Root-soil interactions under drought and implications for selection

Leonard Wade

Research output: Book chapter/Published conference paperConference paper


Drought avoidance strategies offer the best prospects for developing plants capable of improvedperformance under water deficit. Previous research established that rice genotypes differed in rootgrowth below a hardpan and in water extraction under water deficit, and these results had implicationsfor patterns of adaptation and crop performance. This work has now expanded via increased attentionto root-soil interactions under water deficit and mechanical impedance, including examining the roleof root osmotic adjustment in maintaining the growth and function of roots under water deficit. Recentresults on root-soil interactions will be presented, including variation among genotypes and theimplications for adaptation and selection. This paper draws from recent analyses of multilocation data,evidence collected in the Generation Challenge Program project on drought avoidance root traits andthe new ACIAR project on improved farming and marketing systems in rainfed southern Lao PDR.While the paper is based in crop physiology research, it is placed in a G x E or G x soil context toensure interest to a wider audience, such as those in the IRRC.
Original languageEnglish
Title of host publicationThird International Rice Congress
Subtitle of host publicationRice for Future Generations
Publication statusPublished - 2010
EventInternational Rice Congress - Hanoi, Vietnam, Viet Nam
Duration: 08 Nov 201012 Nov 2010


ConferenceInternational Rice Congress
CountryViet Nam

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