KARI 5TH Scientific Conference Programme and Abstracts OCT 1996

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Date
1996
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Kenya Agricultural Research Institute
Abstract
Three landraces of rice varieties indigenous to Kenya code named; KR-3S, KR-ios and KR- 13S were compared with drought-susceptible and drought-resistant checks, IR-20 and IR-S2 respectively. Experiments were conducted in controlled conditions under water deficit treatments, in glasshouse. The growth parameters evaluated were: root biomass, shoot biomass, root:shoot biomass ration plant height, leaf water potential, chlorophyl and protein content. When plants were grown in pots and water deficit imposed by restricted watering, growth was reduced at low mean water potentials. Root growth was reduced more than shoot growth and leaf water potential decreased in stressed plants. All varieties however, including the checks, showed a similar pattern of response to water deficit suggesting that varietal differences in the control of water loss could not account , for their differing ' performance under conditions of water deficit in the field.
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