Preliminary Dissection of Grain Yield and Related Traits at Differential Nitrogen Levels in Diverse Pre-Breeding Wheat Germplasm Through Association Mapping

被引：6

作者：

Sharma, Achla ^{[1
]}

Arif, Mian A. R. ^{[2
]}

Shamshad, M. ^{[1
]}

Rawale, Kanwardeep S. ^{[3
]}

Brar, Anureet ^{[1
]}

Burgueno, Juan ^{[4
]}

Shokat, Sajid ^{[2
]}

Kaur, Ravinder ^{[1
]}

Vikram, Parsahnt ^{[5
]}

Srivastava, Puja ^{[1
]}

Sandhu, Nitika ^{[1
]}

Singh, Jayesh ^{[1
]}

Kaur, Satinder ^{[1
]}

Chhuneja, Parveen ^{[1
]}

Singh, Sukhwinder ^{[3
]}

机构：

[1] Punjab Agr Univ, Ludhiana, Punjab, India

[2] Nucl Inst Agr & Biol, Faisalabad 38000, Pakistan

[3] 222 Mary Jena Lane, Pullman, WA 99163 USA

[4] CIMMYT, Carretera Mexico Veracruz Km 45, El Batan 56237, Texcoco, Mexico

[5] Int Ctr Biosaline Agr, Acad City, Dubai, U Arab Emirates

来源：

MOLECULAR BIOTECHNOLOGY | 2023年 / 65卷 / 01期

关键词：

Wheat; pNUE; Pre-breeding lines; Nitrogen; Landraces; GWAS; Marker-trait-association; USE EFFICIENCY; SOFTWARE;

D O I：

10.1007/s12033-022-00535-8

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Development of nutrient efficient cultivars depends on effective identification and utilization of genetic variation. We characterized a set of 276 pre-breeding lines (PBLs) for several traits at different levels of nitrogen application. These PBLs originate from synthetic wheats and landraces. We witnessed significant variation in various traits among PBLs to different nitrogen doses. There was similar to 4-18% variation range in different agronomic traits in response to nitrogen application, with the highest variation for the biological yield (BY) and the harvest index. Among various agronomic traits measured, plant height, tiller number, and BY showed a positive correlation with nitrogen applications. GWAS analysis detected 182 marker-trait associations (MTAs) (at p-value < 0.001), out of which 8 MTAs on chromosomes 5D, 4A, 6A, 1B, and 5B explained more than 10% phenotypic variance. Out of all, 40 MTAs observed for differential nitrogen application response were contributed by the synthetic derivatives. Moreover, 20 PBLs exhibited significantly higher grain yield than checks and can be selected as potential donors for improved plant nitrogen use efficiency (pNUE).

引用

页码：116 / 130

页数：15

共 37 条

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