干旱区生态环境知识资源中心(Arid): Agro-morphological diversity of Ethiopian sorghum [Sorghum bicolor(L.) Moench] landraces under water limited environments

Arid

DOI	10.1007/s10722-020-00968-7
	Agro-morphological diversity of Ethiopian sorghum [Sorghum bicolor(L.) Moench] landraces under water limited environments
	Wondimu, Zeleke; Bantte, Kassahun; Paterson, Andrew H.; Worku, Walelign
通讯作者	Wondimu, Z
来源期刊	GENETIC RESOURCES AND CROP EVOLUTION
ISSN	0925-9864
EISSN	1573-5109
出版年	2020
卷号	67 期号:8 页码:2149-2160
英文摘要	Drought stress is one of the major constraints affecting sorghum [Sorghum bicolor(L.) Moench] production in rain-fed regions of the Semi-Arid Tropics. Ethiopia is the suspected center of origin for sorghum and as such has tremendous variability for a wide range of traits. Ironically, there has been little systematic characterization of Ethiopian sorghum for traits of agronomic interest including drought tolerance. Hence, the objectives of this study were to evaluate the phenotypic diversity of 315 sorghum accessions (314 landraces plus 1 standard check) collected from farmers' fields of diverse geographic regions in Ethiopia, and to identify potential sources of drought tolerance for future breeding programs. We phenotyped these accessions for ten agro-morphological traits at two water limited environments (Kobo and Mieso). Significant (p < 0.05) differences among genotypes and genotype by environment interaction effects were found for all traits studied, as well as significant correlations between agro-morphological traits of primary interest in sorghum improvement programs. While a lack of geographic differentiation suggested extensive gene flow among the regions, agro-morphological traits reveal clear differentiation among eight clusters that are phenotypically distinct. An intriguing hypothesis is that the richness of diversity in Ethiopia may facilitate selection for different allele combinations that result in particular suites of traits (ideotypes). This would provide great opportunity to identify diverse sources of tolerance and/or highly contrasting lines that could be used for sorghum improvement programs, crossing to potentially obtain even more extreme, transgressive, phenotypes. High yielding and drought tolerant lines were more abundant among accessions from lowland areas, implying that targeted collection from these areas would be important for improving drought adaptation of sorghum. Overall, high phenotypic trait-based variability for sorghum improvement remains available in Ethiopia, with further collection and/or detailed characterization using molecular markers needed to promote the conservation and effective use of these resources
英文关键词	Diversity Drought stress Sorghum Agro-morphological traits
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000543025800002
WOS关键词	BICOLOR L. MOENCH ; DROUGHT RESISTANCE ; PEARL-MILLET ; YIELD ; GERMPLASM ; NUMBER
WOS类目	Agronomy ; Plant Sciences
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/2XILL650/324837
作者单位	[Wondimu, Zeleke; Bantte, Kassahun] Jimma Univ, Coll Agr & Vet Med, POB 307, Jimma, Ethiopia; [Paterson, Andrew H.] Univ Georgia, Plant Genome Mapping Lab, Athens, GA 30602 USA; [Worku, Walelign] Hawassa Univ, Coll Agr, POB 05, Hawassa, Ethiopia
推荐引用方式 GB/T 7714	Wondimu, Zeleke,Bantte, Kassahun,Paterson, Andrew H.,et al. Agro-morphological diversity of Ethiopian sorghum [Sorghum bicolor(L.) Moench] landraces under water limited environments[J],2020,67(8):2149-2160.
APA	Wondimu, Zeleke,Bantte, Kassahun,Paterson, Andrew H.,&Worku, Walelign.(2020).Agro-morphological diversity of Ethiopian sorghum [Sorghum bicolor(L.) Moench] landraces under water limited environments.GENETIC RESOURCES AND CROP EVOLUTION,67(8),2149-2160.
MLA	Wondimu, Zeleke,et al."Agro-morphological diversity of Ethiopian sorghum [Sorghum bicolor(L.) Moench] landraces under water limited environments".GENETIC RESOURCES AND CROP EVOLUTION 67.8(2020):2149-2160.