Yield Performance of Four Onion (<i>Allium Cepa</i> L.) Varieties Compared with the Local Variety under Open Field Conditions at Anse Boileau, Seychelles

Abstract

INTRODUCTION Onion (Allium cepa L.) belongs to the family Liliaceae, an important group of crops worldwide (Best, 2000). The crop is a biennial herb of Central Asian origin and used in soups, salads and in canning industries (Tindal, 1983). The crop nutritional composition includes 2.0 g protein, 70 mg calcium and 53 mg phosphorus (Ado, 2001). It also contains the vitamins thiamine, riboflavin and niacin and is used for its medicinal value especially in the case of heart problems (Mettananda and Fordham, 2001).

Performance of Eight Varieties of Onion (<i>Allium cepa</i> L.) Cultivated under Open Field in Tunisia

“…whose plant produced a mean of 5.43 leaves/plant. Boukary et al (2012a) and Dwivedi et al (2012), observed the difference in production of leaves and leaf weight between varieties of onion and attributed this difference mainly to the cultivar, but other researchers confirmed that environmental conditions (Ijoyah et al, 2008) in which plant grown contribute to the development of leaves on plant. Production results showed that the yield of onion varieties ranged from 15.42 to 36.88 t/ha and that some foreign varieties had slightly higher yield than that of the commercial variety 'BHP'.…”

Performance of Red Onion Varieties in Kharif Season under Akola Conditions

“…These differences in maturity period of bulb were observed due to the different genetic constitution of onion varieties. Patil et al [5] and Ijoyah et al [6] also reported the influence of onion varieties on days required for maturity.…”

Performance Evaluation of Aggregatum Onion Genotypes (Allium cepa Var. Aggregatum) for Yield, Quality and Resistance Characters

“…The variation in number of branches per plant might have been due to own genetic makeup and also due to plant height. Boukary et al, (2012) and Dwivedi et al, (2012), observed the difference in production of leaves between varieties of onion and attributed this difference mainly to the cultivar, but other researchers confirmed that environmental conditions (Ijoyah et al, 2008) in which plant growth contribute to the development of leaves on plant. Polar diameter (thickness) in onion is an important character, because it indicates bulb storage ability.…”

“…A cultivar crop performs differently under different agro-climatic conditions and various cultivars of the same species grown even in the same environment give different yields as the performance of a cultivar mainly depends on the interaction of genetic makeup and environment (Boukary et al, 2012). Ijoyah et al, (2008) evaluate the yield performance of four onion varieties and found that some other varieties performed better than the commonly grown onion varieties by the farmers. Tesfay et al, (2011) conducted an evaluation trial of three onion cultivars and concluded that onion cultivar performed differently and Parachinar local variety resulted in higher yield.…”