干旱区生态环境知识资源中心(Arid): Variations in drought tolerance components and their association with yield components in finger millet (Eleusine coracana)

Arid

DOI	10.1071/FP19274
	Variations in drought tolerance components and their association with yield components in finger millet (Eleusine coracana)
	Talwar, Harvinder S.; Kumar, Shiwesh; Madhusudhana, Ragimasalawada; Nanaiah, Ganapathy K.; Ronanki, Swarna; Tonapi, Vilas A.
通讯作者	Talwar, Harvinder S.
来源期刊	FUNCTIONAL PLANT BIOLOGY
ISSN	1445-4408
EISSN	1445-4416
出版年	2020
卷号	47 期号:7 页码:659-674
英文摘要	Finger millet has gained considerable attention worldwide due to its nutritional and health benefits. Being a rainfed crop of semiarid and arid regions, drought is one of the major constraints to its yield stabilisation. To address this, a set of 38 accessions of finger millet were evaluated in both field and mini-lysimeters under both well-watered (WW) and water-stressed (WS) conditions. The objectives of the study were to identify the range of variations for yield components, water-use (WU) and transpiration efficiency (TE) and to examine the potential of the mini-lysimeter system in assessing the genotypic performance in the field conditions. Approximately 2-fold variations in shoot biomass and similar to 9-fold variations in grain yield under WS conditions were observed. Reproductive growth was more sensitive to WS than the vegetative growth. Our results indicate that in addition to yield potential under WW conditions, WU followed by TE were the other two major contributors toward shoot biomass, whereas, HI followed by TE were the major contributors toward grain yield under WS. The close association between the yield components recorded in the field and in mini-lysimeters suggests that the lysimetric system has the great potential to reflect the genotypic performance under field conditions. Regression analyses suggest that HI explained almost all the variations in grain yield under WW conditions, whereas under WS treatment, next to HI, both TE and WU had also contributed significantly to grain yield. The absence of interrelationship between WU and TE suggests that both these components contribute independently toward the yield components under WW or WS conditions. The accessions with higher shoot biomass and grain yield extract much more water during the post-anthesis stages than the poor performers under WS. Results also suggests that higher WU contributed more towards shoot biomass and higher TE contributed more towards grain yield by improving the harvest index.
英文关键词	grain yield mini-lysimeter shoot biomass transpiration efficiency water extraction ability water use
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000537906700007
WOS关键词	WATER-USE EFFICIENCY ; TRANSPIRATION EFFICIENCY ; CORE COLLECTION ; SORGHUM ; ROOT ; L. ; TRAITS ; WHEAT ; INTERRELATIONSHIPS ; ADAPTATION
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318486
作者单位	ICAR Indian Inst Millets Res, Hyderabad 500030, Telangana, India
推荐引用方式 GB/T 7714	Talwar, Harvinder S.,Kumar, Shiwesh,Madhusudhana, Ragimasalawada,et al. Variations in drought tolerance components and their association with yield components in finger millet (Eleusine coracana)[J],2020,47(7):659-674.
APA	Talwar, Harvinder S.,Kumar, Shiwesh,Madhusudhana, Ragimasalawada,Nanaiah, Ganapathy K.,Ronanki, Swarna,&Tonapi, Vilas A..(2020).Variations in drought tolerance components and their association with yield components in finger millet (Eleusine coracana).FUNCTIONAL PLANT BIOLOGY,47(7),659-674.
MLA	Talwar, Harvinder S.,et al."Variations in drought tolerance components and their association with yield components in finger millet (Eleusine coracana)".FUNCTIONAL PLANT BIOLOGY 47.7(2020):659-674.