Molecular Plant Breeding 2016, Vol.7, No.22, 1
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5
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Research Report Open Access
Genetic Variability and Correlation Analysis of Ethiopian Linseed (
Linum
usitatissimum
L.) Accessions
Yared Semahegn , Misteru Tesfaye
Holetta Research Center, Ethiopian Institute of Agricultural Research, P.O.Box 2003, Addis Ababa, Ethiopia
Corresponding author:
Molecular Plant Breeding, 2016, Vol.7, No.22, doi
Received: 16 Mar., 2016
Accepted: 30 Apr., 2016
Published: 07 Jun., 2016
Copyright © 2016
Yared and Misteru, This is an open access article published under the terms of the Creative Commons Attribution License, which permits
unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article
:
Yared S., and Misteru T., 2016, Genetic Variability and Correlation Analysis of Ethiopian Linseed (
Linum
usitatissimum
L.) Accessions, Molecular Plant
Breeding, 7(22): 1-5 (doi
Abstract
This study was executed in 2012/13 cropping season to determine variation of 202 accessions and correlation coefficients
of some agronomic characters. The experiment was carried using augmented design with no replication. Accessions showed variation
for days to flowering ranged between 77 and 135 days with a mean value of 99.65 and coefficient of variation 13%. Accessions such
as acce # 10 077, 10 078, 1 0079, 10 084, 10 086, 10 087, 13 578, 13 598, 13 620 and 13 649 showed earliness, which ranged from
170-172 days to mature, while accessions such as acce # 212 854, 212 857, 215 716, 10 103, 10 104, and 10 105 took 180-182 days
to mature. A range of 14.0 to 38.8 was recorded for number of capsule per plant with a mean value of 23.12 and coefficient of
variation 19%. Accessions such as acce # 230 822, 10 070, 10 105, 10 086, 10 069, 10 079, 10 052 and 219 969 had number of
capsule ranged from 32 -41. A significant amount of variation was also observed for seed yield, which was between 104 kg/ha and
1982 kg/ha with a mean value of 984.37 kg/ha and coefficient of variation 39%. Accessions such as acce # 10 067, 10 061, 10 084,
10 069, 13 755, 10 070, 10 054, 10 068, 241 826, 10 064 and 10 150 were high yielding, which varied between 1 592 kg/ha and 1
990 kg/ha. Correlation coefficient analysis indicated that seed yield had significant positive association with plant height (0.215 9),
number of secondary branches (0.204 8), and number of capsule (0.384 6), while it recorded significant negative correlation with
days to maturity (-0.142 6) and number of primary branches (-0.298 2). This study has also suggested that number of capsule per
plant was found to be the most important yield component for the improvement of seed yield of linseed.
Keywords
Accessions; Correlation coefficients; Linseed; Variation; Yield; Yield component
Background
Linseed (
Linum
usitatissimum
L.; 2n=30) is one of the most important oil crops in the highlands of Ethiopia. It is
cultivated for seed production, which is used for extracting edible oil. Ethiopia is the seventh world linseed
producing countries after Canada, Russia, China, Kazkhstan, United States and India (FAO, 2012). According to
CSA (2014) data, it covered an area of 82, 325.78 ha of cultivated land, and produced 83, 130.5 tones with
productivity of 1.0 t ha-1. It is commonly grown on marginal lands with less or no input (Teklewolde et al., 1992).
Increasing seed yield of linseed is the main breeding objective along with others such as breeding for quality,
disease resistance, frost resistance etc.
Genetic variation is a prerequisite for any crop breeding. Studies on genetic variation have been carried out by
several researchers (Fu et al., 2002; Adugna and Labuschangne, 2004; Tadesse et al., 2009; Kandil et al., 2012).
As seed yield is an intricate character, studying the association of characters is of paramount importance in order
to improve the seed yield through indirect selection of yield related characters. Several researches have been
executed on characters association (Kapoor and Chawla, 1983; Mirza et al., 1996; Adugna and Labuschangne,
2003; Saeid et al., 2003; Copur et al., 2006). This study was undertaken to determine the genetic variation among
202 linseed accessions and determine the association of characters.
1 Results and Discussion
1.1 Days to flowering
Days to flowering had variation ranged from 77.00 to 135.00 with a mean value of 99.65 and coefficient of
