Home About Browse Search
Svenska


Characterization of oilseed crop noug (Guizotia abyssinica) using agro-morphological traits

Gebeyehu Demissie, Adane and Hammenhag, Cecilia and Ortiz, Rodomiro and Tesfaye, Kassahun and Geleta, Mulatu Dida (2021). Characterization of oilseed crop noug (Guizotia abyssinica) using agro-morphological traits. Agronomy. 11 , 1479
[Research article]

[img] PDF
2MB

Abstract

Noug (Guizotia abyssinica) is an outcrossing oilseed crop that serves as a source of edible oil and other nutrients although its seed yield is generally low. The analysis of agro-morphological traits in relation to seed and oil yields is important for improving the productivity of this crop. The present study aimed at assessing the variation and heritability of quantitative (10) and qualitative (6) traits in noug based on 60 landrace accessions collected from wide geographic area in Ethiopia. The field trial was conducted at two sites in Ethiopia using a square lattice design. The analysis of variance revealed significant variation (p < 0.05) among these accessions. The highest broad-sense heritability (H2) was recorded for days to 10% flowering (DTF10; 85.4%), whereas number of capitula per plant (NCPP) and number of seeds per capitulum (NSPC) showed medium heritability (H2 = 38.5% and 31.6%, respectively). NCPP and NSPC showed a highly significant (p < 0.01) positive and negative genotypic correlation with days to flowering, respectively. These three traits showed very low genotypic coefficient of variation (<1%). In the case of qualitative traits, small capitulum, large flower, green leaf, green stem and course leaf margin showed significant association with higher number of seeds per plant (NSPP). Euclidean distance-based cluster analysis revealed that the clustering pattern of the accessions poorly correlates with the geographic distance between sample collecting sites. Similarly, no clear clustering pattern of accessions was revealed by principal component analysis (PCA) that explained 66.3% and 53.6% of the total variation of quantitative traits and qualitative traits, respectively. The oil content of these accessions was previously investigated and accessions with high oil content show large differences in terms of days to flowering, NSPP and thousand seed weight (TSW). Among the accessions included in this research, Hr_B21; Gj_C17, Sh_I4 and Gr_F15 Gj_G18 and Tg-R13 are top ranking, as they have at least one the following highly desirable traits: early maturity, high oil content, NSPP and TSW. Hence, crossbreeding of their selected genotypes would lead to the development of new cultivars that combine early maturity and both high seed and oil yields.

Authors/Creators:Gebeyehu Demissie, Adane and Hammenhag, Cecilia and Ortiz, Rodomiro and Tesfaye, Kassahun and Geleta, Mulatu Dida
Title:Characterization of oilseed crop noug (Guizotia abyssinica) using agro-morphological traits
Series Name/Journal:Agronomy
Year of publishing :2021
Volume:11
Article number:1479
Number of Pages:14
ISSN:2073-4395
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
Keywords:cluster analysis, Guizotia abyssinica, heritability, qualitative traits, quantitative traits, seed yield
URN:NBN:urn:nbn:se:slu:epsilon-p-112820
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112820
Additional ID:
Type of IDID
DOI10.3390/agronomy11081479
ID Code:24910
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:17 Aug 2021 06:25
Metadata Last Modified:17 Aug 2021 06:31

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits