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Characterising variation in wheat traits under hostile soil conditions in India.

ABSTRACT: Intensive crop breeding has increased wheat yields and production in India. Wheat improvement in India typically involves selecting yield and component traits under non-hostile soil conditions at regional scales. The aim of this study is to quantify G*E interactions on yield and component traits to further explore site-specific trait selection for hostile soils. Field experiments were conducted at six sites (pH range 4.5-9.5) in 2013-14 and 2014-15, in three agro-climatic regions of India. At each site, yield and component traits were measured on 36 genotypes, representing elite varieties from a wide genetic background developed for different regions. Mean grain yields ranged from 1.0 to 5.5 t ha-1 at hostile and non-hostile sites, respectively. Site (E) had the largest effect on yield and component traits, however, interactions between genotype and site (G*E) affected most traits to a greater extent than genotype alone. Within each agro-climatic region, yield and component traits correlated positively between hostile and non-hostile sites. However, some genotypes performed better under hostile soils, with site-specific relationships between yield and component traits, which supports the value of ongoing site-specific selection activities.

SUBMITTER: Khokhar JS

PROVIDER: S-EPMC5467898 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Characterising variation in wheat traits under hostile soil conditions in India.

Khokhar Jaswant S JS Sareen Sindhu S Tyagi Bhudeva S BS Singh Gyanendra G Chowdhury Apurba K AK Dhar Tapamay T Singh Vinod V King Ian P IP Young Scott D SD Broadley Martin R MR

PloS one 20170612 6

Intensive crop breeding has increased wheat yields and production in India. Wheat improvement in India typically involves selecting yield and component traits under non-hostile soil conditions at regional scales. The aim of this study is to quantify G*E interactions on yield and component traits to further explore site-specific trait selection for hostile soils. Field experiments were conducted at six sites (pH range 4.5-9.5) in 2013-14 and 2014-15, in three agro-climatic regions of India. At ea ...[more]

PMID: 28604800

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Characterising variation in wheat traits under hostile soil conditions in India.

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Characterising variation in wheat traits under hostile soil conditions in India.

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