Logo image
Back
Number of tillers in wheat is an easily measurable index of genotype tolerance to saline waterlogged soils: Evidence from 10 large-scale field trials in India
Journal article   Peer reviewed

Number of tillers in wheat is an easily measurable index of genotype tolerance to saline waterlogged soils: Evidence from 10 large-scale field trials in India

G. Singh, T.L. Setter, M.K. Singh, N. Kulshreshtha, B.N. Singh, K. Stefanova, B.S. Tyagi, J.B. Singh, B.S. Kherawat and E.G. Barrett-Lennard
Crop and Pasture Science, Vol.69(6)
2018
DOI: https://doi.org/10.1071/CP18053
url
Link to Published Version *Subscription may be requiredView

Abstract

Over 100 wheat varieties and breeding lines from India and Australia were screened in alkaline and waterlogged soils in 10 environments over two years at one drained location and two naturally waterlogged locations in India. Mean trial grain yield was reduced up to 70% in the environments where genotypes were waterlogged for up to 15 days at the vegetative stage in alkaline soil relative to plants in drained soils. Agronomic traits (plant height, tiller number, 1000-grain weight) of genotypes were also reduced under waterlogging. At one waterlogged site, up to 68% of the genetic diversity for predicted grain yields under waterlogging could be accounted for by number of tillers (r2 = 0.41–0.68 in 2011 and 2010, respectively) and positive correlations also occurred at the second site (r2 = 0.19–0.35). However, there was no correlation between grain yields across varieties under waterlogging in any trials at the two waterlogged locations. This may have occurred because waterlogged sites differed up to 4-fold in soil salinity. When salinity was accounted for, there was a good correlation across all environments (r2 = 0.73). A physiological basis for the relationship between tillering and waterlogging tolerance is proposed, associated with crown root development. Results are compared with findings in Australia in acidic soils, and they highlight major opportunities for wheat improvement by selection for numbers of tillers when crops are waterlogged during vegetative growth.

Details

UN Sustainable Development Goals (SDGs)

This output has contributed to the advancement of the following goals:

#13 Climate Action

Source: InCites

Metrics

79 Record Views
4 Times Cited - Web of Science

InCites Highlights

These are selected metrics from InCites Benchmarking & Analytics tool, related to this output

Collaboration types
Domestic collaboration
International collaboration
Citation topics
3 Agriculture, Environment & Ecology
3.4 Crop Science
3.4.1960 Waterlogging Tolerance
Web Of Science research areas
Agriculture, Multidisciplinary
ESI research areas
Agricultural Sciences
Logo image