Journal article
Identification of QTLs for relative root traits associated with phosphorus efficiency in two culture systems in Brassica napus
Euphytica, Vol.215(11), pp.1-16
11/2019
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Source: InCites
Abstract
Modifications of root system morphology and architecture are considered important strategies of plant tolerance to phosphorus (P) deficiency. However, the effect of culture system on the responses of root traits to P deficiency is not well documented. In this study, the responses of root traits to P deficiency were recorded in a Brassica napus double haploid (DH) population consisting of 182 lines derived from a cross between cultivar ‘Tapidor’ and ‘Ningyou 7’ using an ‘agar’ system and a ‘pouch and wick’ system. Under P deficient conditions, more DH lines had greater total root length, primary root length, total lateral root length, mean lateral root length and less lateral root density in the ‘pouch and wick’ system than the ‘agar’ system. Ten and two quantitative trait loci (QTLs) were detected for the relative root traits in the ‘agar’ system and the ‘pouch and wick’ system, respectively. The QTL for the same trait in the ‘agar’ system did not overlap with that in the ‘pouch and wick’ system. Two and one QTL clusters identified in the ‘agar’ system were located on chromosome A09 (Cluster1 and Cluster2) and C04 (Cluster3), respectively. RLRN_A04b, RSDW_A09a and Cluster1 were found to affect the seed yield and/or yield-related traits in two field trials. Overall, this study demonstrated a significant impact of different culture systems on the responses of root traits to P deficiency and on the detection of QTLs for the relative root traits, and identified three major QTLs that could be employed for marker assisted selection of P efficient cultivars.
Details
- Title
- Identification of QTLs for relative root traits associated with phosphorus efficiency in two culture systems in Brassica napus
- Creators
- Wei Wang - Huazhong Agricultural UniversityYing Zhang - Huazhong Agricultural UniversityGuangda Ding - Huazhong Agricultural UniversityPhilip J. White - James Hutton InstituteMartin R. Broadley - University of NottinghamJohn P. Hammond - University of ReadingKemo Jin - Huazhong Agricultural UniversityHongmei Cai - Huazhong Agricultural UniversityFangsen Xu - Huazhong Agricultural UniversityLei Shi - Huazhong Agricultural University
- Publication Details
- Euphytica, Vol.215(11), pp.1-16
- Publisher
- Springer Netherlands; Dordrecht
- Grant note
- This research was supported by the National Key R&D Program of China (Grant No. 2017YFD0200200), the Applied Basic Research Fronts Program of Wuhan city (2018020401011302), National Nature Science Foundation of China (31972498), Fundamental Research Funds for the Central Universities of China (Grant No. 2662019PY013) and the Rural and Environment Science and Analytical Services Division (RESAS) of the Scottish Government.
- Identifiers
- 991012927059602368
- Copyright
- © Springer Nature B. V. 2019
- Academic Unit
- Faculty of Science and Engineering; Southern Cross Plant Science; School of Environment, Science and Engineering
- Language
- English
- Resource Type
- Journal article