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Marker-Assisted Breeding of Thermo-Sensitive Genic Male Sterile Line 1892S for Disease Resistance and Submergence Tolerance

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Rice science 2021年第1期28卷 89-98页

作者： Luo Yanchang Ma Tingchen joanne teo Luo Zhixiang Li Zefu Yang Jianbo Yin Zhongchao Temasek Life Sciences Laboratory 1 Research LinkNational University of SingaporeSingapore 117604Republic of Singapore Key Laboratory of Rice Genetics and Breeding Rice Research InstituteAnhui Academy of Agricultural SciencesHefei 230031China Department of Biological Sciences National University of Singapore14 Science Drive 4Singapore 117543Republic of Singapore

Rice line 1892S is an elite thermo-sensitive genic male sterile(TGMS)line for two-line hybrid rice ***,1892S is susceptible to rice blast,bacterial blight and *** we reported the introduction of blast resistance(R)gene Pi9,bacterial blight R gene Xa21 and submergence tolerance gene Sub1A into 1892S genetic background through backcrossing and marker-assisted *** improved TGMS line 31892S and its hybrids conferred disease resistance to rice blast and bacterial blight,and showed submergence tolerance for over 14 d without significant loss of *** sterility-fertility conversion of 31892S was similar to that of 1892S.31892S and its derived hybrid rice had similar agronomic traits and grain quality with 1892S and the control hybrid rice,*** newly developed 31892S provided an improved TGMS line for two-line hybrid rice production with disease resistance to rice blast and bacterial blight,and submergence tolerance with no yield penalty or change in grain quality.

关键词： thermo-sensitive genic male sterility bacterial blight rice blast submergence tolerance disease resistance marker-assisted selection

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Optimization of light and temperature in indoor farming to boost anthocyanin biosynthesis and accumulation in Indigo Rose tomato

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Vegetable Research 2022年第1期2卷 170-180页

作者： joanne teo Raji Mohan Shilu Zhang Yuejing Gui Benny Jian Rong Sng In-Cheol Jang Zhongchao Yin Temasek Life Sciences Laboratory 1 Research LinkNational University of SingaporeSingapore 117604Republic of Singapore Department of Biological Sciences 14 Science DriveNational University of SingaporeSingapore 117543Republic of Singapore

Anthocyanins are a group of flavonoids that are found ubiquitously in fruits and *** act as antioxidants in plants and are considered to have potential benefits to human *** tomato cultivar'Indigo Rose'produces purple-skinned fruits that are rich in anthocyanins in fruit *** current study focussed on the detection of anthocyanins and examined the expression profiling of anthocyanin biosynthetic and regulatory genes in Indigo Rose fruits grown under semi-closed greenhouse and fully controlled growth chamber *** anthocyanin content in Indigo Rose fruits grown under growth chamber conditions with a long-day photoperiod and ambient temperature was higher than those grown in the greenhouse with a short-day photoperiod and high *** indoor growth conditions,moderate to high intensity of artificial light(160−240μmol m^(−2) s^(−1))and relatively low temperature(20−25℃)promoted anthocyanin production and accumulation in Indigo Rose *** comparative studies on gene expression under different growth conditions also demonstrate that the expression levels of the structural and regulatory genes in the anthocyanin biosynthetic pathway have a positive correlation with the anthocyanin content in the fruit *** growth conditions identified in this study could be used to grow Indigo Rose in indoor farming in Singapore,where the tropical climate makes it challenging to set up a tomato plantation in an open field or greenhouse.

关键词： boost light fruits

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