A QTL study on late leaf spot and rust revealed one major QTL for molecular breeding for rust resistance in groundnut (Arachis hypogaea L.)

Late leaf spot (LLS) and rust are two major foliar diseases of groundnut (Arachis hypogaea L.) that often occur together leading to 50–70% yield loss in the crop. A total of 268 recombinant inbred lines of a mapping population TAG 24 × GPBD 4 segregating for LLS and rust were used to undertake quantitative trait locus (QTL) analysis. Phenotyping of the population was carried out under artificial disease epiphytotics. Positive correlations between different stages, high to very high heritability and independent nature of inheritance between both the diseases were observed. Parental genotypes were screened with 1,089 simple sequence repeat (SSR) markers, of which 67 (6.15%) were found polymorphic. Segregation data obtained for these markers facilitated development of partial linkage map (14 linkage groups) with 56 SSR loci. Composite interval mapping (CIM) undertaken on genotyping and phenotyping data yielded 11 QTLs for LLS (explaining 1.70–6.50% phenotypic variation) in three environments and 12 QTLs for rust (explaining 1.70–55.20% phenotypic variation). Interestingly a major QTL associated with rust (QTLrust01), contributing 6.90–55.20% variation, was identified by both CIM and single marker analysis (SMA). A candidate SSR marker (IPAHM 103) linked with this QTL was validated using a wide range of resistant/susceptible breeding lines as well as progeny lines of another mapping population (TG 26 × GPBD 4). Therefore, this marker should be useful for introgressing the major QTL for rust in desired lines/varieties of groundnut through marker-assisted backcrossing

A general definition of formation time for starting jets and forced plumes at low Richardson number

202205 bckwAccepted ManuscriptOthersNational Natural Science Foundation of China; The Hong Kong Polytechnic UniversityPublishe

Flow visualization and heat transfer characteristics of gas–liquid two-phase flow in microtube under constant heat flux at wall

Flow visualization of gas–liquid two-phase flows in circular glass tubes with inner diameter of 500 and 300 μm have been conducted. The 300 μm tube is further utilized for the investigation of the heat transfer characteristics under constant heat flux at wall. The constant heat flux is supplied by joule heating via applied electric current through a thin uniform indium tin oxide coating. To ensure steady flow patterns, the two-phase flow is achieved by injecting nitrogen gas coaxially through a centrally positioned tube to the continuous liquid phase flow. Measurements of wall temperature along the heating zone, various flow patterns and pressure drop are recorded simultaneously. Thermal performance is found to depend on bubble size, void fraction, Reynolds number and flow patterns. The two-phase Nusselt number (NuG,L) for bubbly flow is found to increase by 176% compared to the single phase flow, while the corresponding pressure drop increases by less than 27%.No Full Tex

Vortex formation in starting buoyant jets at moderate Richardson numbers

Author name used in this publication: 郭会芬Author name used in this publication: 高磊Author name used in this publication: 余澄文202502 bcchVersion of RecordOthersHKPolyU; National Natural Science Foundation of ChinaPublishedVoR allowe

Propulsive characteristics of single-pulsed jets with tube and orifice openings

Author name used in this publication: 高磊Author name used in this publication: 王鑫Author name used in this publication: 余澄文202502 bcchVersion of RecordSelf-fundedPublishedVoR allowe

The formation and post-formation processes of vortex rings discharged from laminar starting jets

Author name used in this publication: 郑浩均Author name used in this publication: 高磊Author name used in this publication: 余澄文202502 bcchSelf-fundedPublished12 monthsVoR allowe

Control of wakes and vortex-induced vibrations of a single circular cylinder using synthetic jets

202405 bcchAccepted ManuscriptSelf-fundedPublishedGreen (AAM

Active control of vortex-induced vibrations of a circular cylinder using windward-suction- leeward-blowing actuation

2015-2016 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Control of vortex-induced vibration using a pair of synthetic jets : influence of active lock-on

2017-2018 > Academic research: refereed > Publication in refereed journal201805 bcrcVersion of RecordPublishe