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Phenological variations in early planting of wheat breeding lines and identification of markers by GWAS

Creator: Farhad, M.
Creator: Shashi Bhushan Tripathi
Creator: Singh, R.P.
Creator: Joshi, A.K.
Creator: Bhati, P.K.
Creator: Mondal, S.
Creator: Kumar, U.
Year: 2020
Format: PDF
Language: English
Publisher: TERI School of Advanced Studies
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose
Type: Conference Poster
Place of Publication: [Place of publication not identified]
Pages: 1 page
Description: Over the last fifty years, the wheat improvement programs and releasing commercial wheat varieties in south Asia has been successful in developing countries However, a decrease in annual genetic gain for yield has been observed attributed to global warming Being a winter cereal, wheat needs substantial amount of heat tolerance both at early growth stages, immediately after planting and at terminal grain filling stage Significant variation for terminal heat tolerance exists in the native wheat gene pool Likewise, early sowing may allow to select early heat tolerant genotypes along with longer phenology to escape terminal heat stresses A study was conducted to map early heat tolerance at BISA farm, Ludhiana in 2017-8 and 2018-19 seasons A total of six hundred wheat lines were planted seventeen days earlier than timely planting for 2017-18 season and, another set of six hundred lines were planted 24 days earlier than timely planting for 2018-19 season Trial design was alpha lattice with two replications Several agro morphological and physiological traits were evaluated Yield was significantly increased but the TGW was shown to be varied in early planting Most of the early planted genotypes matured one week earlier in 2017-8 season and two weeks earlier in 2018-19 season than normal planting, pertaining that the addition of phenological times is dissecting its effect on other phenological dates Genome Wide Association Studies identified several significant SNP markers associated with early heat tolerance The results open new avenue to further study QTLs association in details with adaptation to early planting through phenological genes like vernalization, photoperiod, reduced height and earliness per se.
Agrovoc: WHEAT

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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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