Wheat multiple synthetic derivatives: a new source for heat stress tolerance adaptive traits.

Elbashir, Awad Ahmed Elawad and Gorafi, Yasir Serag Alnor and Tahir, Izzat Sidahmed Ali and Kim, June-Sik and Tsujimoto, Hisashi (2017) Wheat multiple synthetic derivatives: a new source for heat stress tolerance adaptive traits. Breeding science, 67 (3). pp. 248-256. ISSN 1344-7610

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Abstract

Heat stress is detrimental to wheat (Triticum aestivum L.) productivity. In this study, we aimed to select heat-tolerant plants from a multiple synthetic derivatives (MSD) population and evaluate their agronomic and physiological traits. We selected six tolerant plants from the population with the background of the cultivar 'Norin 61' (N61) and established six MNH (MSD population of N61 selected as heat stress-tolerant) lines. We grew these lines with N61 in the field and growth chamber. In the field, we used optimum and late sowings to ensure plant exposure to heat. In the growth chamber, in addition to N61, we used the heat-tolerant cultivars 'Gelenson' and 'Bacanora'. We confirmed that MNH2 and MNH5 lines acquired heat tolerance. These lines had higher photosynthesis and stomata conductance and exhibited no reduction in grain yield and biomass under heat stress compared to N61. We noticed that N61 had relatively good adaptability to heat stress. Our results indicate that the MSD population includes the diversity of Aegilops tauschii and is a promising resource to uncover useful quantitative traits derived from this wild species. Selected lines could be useful for heat stress tolerance breeding.

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Depositing User: Unnamed user with email almegdadsharaf@gmail.com
Date Deposited: 14 Jan 2018 18:59
Last Modified: 14 Jan 2018 18:59
URI: http://search.srh.edu.sd/id/eprint/2161

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