<紀要論文>
STUDIES ON DROUGHT SUSCEPTIBILITY OF CORCHORUS OLITORIUS L. : II. EFFECTS OF MOISTURE STRESS AT DIFFERENT PHYSIOLOGICAL STAGES ON VEGETATIVE GROWTH AND SEED YIELD OF C. OLITORIUS CV. 'ONIYAYA'

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概要 Concurrent studies reported earlier described the drought susceptibility of two cultivars of Corchorus olitorius during the vegetative stage. The present greenhouse study was a further investigation c...onducted to evaluate the effects of soil water potential of -6 bar imposed at different physiological stages (the mid-vegetative, flowering, pod formation and pod filling) using the cultivar 'Oniyaya' as the test crop. The objective was to determine the most critical period with regards to susceptibility to water stress in terms of vegetative and reproductive yields and yield components. Leaf area was reduced by moisture stress at all stages of growth. Branch number, stem, lamina, petiole and whole plant fresh and dry weights and seed dry weight were significantly reduced by stress at the three reproductive stages. Pod number was greatly lowered when stress was imposed at flowering and pod formation stages, while pod lengths were significantly reduced by stressing at pod formation stage. The flowering stage appeared to be most critical.続きを見る

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登録日 2009.04.22
更新日 2015.11.06

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