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DISTRIBUTION OF P*SUP 32/, Ca*SUP 45/, AND Zn*SUP 65/ IN THE FRUITING BEAN (PHASEOLUS VULGARIS L.) AFTER ROOT ABSORPTION. REDISTRIBUTION OF THESE ELEMENTS DURING GERMINATION OF THE SEED AND THE DEVELOPMENT OF THE YOUNG PLANT (in French)

Journal Article · · Bull. Inst. Agron. Sta. Rech. Gembloux.
OSTI ID:4748533
;
The distribution of root-absorbed P/sup 32/, Ca/sup 45/ and Zn/sup 65/ in the fruiting bean (Phaseolus vulgaris L.) plant, the mature seed, and the redistribution of the elements during germination and seedling development was followed. The highest concentration of P/sup 32/ and Zn/sup 65/ was recovered in the actively growing plant parts and reprcductive structures, whereas, Ca/sup 46/ was found in higher concentrations in the older tissues. A major percentage of the seed-contained P/sup 32/ and Zn/sup 65/ (97 and 84%, respectively) was found in the cotyledons and 74% of the Ca/sup 45/ was found in the seed coat. On a dry weight basis the greatest concentration of P/sup 32/ and Zn/sup 65/ was recovered in the epicotyl + hypocotyl + radicle. The greatest concentration of Ca/sup 46/ was still found in the seed coat. All three nutrients (P/sup 32/, Ca/sup 46/ and Zn/sup 65/) were translocated out of the cotyledons and into the remaining portions of the embryo at varying rates. After a six-day germination period 29, 14, and 54% of the cotyledon-contained P/sup 32/, Ca/sup 46/, and Zn/sup 65/, respectively, was translocated out of the cotyledons. Of the P/sup 32/, Ca/sup 46/ and Zn/sup 65/ transported out of the cotyledons, greater percentages were recovered in the hypocotyl + radicle (basipetal transport) than in the epicotyl (acropetal transport). The following order of mobility, Zn/sup 65/, P/sup 32/, and Ca/sup 46/, was established using as a criterion the percent of the nutrient present in the cotyledon at beginning of germination transported to other parts of the embryo. (auth)
Research Organization:
Institut Agronomique de l'Etat, Gembloux, Belg.
NSA Number:
NSA-17-015551
OSTI ID:
4748533
Journal Information:
Bull. Inst. Agron. Sta. Rech. Gembloux., Journal Name: Bull. Inst. Agron. Sta. Rech. Gembloux. Vol. Vol: 29
Country of Publication:
Country unknown/Code not available
Language:
French

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Related Subjects

AGE
BIOLOGY AND MEDICINE
CALCIUM 45
DISTRIBUTION
EMBRYOS
METABOLISM
PHASEOLUS
PHOSPHORUS 32
PHYSIOLOGY
PLANTS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
REPRODUCTION
ROOTS
SEEDS
TISSUES
VARIATIONS
VEGETABLES
WEIGHT
ZINC 65