneously. Madec and Perennec (12) showed that desprouting seed-tubers at planting eliminates age-related differences in emergence.…”

Section: Discussionmentioning

confidence: 99%

“…Seed-tuber physiological age, a somewhat subjective measure ofthe developmental status of a tuber, is a major factor in determining the number and vigor of shoots produced upon sprouting. Indeed, seedtuber age influences all stages of daughter plant growth, from sprouting to final yield (2,3,6,7 (10,11). The length of the incubation phase is temperature dependent, with low temperatures prolonging it and higher temperatures accelerating it (5).…”

Section: Introductionmentioning

confidence: 99%

Effect of Potato Seed-Tuber Age on Plant Establishment and Amelioration of Age-Linked Effects with Auxin

Mikitzel

Knowles²

1990

Plant Physiol.

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Studies were conducted to characterize the effect of advanced potato (Solanum tuberosum L.) seed-tuber age on plant growth potential and whole-plant morphology. Plant growth from singleeye seedcores from 5-to 18-month old 'Russet Burbank' seedtubers was compared. Loss in apical dominance was apparent with advanced age. On a per-core basis, the amount of plant dry weight was equal for the two ages at 30 days from planting. However, individual plants from older cores displayed reduced shoot, root and leaf dry weights, leaf area, and leaf number. These effects reflected altered dry-matter partitioning and contributed to an overall change in plant morphology with advanced age. On a total seedcore basis, relative growth rate of plants from older seedcores was greater than that from younger seedcores over the 30 day growth interval. Leaf area ratio was also greater for plants from the older seedcores; however, unit leaf rate was not affected by tuber age and plants from both young and old seedcores assimilated dry matter at the same rate. Age-induced differences in growth indices reflected differences in the degree of plant differentiation over the interval of study. Treating younger seedcores with 1-naphthaleneacetic acid (NAA) prior to planting inhibited overall plant growth. In older cores, NAA stimulated root growth, restored apical dominance, decreased leaf number per plant, and increased average leaf area per leaf. In short, NAA altered the morphology of plants growing from older seedcores to more closely resemble that of plants growing from younger seedcores. While auxin significantly altered plant form, vigor of plants from older seedcores was not fully restored by auxin treatment, indicating that age-reduced vigor of potato seed-tubers is not solely mediated by auxin.Early sprout vigor significantly influences yielding ability of potato (Solanum tuberosum L.) (17). Seed-tuber physiological age, a somewhat subjective measure ofthe developmental status of a tuber, is a major factor in determining the number and vigor of shoots produced upon sprouting. Indeed, seedtuber age influences all stages of daughter plant growth, from sprouting to final yield (2,3,6,7 (10,11). The length of the incubation phase is temperature dependent, with low temperatures prolonging it and higher temperatures accelerating it (5). Hence, a given physiological age can be produced by manipulating storage temperature and/or length of the storage period.Many of the age-induced alterations in potato plant growth appear to be auxin related. For example, treatment of 20-month-old potato seed-tubers with auxin decreased the number of stems produced per seedpiece and increased the average tuber size and total yield (9). With advancing age, the loss in apical dominance is first evident between eyes on the tuber, and eventually multiple sprouts are produced within each eye. Auxin may play a key role in the regulation of apical dominance in many plants (18). Thus, sprouts developing from aged seed-tubers may have a reduced ability to synth...

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“…3, inset) by 121 DAP the trend was quadratic (Fig. 3 (Iritani et al 1983). Hence, the optimum seed-tuber age for maximum yield depends on length of the growing season.…”

Section: '76 Canadian Journal Of Plant Sciencementioning

confidence: 91%