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Genetic gain and G × E interaction in bread wheat cultivars representing 105 years of breeding in Pakistan

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Title Genetic gain and G × E interaction in bread wheat cultivars representing 105 years of breeding in Pakistan
 
Creator Hanif, Uzma
Gul, Alvina
Amir, Rabia
Munir, Faiza
Sorrells, Mark E.
Gauch, Hugh G.
Mahmood, Zahid
Subhani, Abid
Imtiaz, Muhammad
Alipour, Hadi
Rasheed, Awais
He Zhonghu
 
Subject breeding
genetic diversity
height
genetic gain
 
Description It is important to understand the genetic gain achieved through selection of key yield traits for planning future breeding strategies in high yielding wheat cultivars. The aim of the present study was to characterize the genetic changes in morphological, physiological, and yield component traits under five irrigated and rain-fed environments using 24 wheat cultivars released from 1911 to 2016 in Pakistan. We evaluated these cultivars for genotype-by-environment (G×E) interaction by additive main effect and multiplicative interactions (AMMI) in five environments. There was a significant increase in grain yield (9.03 kg ha–1 year–1, 0.37%). Plant height was reduced linearly (-0.26 cm year−1, -0.33%). The traits waxiness, leaf rolling, harvest index, spike length and grains per spike significantly increased but the gain was only 0.16-2% per year. Analysis of variance (ANOVA) revealed that genotype, environment, and G×E interaction were highly significant (P 20% of the G×E interaction, respectively. Gene-specific markers identified the durable resistance gene Lr67/Yr46/Sr55/Pm46 in obsolete cultivars as early as 1910, whereas the photoperiod-insensitive allele Ppd-D1a and reduced height alleles Rht-B1b and Rht-D1b were present only in the post-1965 cultivars. Diversity analysis based on a 50 K SNP genotyping array clearly differentiated temporal patterns in 24 cultivars, which was correlated with the agronomic performance of the cultivars. This dataset provided detailed insight about the performance of historical wheat cultivars and could help in devising future wheat breeding strategies to focus on the traits contributing to grain yield and have slower rate of genetic progress.
 
Date 2022-02-15
2023-02-28T08:48:43Z
2023-02-28T08:48:43Z
 
Type Journal Article
 
Identifier Hanif, U., Gul, A., Amir, R., Munir, F., Sorrells, M.E., Gauch, H.G., Mahmood, Z., Subhani, A., Imtiaz, M., Alipour, H., Rasheed, A. and He, Z. 2022. Genetic gain and G×E interaction in bread wheat cultivars representing 105 years of breeding in Pakistan. Crop Science 62(1):178–191.
1435-0653
https://hdl.handle.net/10568/129084
https://doi.org/10.1002/csc2.20655
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Format p. 178-191
 
Publisher Wiley
 
Source Crop Science