Abstract
Genetic variability is the fundamental requirement for any plant breeding program to develop a superior cultivar. This study aimed to estimate the genetic variability and determine the correlation between the various quantitative characteristics of garlic accessions. The experiment was carried out in the Ezo-Otte area of the Chencha district in the Gamo highlands of southern Ethiopia and 28 garlic accessions were evaluated in a Randomized Complete Block Design with three replicates. Various morphological descriptors were measured to evaluate the variability and correlation coefficients. The analysis of variance showed a highly significant variation for all characters, which indicates greater variability in the accession. High and moderate heritability in broad sense estimates were obtained for the majority of the traits examined. Days to maturity (28.09), bulb weight (22.33), and bulb diameter (equatorial) (21.33) showed higher genetic advance. The maximum value of the genetic progress as a percentage of the mean was observed in bulb yield, clove weight, bulb diameter (equatorial), and number of leaves. In addition, bulb diameter (equatorial), clove weight, bulb weight, and plant height were observed to be highly hereditary coupled with high genetic advance as a percentage of the mean, suggesting that they can be improved by direct selection. Coefficient analysis has shown that maximum attention should be paid to bulb diameter (equatorial), the number of cloves, bulb diameter (equatorial), bulb weight, plant height, and leaf length, as these traits also correlate positively and significantly with bulb yield.
Highlights
Azene TesfayeReceived 1 July 2021; Revised 16 September 2021; Accepted 15 October 2021; Published 21 October 2021
Garlic (Allium sativum L.) is a diploid (2n 2x 16) bulbous plant that belongs to the Amaryllidaceae family and has enormous value in human life [1]. e cultivated plant originates from Central Asia and is cultivated all over the world for culinary, medicinal, and religious purposes [2].e presence of sulfur compounds contributes to its medicinal properties
Experimental Design and Field Management. e garlic accessions were planted in a Randomized Complete Block Design (RCBD) with three replicates in the 2017 cropping/ Meher season at Ezo-Otte, Chencha, Gamo highlands of southern Ethiopia. e plot size was 2 m × 1 m with 5 rows of 2 m in length and 10 cm between plants within a row and 20 cm between rows [6, 7]
Summary
Received 1 July 2021; Revised 16 September 2021; Accepted 15 October 2021; Published 21 October 2021. Is study aimed to estimate the genetic variability and determine the correlation between the various quantitative characteristics of garlic accessions. Days to maturity (28.09), bulb weight (22.33), and bulb diameter (equatorial) (21.33) showed higher genetic advance. E maximum value of the genetic progress as a percentage of the mean was observed in bulb yield, clove weight, bulb diameter (equatorial), and number of leaves. Bulb diameter (equatorial), clove weight, bulb weight, and plant height were observed to be highly hereditary coupled with high genetic advance as a percentage of the mean, suggesting that they can be improved by direct selection. Coefficient analysis has shown that maximum attention should be paid to bulb diameter (equatorial), the number of cloves, bulb diameter (equatorial), bulb weight, plant height, and leaf length, as these traits correlate positively and significantly with bulb yield
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