scholarly journals Influence of Nitrogen and Phosphorus fertilizer Rates on Seed Yield, Yield Components and Quality of Onion (Allium cepa L.) at Kulumsa in Arsi Zone, South East Ethiopia

2019 ◽  
Vol 14 (33) ◽  
pp. 1795-1808
Author(s):  
Fikre Limeneh Demis ◽  
Mohammed Beshir Hussien ◽  
Gebretensay Mengistu Fekadu
Keyword(s):  
Allium Cepa ◽  
Seed Yield ◽  
Yield Components ◽  
Phosphorus Fertilizer ◽  
Nitrogen And Phosphorus ◽  
Allium Cepa L ◽  
Arsi Zone ◽  
Fertilizer Rates

Evaluation of genetic variability of six Iranian landraces of onion (Allium cepa L.) for seed yield and yield components

2011 ◽  
Vol 37 (5) ◽  
pp. 385-391
Author(s):  
Mahin Rafieipour ◽  
Alireza Motallebi-Azar ◽  
Nasser Mahna ◽  
Habib Davati Kazemnia ◽  
Samaneh Kazemiani ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Allium Cepa ◽  
Seed Yield ◽  
Yield Components ◽  
Allium Cepa L ◽  
Yield And Yield Components

scholarly journals Effect of bulb size on selected morphological characteristics of seed stalks, seed yield and quality of onion (Allium cepa L.) seeds

2009 ◽  
Vol 21 (1) ◽  
pp. 27-38 ◽  
Author(s):  
Maria Morozowska ◽  
Roman Hołubowicz
Keyword(s):  
Allium Cepa ◽  
Seed Yield ◽  
Morphological Characteristics ◽  
Germination Energy ◽  
Yield And Quality ◽  
Allium Cepa L ◽  
Entire Plant ◽  
One Year ◽  
Number Of Seeds

Abstract In the years 2002 − 2004 research was carried out on the effect of onion (Allium cepa L.) ‘Wolska’ bulb size on selected morphological characteristics of seed stalks, seed yield and quality. Commercial bulbs (vernalised, one-year-old mother bulbs) were divided into three groups: small, medium and large, with diameters of 4.2-5.3 cm, 5.4-6.3 cm and 6.4-8.5 cm, respectively. Then, the bulbs of each group were planted in the field and grown routinely with the purpose of producing seeds. The following characters were measured on the seed stalks: number and height of seed stalks grown out from one bulb, the seed stalks’ diameter at the height of 10 cm above the ground, the diameter of the inflorescence, seed yield from a single stalk and from the entire plant, the weight of 1000 seeds, number of seeds in 1 g, length and width of the seeds, length and width of the embryos, and germination energy and capacity. Our experiments showed a significant influence of bulb size on the number of seed stalks and the inflorescence diameter. It was discovered that the big bulbs gave larger numbers of seed stalks than the seed stalks grown from the medium and small ones. Small bulbs gave seed stalks with smaller inflorescences than the medium and large ones. The bulb size had no effect on the seed stalk height or their diameter when measured at the level of 10 cm above the ground. The bulb size also did not affect seed yield per one seed stalk, but it did affect the seed yield obtained from the entire plant, which was bigger for plants grown from large bulbs in comparison with the small ones. The size of the bulbs had no effect on either the weight of 1000 seeds or the number of seeds in 1 g. It did not affect either the seed and embryo length and width or the seed germination energy and capacity.

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.

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