scholarly journals The effect of storage temperature of steckling bulbs on seed stalk development and seed yield of shallot (Allium cepa L. var. ascalonicum Backer)

2013 ◽  
Vol 66 (3) ◽  
pp. 41-48
Author(s):  
Maria Tendaj ◽  
Barbara Mysiak ◽  
Marcela Krawiec
Keyword(s):  
Seed Production ◽  
Allium Cepa ◽  
Seed Yield ◽  
Storage Temperature ◽  
Local Population ◽  
Lower Percentage ◽  
Positive Effects ◽  
Highest Weight ◽  
Allium Cepa L ◽  
Different Diameters

The aim of this study, conducted in the years 2010–2012, was to evaluate bolting and seed production of shallot depending on storage temperature of steckling bulbs with different diameters. The present study included 4 cultivars (‘Toto’, ‘Ambition F<sub>1</sub>’, ‘Bonilla F<sub>1</sub>’, and ‘Matador F<sub>1</sub>’) and one local population (‘U’). Bulbs with the following diameters: 20–30 mm, 31–40 mm, 41–50 mm, and 51–60 mm, were stored from the first 10-day period of November (2010 and 2011) until the end of March (2011 and 2012) at a temperature of 0–1 <sup>o</sup>C, 4–6 <sup>o</sup>C, and 8–10 <sup>o</sup>C. After they were planted in the field (the second 10-day period of April), observations of bolting were carried out, while the weight of seed umbels and seed yield were determined only for the cultivar ‘Toto’ and the population ‘U’. The storage temperature of steckling bulbs in the range of 4–6 <sup>o</sup>C and 8–10 <sup>o</sup>C was most conducive to bolting, in particular in plants grown from large bulbs with a diameter above 40 mm. In the cultivar ‘Toto’, plants from bulbs with a diameter above 40 mm and stored at a temperature of 4–6 <sup>o</sup>C were characterized by the highest weight of seed umbels. This had an effect on obtaining the highest seed yield (on average 1604.16-2300.7 g per 100 m<sup>2</sup> of area). Shallot plants from the population ‘U’ grown from bulbs with a diameter of 20–30 mm were characterized by a distinctly lower percentage of bolting plants compared to the cultivars studied. For this reason, this population does not promise positive effects in shallot production for seed.

scholarly journals Effect of bulb size and plant spacing on seed production of onion (Allium cepa L.)

2012 ◽  
Vol 37 (3) ◽  
pp. 405-414 ◽  
Author(s):  
Md. Asaduzzaman ◽  
Md. Mainul Hasan ◽  
Md. Mahmudul Hasan ◽  
Md. Moniruzzaman ◽  
Mohammad Humayun Kabir Howlander
Keyword(s):  
Field Experiment ◽  
Seed Production ◽  
Allium Cepa ◽  
Seed Yield ◽  
Seed Weight ◽  
Plant Spacing ◽  
Allium Cepa L ◽  
Onion Seed

A field experiment was conducted at the `Research Farm` of Regional Seed Production Office of Lal Teer Seed Limited, Dinajpur, Bangladesh during November 2008 to April 2009. The study was conducted to investigate the effect of bulb size and planting spacing on seed production of cultivar Taherpuri onion. Three bulb sizes [small (5±2g), medium (10±2g), and large (15±2g)] and four planting spacing [closest 25×15, closer 25×20, wider 30×15, and widest 30×20cm] was considered in this experiment. Number of flowering stalks, length of flowering stalks, number of umbels per plant, number seeded fruits, seed weight per umbel, 1000-seed weight and seed yield per hectare were measured to assess the onion seeds. The results revealed that the highest seed yield (776.67 kg) per hectare was obtained from the large bulb (15±2g) with the closest spacing of 25×15cm followed by small bulb size of same spacing. The maximum number of flowers per umbel (371.39), seed weight per umbel (0.80g) and 1000-seed weight (3.92g) were obtained from the largest bulb size (15±2g) with widest (30×20cm) planting spacing. Hence, large bulb size with closest plant spacing is suggested for onion seed production in northern part of Bangladesh. Bangladesh J. Agril. Res. 37(3): 405-414, September 2012 DOI: http://dx.doi.org/10.3329/bjar.v37i3.12084

scholarly journals Evaluation of Seed Production and Quality Performance of Onion (Allium Cepa L.) Varieties at Kulumsa in Arsi Zone South East Ethiopia

