Dry matter partitioning during the propagation of Hippeastrum hybridum as affected by light

Autor:	Paulo Mazzafera, Antônio Celso Magalhães, Giulio Cesare Stancato
Rok vydání:	1995
Předmět:	Starch fungi food and beverages Sowing Amaryllidaceae Horticulture Biology biology.organism_classification Bulb chemistry.chemical_compound Hippeastrum chemistry Dry weight Shoot Dry matter
Zdroj:	Scientia Horticulturae. 62:81-87
ISSN:	0304-4238
Popis:	Dry matter partitioning was investigated in bulbils propagated from twin-scales and in 1-year-old bulbs of Hippeastrum hybridum (cv. Apple Blossom) under different light regimes. Irrespective of the light regimes imposed there was a steady decrease in the dry weight and starch of the scales used for bulbils propagation. The dry weight and leaf area of bulbils propagated in continuous darkness were lower than of those of continuous light and dark-light treatments. When dark-grown bulbils were transferred to the light (dark-light treatment) their leaves greened rapidly and expanded to the size of those grown in continuous light. In the initial phase of development, bulbs of plants from 1-year-old bulbs functioned as an efficient source of assimilates for shoot and root growth. Starch reserves and sucrose were mobilized for the growth of roots and leaves. This flux was reversed when the plants reached the 50th day after planting in full light, and the 75th day after planting in 50% light, indicating that the bulbs changed from being sources to sinks.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::09e0e31fbb92251ed85870aa3a49406a https://doi.org/10.1016/0304-4238(94)00761-4 Zobrazit plný text záznamu Full Text from ScienceDirect