Potato seed productivity: Factors influencing eye number per seed piece and subsequent performance

Nielson, Mark; Iritani, W. M.; Weiler, L. D.

doi:10.1007/bf02853676

Cited by 21 publications

(10 citation statements)

References 12 publications

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“…The significant effect of environment may also reflect other factors, including use of predominantly whole seed in 1999 compared to cut seed in 2000. Potato growth is sensitive to the properties of the seed source used (Nielson et al 1989). The physiological age of seed, number of eyes, and state of tuber dormancy at planting may have varied among the different seed sources and in the 2 test years.…”

Section: Discussionmentioning

confidence: 99%

Nitrogen use efficiency characteristics of commercial potato cultivars

Zebarth¹,

Tai²,

Tarn³

et al. 2004

Can. J. Plant Sci.

100

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. 2004. Nitrogen use efficiency characteristics of commercial potato cultivars. Can. J. Plant Sci. 84: 589-598. One approach for reducing the contribution of potato (Solanum tuberosum L.) production to nitrate contamination of groundwater is to develop cultivars which utilize N more efficiently. In this study, variation in N use efficiency (NUE; dry matter production per unit crop N supply) characteristics of 20 commercial potato cultivars of North American and European origin were evaluated in 2 yr. Cultivars were grown with or without application of 100 kg N ha -1 as ammonium nitrate banded at planting. The recommended within-row spacing was used for each cultivar and no irrigation was applied. Plant dry matter and N accumulation were determined prior to significant leaf senescence. Crop N supply was estimated as fertilizer N applied plus soil inorganic N measured at planting plus apparent net soil N mineralization. Nitrogen use efficiency decreased curvilinearly with increasing crop N supply. Nitrogen use efficiency was lower for early-maturing cultivars compared to mid-season and late-maturing cultivars. A curvilinear relationship was obtained between plant dry matter accumulation and plant N accumulation using data for all cultivars. Deviations from this relationship were interpreted as variation in N utilization efficiency (NUtE; dry matter accumulation per unit N accumulation). Significant differences in NUtE were measured among cultivars of similar maturity. Nitrogen uptake efficiency (NUpE; plant N content per unit crop N supply) and soil nitrate concentration measured at plant harvest were uniformly low for all cultivars when crop N supply was limited, but varied among cultivars when N was more abundant. This suggests that potato cultivars vary more in terms of N uptake capacity (plant N accumulation in the presence of an abundant N supply) than in terms of NUpE. Les variétés ont été cultivées avec ou sans application latérale de 100 kg de N par hectare sous forme de nitrate d'ammonium. Les auteurs ont respecté l'écartement recommandé pour chaque cultivar et n'ont pas irrigué la culture. Ils ont déterminé la quantité de matière sèche dans la plante et l'accumulation de N avant une trop forte sénescence des feuilles. La quantité de N fournie aux plantes a été estimée à partir de l'engrais appliqué et de la concentration de N minéral dans le sol à la plantation, plus la minéral-isation nette apparente de cet élément. L'efficacité de l'assimilation de l'azote diminue de façon curviligne avec la hausse de la quantité de N disponible. Les cultivars hâtifs assimilent moins bien l'azote que les cultivars de mi-saison ou tardifs. Lorsqu'on analyse les données venant des différents cultivars, on remarque une relation curviligne entre la quantité de matière sèche et celle de N accumulées par la plante. Les écarts à cette relation sont attribués à une variation dans l'efficacité de l'assimilation du N (EAsN; accumulation de matière sèche par unité de N accumulée). L'EAsN présente d'importantes variations entre le...

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Section: Discussionmentioning

confidence: 99%

Nitrogen use efficiency characteristics of commercial potato cultivars

Zebarth¹,

Tai²,

Tarn³

et al. 2004

Can. J. Plant Sci.