2021 ◽  
pp. 33-38
Author(s):  
Nimona Fufa ◽  
Fekadu Gebretensay ◽  
Dasta Tsagaye ◽  
Demis Fikre ◽  
Gizaw Wegayehu ◽  
...  
Keyword(s):  
Field Experiment ◽  
Seed Production ◽  
Allium Cepa ◽  
Seed Yield ◽  
Agricultural Research ◽  
Branch Number ◽  
Strong Basis ◽  
Yield Attributes ◽  
Allium Cepa L ◽  
Arsi Zone

Field experiment involving five improved onion (Allium cepa L.) varieties and carried out at Kulumsa Agricultural Research Center during the 2018 to 2019 cropping seasons under irrigated condition to identify the best performing variety for seed production to the target areas of Arsi Zone. The onion varieties included in the field experiment were (Nafis, Robaf, Nasic Red, Bombe Red, and Adama Red). The experimental design was a randomized complete block design (RCBD) with three replications. Phenological and growth parameters, seed yield, and yield components were studied. The result showed that Variety had a significant effect on most phonological and growth attributes as well as on yield attributes. The number of days to flowering and vigorously were significantly affected by variety; while plant height, days to boolting and branch number was not significantly influenced by variety. Flower stalks height and diameter, number of umbel per plant, and umbel diameter also significantly affected by variety. Seed yield per umbel and mean seed yield per hectare also showed a significance difference among varieties. The highest seed yield per hectare (1415.89 kg/ha) was recorded from Adama Red and followed by Nafis variety, whereas Nasic rerd, Bombe red and Robaf show no significance difference among each other, Therefore, it can be concluded that use of the improved onion varieties such as Adama red and Nafis is advisable and could be appropriate for onion seed production in the test area even though further testing is required to put the recommendation on a strong basis.

scholarly journals Effect of seed stalk pruning and boron application on the seed yield of summer onion (Allium cepa L.) in the high barind tract

2014 ◽  
Vol 38 (4) ◽  
pp. 573-578
Author(s):  
MMR Sarker ◽  
MJU Sarker ◽  
ASMMR Khan ◽  
MS Islam ◽  
MS Hossain
Keyword(s):  
Seed Production ◽  
Allium Cepa ◽  
Seed Yield ◽  
Allium Cepa L ◽  
Barind Tract ◽  
Onion Seed

The experiment was carried out at FSRD site, Kadamshahar, Godagari, Rajshahi during 2009-10 and 2010-11 to find out the number of seed stalk and optimum boron dose for seed production of summer onion in High Barind Tract (AEZ 26). The treatments comprised three levels of seed stalk (0, 4, and 6) and three rates of boron application (0, 1, and 2 kg/ha). It revealed that the seed stalks and boron either in single or combination had significant effect on the yield and yield contributing characters of onion seed. The combination comprising 4 stalks with 2 kg B/ha and 6 stalks with 1 kg B/ha were found to be the best choice for achieving higher seed yield of onion. The highest seeded fruit/umbel (4.06 and 4.55) and seed yield (669 and 713 kg/ha) were recorded from 6 stalks/plant fertilized with 1 kg boron/ha which was statistically identical to 6 stalks/plant fertilized with 2 kg boron/ha and 4 stalks/plant with 2 kg/ha boron in the High Barind Tract. DOI: http://dx.doi.org/10.3329/bjar.v38i4.18870 Bangladesh J. Agril. Res. 38(4): 573-578, December 2013

scholarly journals Seed yield of onion (Allium cepa L.) as affected by bulb size and intra-row spacing

2017 ◽  
Vol 12 (12) ◽  
pp. 987-996 ◽  
Author(s):  
Haile Ashenafi ◽  
Tesfaye Bizuayehu ◽  
Worku Walelign
Keyword(s):  
Allium Cepa ◽  
Seed Yield ◽  
Row Spacing ◽  
Allium Cepa L
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