Morphogenetic Studies of Some Genotypes of Onion (Allium cepa L.) In Jos, Nigeria

Abstract

The improvement of the fresh bulb and the economic dry matter yields of onion is dependent on the morphogenetic variability and the interrelationships amongst morphological attributes which can be used to determine the quality or performance of the crop. This research was aimed to study the morphogenetic characteristics of ten genotypes of onion (Ares, Violet de Galmi, Red Creole, “Wase”, “Dan Zaria”, “Dan Garko”, “Dan Giyawa”, “Bahaushe”, “Bakana” and “Yar Aleiro”) in Jos, Plateau State. Using the seedlings raised in the nursery, the genotypes were laid out in a completely randomized design (CRD) with four replicates. Results showed that morphological attributes differed amongst the genotypes, except the number of leaves per plant, neck thickness and horizontal bulb diameter. The study concludes that morphological differences, which are responsible for differences in fresh bulb and dry matter yields, exist amongst the different genotypes of onion. These attributes could be used as selection indices in the improvement of the onion.

Performance of Varieties on the Yield and Quality of Onion (Allium cepa l.) through Set to Bulb Method

“…The variation in plant height might be due to genetic causes. The present result corroborates the findings of Walle et al [7] and Sirajo and Namo [10].…”

“…The apparent cause of the variation in bulb weight among the varieties might have been due to their genetic potential. The similar results have also been reported by Sirajo and Namo [10].…”

“…The similar finding in onion was also reported by Ratan et al [11]. On the contrary, Sirajo and Namo [10] stated that differences in mean number of leaves per plant among the genotypes were not significant.…”

Karyotype analysis of shallot (Allium cepa L.) cultivars from Southeast Sulawesi for breeding programs and sustainable food availability

“…The Buton cultivar showed the highest chromosome size, while the Bombana cultivar showed the lowest chromosome size. Research conducted by [12] showed that there were variation in the length of the chromosome of 10 shallot genotypes, which the highest chromosome length was 12.861±1.257 µm, while the lowest chromosome length was 12.499±0.445 µm. Variation in chromosome length were determined by the length of base pairs in the DNA of each chromosome.…”