100

View full text Add to dashboard Cite

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“…However, total stem number is affected by other factors like temperature (Haverkort and Harris, 1987) and growth regulators (Marinus and Bodlaander, 1978). Besides, the number of main stem produced plant -1 is a genotypic character (Nielson et al 1989) and it is also affected by other factors such as length of the pre-sprouting period (Allen, 1978), size of seed tuber (Haverkort et al 1991;Wurr, 1974) and physiological age (Iritani, 1968). Genotype by treatment interaction was not significant while year by treatment and year by genotype were significant.…”

Section: Stem Numbermentioning

confidence: 98%

Growth and Yield Characters of Potato Genotypes Grown in Drought and Irrigated Conditions of Nepal

Luitel

Khatri

Choudhary

et al. 2015

Int J Appl Sci Biotechnol

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This experiment was conducted to assess the genotypic variation for the growth, yield and yield components of potato grown under drought and irrigated conditions at Hattiban Research Farm, Khumaltar during the summer cropping season (Feb.-May) of the two consecutive years (2013 and 2014). The results revealed that canopy cover, stem height and number of leavers were more sensitive to drought and the effect was more pronounced in early cultivar Desiree. Stem height and leaf number of plant were more (36% and 45%, respectively) reduced in Desiree than other genotypes. Mean tuber number decreased by 55% under drought condition. Drought stress reduced marketable tuber number by 79% as compared to irrigated treatment. Drought stress reduced the marketable tuber yield from 70% to 87%. The clones CIP 392242.25 and LBr-40 had relatively lower yield loss, and less drought susceptibility index under drought indicating their tolerance to drought in field condition. Further experiment is recommended to study the physiological parameters of these genotypes under different water and soil conditions. Int J Appl Sci Biotechnol, Vol 3(3): 513-519

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“…However, if one compares their data within our range (90 × 20 cm to 90 × 35 cm) one can observe that they did not observe any differences. Nielson et al (1989) found a relationship between eye numbers and stem density and postulated that this was varietal. When they tested two varieties Russet Burbank and Nooksack cultivars they found out that Russet Burbank averaged twice as many eyes per seed tuber compared to Nooksack tubers of equal size.…”

Section: Effect Of Spacing and Variety On Stem Countmentioning

confidence: 99%

Growth, yield and quality responses to plant spacing in potato (Solanum tuberosum) varieties

Mangani¹,

Mazarura²,

Mtaita³

et al. 2015

Afr. J. Agric. Res.

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A field experiment was conducted from November to March during the 2012 / 2013 planting season at Africa University farm, Mutare, Zimbabwe to evaluate the effects of plant spacing and different potato varieties on growth, yield and quality of potato (Solanum tuberosum L.). The experiment was designed as a randomized complete block design with 4 × 3 factorial arrangements of treatments. The first factor was plant spacing (in-row spacing); 20, 25, 30 and 35 cm. The second factor was varieties: BP1, KY20 and Mnandi. Very close spacing produced a high number of small sized tubers leading to reduced marketable yield. The highest stem count was observed at high plant densities, the lowest at low plant densities. At low density plantings, leaf number per plant was high and at high density plantings the leaf number was reduced across all varieties. BP1 and KY20 exhibited the highest specific gravity and Mnandi had the least. Results of the study suggest that a wider spacing of 90 by 35 cm can be advantageous for all the three varieties since all the varieties compensated for the additional spacing to produce the highest marketable yield yet with less seed thus reducing production cost. Also from the study, an in-row spacing of 25 cm can be used by seed producers since the highest number of medium sized tubers was obtained and this size is normally used as seed.

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Potato seed productivity: Factors influencing eye number per seed piece and subsequent performance

Cited by 21 publications

References 12 publications

Nitrogen use efficiency characteristics of commercial potato cultivars

Nitrogen use efficiency characteristics of commercial potato cultivars

Growth and Yield Characters of Potato Genotypes Grown in Drought and Irrigated Conditions of Nepal

Growth, yield and quality responses to plant spacing in potato (Solanum tuberosum) varieties

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