relation: http://oar.icrisat.org/11255/
title: Deciphering the genetic basis of root morphology, nutrient uptake, yield, and yield-related traits in rice under dry direct-seeded cultivation systems
creator: Sandhu, N
creator: Subedi, S R
creator: Singh, V K
creator: Sinha, P
creator: Kumar, S
creator: Singh, S P
creator: Ghimire, S K
creator: Pandey, M
creator: Yadaw, R B
creator: Varshney, R K
creator: Kumar, A
subject: Rice
subject: South Asia
subject: Genetics and Genomics
description: In the face of global water scarcity, a successful transition of rice cultivation from puddled to dry direct-seeded rice (DDSR) is a future need. A genome-wide association study was performed on a complex mapping population for 39 traits: 9 seedling-establishment traits, 14 root and nutrient-uptake traits, 5 plant morphological traits, 4 lodging resistance traits, and 7 yield and yield-contributing traits. A total of 10 significant marker-trait associations (MTAs) were found along with 25 QTLs associated with 25 traits. The percent phenotypic variance explained by SNPs ranged from 8% to 84%. Grain yield was found to be significantly and positively correlated with seedling-establishment traits, root morphological traits, nutrient uptake-related traits, and grain yield-contributing traits. The genomic colocation of different root morphological traits, nutrient uptake-related traits, and grain-yield-contributing traits further supports the role of root morphological traits in improving nutrient uptake and grain yield under DDSR. The QTLs/candidate genes underlying the significant MTAs were identified. The identified promising progenies carrying these QTLs may serve as potential donors to be exploited in genomics-assisted breeding programs for improving grain yield and adaptability under DDSR.
publisher: Springer Nature Publishing
date: 2019-06
type: Article
type: PeerReviewed
format: application/pdf
language: en
identifier: http://oar.icrisat.org/11255/1/s41598-019-45770-3.pdf
identifier:   Sandhu, N and Subedi, S R and Singh, V K and Sinha, P and Kumar, S and Singh, S P and Ghimire, S K and Pandey, M and Yadaw, R B and Varshney, R K and Kumar, A  (2019) Deciphering the genetic basis of root morphology, nutrient uptake, yield, and yield-related traits in rice under dry direct-seeded cultivation systems.  Scientific Reports (TSI), 9 (1) (9334).  pp. 1-16.  ISSN 2045-2322     
relation: https://doi.org/10.1038/s41598-019-45770-3
relation: 10.1038/s41598-019-45770-3