干旱区生态环境知识资源中心(Arid): Novel sources of drought tolerance from landraces and wild sorghum relatives

Arid

DOI	10.1002/csc2.20300
	Novel sources of drought tolerance from landraces and wild sorghum relatives
	Ochieng, Grace; Ngugi, Kahiu; Wamalwa, Lydia N.; Manyasa, Eric; Muchira, Nicoleta; Nyamongo, Desterio; Odeny, Damaris A.
通讯作者	Ngugi, K (corresponding author), Univ Nairobi, Dept Plant Sci & Crop Protect, POB 30197-00100, Nairobi, Kenya. ; Odeny, DA (corresponding author), Int Crops Res Inst Semiarid Trop Kenya, POB 39063-00623, Nairobi, Kenya.
来源期刊	CROP SCIENCE
ISSN	0011-183X
EISSN	1435-0653
出版年	2021
卷号	61 期号:1 页码:104-118
英文摘要	Sorghum (Sorghum bicolor [L.] Moench) is the fifth most important cereal crop worldwide and second after maize (Zea mays L.) in Kenya. It is an important food security crop in arid and semi-arid lands, where its production potential is hampered by drought. Drought tolerance can be measured by a plant's ability to resist premature senescence, often described as stay-green. This study was carried out with the objective of identifying novel stay-green trait among wild and landrace genotypes of sorghum. Forty-four sorghum genotypes that included 16 improved, nine landraces, and 17 wild relatives of sorghum alongside known stay-green sources, B35 and E36-1, were evaluated under well-watered and water-stressed conditions in an alpha-lattice design of three replications. Data was collected on plant height (PHT), flag leaf area (FLA), panicle weight (PWT), 100-seed weight (HSW), relative chlorophyll content (RCC), number of green leaves at maturity (GLAM), days to 50% flowering (DFL), and grain yield (YLD). Genetic diversity was determined using diversity arrays technology (DArT) sequencing and quality control (QC) markers were generated using a java script. Lodoka, a landrace, was the most drought-tolerant genotype, recorded the highest numbers of RCC and GLAM, and outperformed B35 and E36-1 in yield under water-stress and well-watered conditions. The RCC was highly correlated with GLAM (r = .71) and with yield-related traits, HSW (r = .85), PWT (r = .82), and YLD (r = .78). All traits revealed high heritability (broad-sense) ranging from 60.14 to 98.4% for RCC and DFL, respectively. These results confirm earlier reports that wild relatives and landraces are a good source of drought tolerance alleles.
类型	Article
语种	英语
开放获取类型	Green Accepted, hybrid
收录类别	SCI-E
WOS记录号	WOS:000613693500010
WOS关键词	STAY-GREEN TRAIT ; GRAIN-YIELD ; GENETIC DIVERSITY ; INTROGRESSION ; ASSOCIATION ; COMPLEX ; HYBRIDS ; MAIZE ; RICE ; L.
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349900
作者单位	[Ochieng, Grace; Ngugi, Kahiu; Wamalwa, Lydia N.; Muchira, Nicoleta] Univ Nairobi, Dept Plant Sci & Crop Protect, POB 30197-00100, Nairobi, Kenya; [Manyasa, Eric; Odeny, Damaris A.] Int Crops Res Inst Semiarid Trop Kenya, POB 39063-00623, Nairobi, Kenya; [Nyamongo, Desterio] Kenya Agr & Livestock Res Org, Genet Resources Res Inst, POB 781-00902, Kikuyu, Kenya
推荐引用方式 GB/T 7714	Ochieng, Grace,Ngugi, Kahiu,Wamalwa, Lydia N.,et al. Novel sources of drought tolerance from landraces and wild sorghum relatives[J],2021,61(1):104-118.
APA	Ochieng, Grace.,Ngugi, Kahiu.,Wamalwa, Lydia N..,Manyasa, Eric.,Muchira, Nicoleta.,...&Odeny, Damaris A..(2021).Novel sources of drought tolerance from landraces and wild sorghum relatives.CROP SCIENCE,61(1),104-118.
MLA	Ochieng, Grace,et al."Novel sources of drought tolerance from landraces and wild sorghum relatives".CROP SCIENCE 61.1(2021):104-118.