干旱区生态环境知识资源中心(Arid): Genetic diversity in Ethiopian sorghum germplasm for root system architecture and trait association

Arid

DOI	10.1016/j.rhisph.2023.100759
	Genetic diversity in Ethiopian sorghum germplasm for root system architecture and trait association
	Duresso, Masarat Elias; Lule, Dagnachew; Tirfessa, Alemu; Gelmesa, Dandena; Tesso, Tesfaye; Menamo, Temesgen; Serba, Desalegn D.
通讯作者	Serba, DD
来源期刊	RHIZOSPHERE
EISSN	2452-2198
出版年	2023
卷号	27
英文摘要	Sorghum productivity in arid and semi-arid regions of Africa is very low, mainly due to limited water availability. Roots are the primary conduit for plants to access moisture and nutrients. Root growth angle determines the direction of root elongation in the soil profile and is an important trait for adaptation to water-limited environments. Information on the extent of genetic variation in root system architecture (RSA) and its relationship with drought response is critical for improving the performance of the crop under drought stress. The objective of this study was to examine the degree of genetic variability for root and shoot traits in sorghum germplasm during the seedling stage. Two hundred and ninety-one sorghum germplasm adapted to different agroecologies of Ethiopia were phenotyped for root and shoot traits using a purpose-built root chamber in the greenhouse at Jimma University. The experiment was set up in a row-column design with three replicates. Significant genetic variation (P < 0.01) was observed for all traits examined except root hair number and shoot dry weight. Root angle varied from 9 degrees to 21.3 degrees with an average of 14.9 degrees and showed moderate heritability of 44.38%. Root dry weight also exhibited moderate heritability (49.3%). Correlation and path coefficient analysis revealed that root angle (RA) was uncorrelated with other RSA traits. Cluster analysis using the RSA traits grouped the 291 ge-notypes into four different clusters. The first three principal components accounted for about 50% of the total variation. The results demonstrate that the Ethiopian sorghum germplasm exhibits large variation in RSA traits that can be harnessed in breeding programs to enhance sorghum productivity under drought stress.
英文关键词	Drought Nodal root angle Root-to-shoot ratio Principal component analysis Path analysis Heritability
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001051238900001
WOS关键词	ANGLE
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398439
推荐引用方式 GB/T 7714	Duresso, Masarat Elias,Lule, Dagnachew,Tirfessa, Alemu,et al. Genetic diversity in Ethiopian sorghum germplasm for root system architecture and trait association[J],2023,27.
APA	Duresso, Masarat Elias.,Lule, Dagnachew.,Tirfessa, Alemu.,Gelmesa, Dandena.,Tesso, Tesfaye.,...&Serba, Desalegn D..(2023).Genetic diversity in Ethiopian sorghum germplasm for root system architecture and trait association.RHIZOSPHERE,27.
MLA	Duresso, Masarat Elias,et al."Genetic diversity in Ethiopian sorghum germplasm for root system architecture and trait association".RHIZOSPHERE 27(2023).