干旱区生态环境知识资源中心(Arid): Deciphering trait associated morpho-physiological responses in pearlmillet hybrids and inbred lines under salt stress

Arid

DOI	10.3389/fpls.2023.1121805
	Deciphering trait associated morpho-physiological responses in pearlmillet hybrids and inbred lines under salt stress
	Kumar, Ashwani; Sheoran, Parvender; Mann, Anita; Yadav, Devvart; Kumar, Arvind; Devi, Sunita; Kumar, Naresh; Dhansu, Pooja; Sharma, Dinesh K.
通讯作者	Kumar, A
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2023
卷号	14
英文摘要	Pearl millet is a staple food for more than 90 million people residing in highly vulnerable hot arid and semi-arid regions of Africa and Asia. These regions are more prone to detrimental effects of soil salinity on crop performance in terms of reduced biomass and crop yields. We investigated the physiological mechanisms of salt tolerance to irrigation induced salinity stress (ECiw similar to 3, 6 & 9 dSm(-1)) and their confounding effects on plant growth and yield in pearl millet inbred lines and hybrids. On average, nearly 30% reduction in above ground plant biomass was observed at ECiw similar to 6 dSm(-1) which stretched to 56% at ECiw similar to 9 dSm(-1) in comparison to best available water. With increasing salinity stress, the crop performance of test hybrids was better in comparison to inbred lines; exhibiting relatively higher stomatal conductance (gS; 16%), accumulated lower proline (Pro; -12%) and shoot Na+/K+(-31%), synthesized more protein (SP; 2%) and sugars (TSS; 32%) compensating in lower biomass (AGB; -22%) and grain yield (GY: -14%) reductions at highest salinity stress of ECiw similar to 9 dSm(-1). Physiological traits modeling underpinning plant salt tolerance and adaptation mechanism illustrated the key role of 7 traits (AGB, Pro, SS, gS, SPAD, Pn, and SP) in hybrids and 8 traits (AGB, Pro, PH, Na+, K+, Na+/K+, SPAD, and gS) in inbred lines towards anticipated grain yield variations in salinity stressed pearl millet. Most importantly, the AGB alone, explained >91% of yield variation among evaluated hybrids and inbreed lines at ECiw similar to 9 dSm(-1). Cumulatively, the better morpho-physiological adaptation and lesser yield reduction with increasing salinity stress in pearl millet hybrids (HHB 146, HHB 272, and HHB 234) and inbred lines (H77/833-2-202, ICMA 94555 and ICMA 843-22) substantially complemented in increased plant salt tolerance and yield stability over a broad range of salinity stress. The information generated herein will help address in deciphering the trait associated physiological alterations to irrigation induced salt stress, and developing potential hybrids in pearl millet using these parents with special characteristics.
英文关键词	saline irrigation salt tolerance morpho-physiological traits regression analysis trait modeling pearl millet yield
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000950141500001
WOS关键词	PEARL-MILLET ; DROUGHT TOLERANCE ; TERMINAL DROUGHT ; SALINITY ; PHOTOSYNTHESIS ; YIELD ; QTL
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/2XILL650/396618
推荐引用方式 GB/T 7714	Kumar, Ashwani,Sheoran, Parvender,Mann, Anita,et al. Deciphering trait associated morpho-physiological responses in pearlmillet hybrids and inbred lines under salt stress[J],2023,14.
APA	Kumar, Ashwani.,Sheoran, Parvender.,Mann, Anita.,Yadav, Devvart.,Kumar, Arvind.,...&Sharma, Dinesh K..(2023).Deciphering trait associated morpho-physiological responses in pearlmillet hybrids and inbred lines under salt stress.FRONTIERS IN PLANT SCIENCE,14.
MLA	Kumar, Ashwani,et al."Deciphering trait associated morpho-physiological responses in pearlmillet hybrids and inbred lines under salt stress".FRONTIERS IN PLANT SCIENCE 14(2023).