干旱区生态环境知识资源中心(Arid): Genetic Variation for Nitrogen Use Efficiency Traits in Global Diversity Panel and Parents of Mapping Populations in Pearl Millet

Arid

DOI	10.3389/fpls.2021.625915
	Genetic Variation for Nitrogen Use Efficiency Traits in Global Diversity Panel and Parents of Mapping Populations in Pearl Millet
	Pujarula, Vijayalakshmi; Pusuluri, Madhu; Bollam, Srikanth; Das, Roma Rani; Ratnala, Rambabu; Adapala, Gopikrishna; Thuraga, Vishnukiran; Rathore, Abhishek; Srivastava, Rakesh K.; Gupta, Rajeev
通讯作者	Srivastava, RK ; Gupta, R (corresponding author), Int Crops Res Inst Semi Arid Trop, Patancheru, Andhra Pradesh, India.
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2021
卷号	12
英文摘要	Nitrogen (N) is one of the primary macronutrients required for crop growth and yield. This nutrient is especially limiting in the dry and low fertility soils where pearl millet [Pennisetum glaucum (L.) R. Br] is typically grown. Globally, pearl millet is the sixth most important cereal grown by subsistence farmers in the arid and semi-arid regions of sub-Saharan Africa and the Indian subcontinent. Most of these agro-ecologies have low N in the root zone soil strata. Therefore, there is an immense need to identify lines that use nitrogen efficiently. A set of 380 diverse pearl millet lines consisting of a global diversity panel (345), parents of mapping populations (20), and standard checks (15) were evaluated in an alpha-lattice design with two replications, 25 blocks, a three-row plot for 11 nitrogen use efficiency (NUE) related traits across three growing seasons (Summer 2017, Rainy 2017, and Summer 2018) in an N-depleted precision field under three different N levels (0%-N-0, 50%-N-50, 100%-N-100 of recommended N, i.e., 100 kg ha(-1)). Analysis of variance revealed significant genetic variation for NUE-related traits across treatments and seasons. Nitrogen in limited condition (N-0) resulted in a 27.6 and 17.6% reduction in grain yield (GY) and dry stover yield (DSY) compared to N-50. Higher reduction in GY and DSY traits by 24.6 and 23.6% were observed under N-0 compared to N-100. Among the assessed traits, GY exhibited significant positive correlations with nitrogen utilization efficiency (NUtE) and nitrogen harvest index (NHI). This indicated the pivotal role of N remobilization to the grain in enhancing yield levels. Top 25 N-insensitive (NIS-top grain yielders) and N-sensitive (NS-poor grain yielders) genotypes were identified under low N conditions. Out of 25 NIS lines, nine genotypes (IP 10820, IP 17720, ICMB 01222-P1, IP 10379, ICMB 89111-P2, IP 8069, ICMB 90111-P2, ICMV IS89305, and ICMV 221) were common with the top 25 lines for N-100 level showing the genotype plasticity toward varying N levels. Low N tolerant genotypes identified from the current investigation may help in the identification of genomic regions responsible for NUE and its deployment in pearl millet breeding programs through marker-assisted selection (MAS).
英文关键词	pearl millet nitrogen use efficiency genotypic variations phenotyping nitrogen-responsive
类型	Article
语种	英语
开放获取类型	Green Published, Green Accepted, gold
收录类别	SCI-E
WOS记录号	WOS:000619488300001
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	International Crops Research Institute for the Semi-Arid Tropics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347916
作者单位	[Pujarula, Vijayalakshmi; Pusuluri, Madhu; Bollam, Srikanth; Das, Roma Rani; Ratnala, Rambabu; Adapala, Gopikrishna; Thuraga, Vishnukiran; Rathore, Abhishek; Srivastava, Rakesh K.; Gupta, Rajeev] Int Crops Res Inst Semi Arid Trop, Patancheru, Andhra Pradesh, India
推荐引用方式 GB/T 7714	Pujarula, Vijayalakshmi,Pusuluri, Madhu,Bollam, Srikanth,et al. Genetic Variation for Nitrogen Use Efficiency Traits in Global Diversity Panel and Parents of Mapping Populations in Pearl Millet[J]. International Crops Research Institute for the Semi-Arid Tropics,2021,12.
APA	Pujarula, Vijayalakshmi.,Pusuluri, Madhu.,Bollam, Srikanth.,Das, Roma Rani.,Ratnala, Rambabu.,...&Gupta, Rajeev.(2021).Genetic Variation for Nitrogen Use Efficiency Traits in Global Diversity Panel and Parents of Mapping Populations in Pearl Millet.FRONTIERS IN PLANT SCIENCE,12.
MLA	Pujarula, Vijayalakshmi,et al."Genetic Variation for Nitrogen Use Efficiency Traits in Global Diversity Panel and Parents of Mapping Populations in Pearl Millet".FRONTIERS IN PLANT SCIENCE 12(2021).