Genetic and Environmental Variation in Yield and Root Development in Winter Wheat Using a Semi-Field Phenotyping System

Xiangyu Guo

Publikation: KonferencebidragKonferenceabstrakt til konferenceForskningpeer review

Abstract

Continuing climate change increases probability of plant crops experiencing drought during growth and deeper roots can help plants to uptake potential resource in deep soil and ensure the plants having better growth.
The objective was to explore the genetic and environmental variation in yield and root traits of winter wheat measured in a semi-field root phenotyping facility.

Both phenotypic and genotypic data were available for 84 winter wheat lines which were planted in two beds with 150 rows located at north and south, respectively. In each row, wet and drought treatments were applied by varying the distance to underground watering system. Root data were collected based on the pictures taken from a minirhizotron below each row. The total length of visible roots in each row was analyzed.

The statistical model used for yield included fixed effects of bed-location-treatment, random effects of additive genomic effects, residual line effects, row error, spatial effects and residual error. For root depth, the fixed effects of camera were also included, while the random effects of row error were excluded since there was only one record for each row.

Results showed that the coefficients of genetic variation were 16 for yield and 13 for root length. For both traits, spatial effects maintained relatively large variation, which were 14 for yield and 27 for root length.

In conclusion, it is possible to obtain accurate records of yield in the semi field facility. More accurate root records will allow breeders to include this trait in their breeding programs.
OriginalsprogDansk
Publikationsdato2019
StatusUdgivet - 2019
BegivenhedPlant and Animal Genome Conference ASIA 2019 - Shenzhen, Kina
Varighed: 6 jun. 20198 jun. 2019
https://intlpagasia.org/2021/archives-home/archives-2019

Konference

KonferencePlant and Animal Genome Conference ASIA 2019
Land/OmrådeKina
ByShenzhen
Periode06/06/201908/06/2019
Internetadresse

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