Title: Effect of Phosphorus Deficiency Stress on Root Morphology and Nutrient Absorption of Rice Cultivars
Abstract: With sandy culture, the difference of the root morphology, assimilation product distribution, mineral nutrient absorption and energy requirement of anion absorption were investigated among the low phosphorus tolerant rice (Oryza sativa L.) cultivars (Dld and Ltz 3) and the low phosphorus sensitive cultivars (Hzq and Xsbl) at 10 mg/L and 0.5 mg/L phosphorus (P). The results showed that under low phosphorus condition, the root number, length, surface, and lateral root length, number and density for the tolerant rice cultivars increased obviously, while those for the sensitive cultivars were on verse except lateral root density; compared with the sensitive cultivars, more assimilation products were distributed to root in the tolerant cultivars; the ratio of root to shoot in all cultivars increased, but the tolerant cultivars increased more significantly; less energy requirement of anion absorption might contribute to the more mineral nutrient in the tolerant cultivars.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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Cited By Count: 14
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