Seed Germination and Seedling Development of Anadenanthera Colubrina in Response to Weight and Temperature Conditions
Journal of Plant Sciences
Volume 2, Issue 1, February 2014, Pages: 37-42
Received: Jan. 28, 2014; Published: Feb. 20, 2014
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Francisco Carlos Barboza Nogueira, Departamento de Fitotecnica, Universidade Federal do Ceará - UFC, Campus do Pici Fortaleza, Ceará, Brazil
Charles Lobo Pinheiro, Departamento de Fitotecnica, Universidade Federal do Ceará - UFC, Campus do Pici Fortaleza, Ceará, Brazil
Sebastião Medeiros Filho, Departamento de Fitotecnica, Universidade Federal do Ceará - UFC, Campus do Pici Fortaleza, Ceará, Brazil
Dalva Maria da Silva Matos, Departamento de Hidrobiologia, Universidade Federal de São Carlos, via Washington Luis, São Carlos, São Paulo, Brazil
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The aim of the study was investigated the effects of seed weight and temperature on the germination behavior, and development of seedlings of Anadenanthera colubrina. Germination was carried out using the five constant temperature regimes (20, 25, 30, 35 and 40ºC) under photoperiod (12h) and two classes of seeds: heavy (≥ 0.095g) and light (<0.095g). The experimental design was totally random, with four replications of 25 seeds. The temperature was significant for germination percentage, germination velocity index and mean germination time. There was no effect of seed weight, and there was no interaction between temperature and seed weight for three response variables. Optimum germination for A. colubrina seeds was recorded in four of the five temperatures studied (20, 25, 30 and 35ºC) for both heavy and light seeds. At each temperature, the average root length was similar and, the seedling dry weight was greater for the heavy seed class. There was no effect of temperature on the seed mass to the production of normal seedlings, except at 40ºC. Variation in seed weight, in A. colubrina, can be a part of their strategy for increasing the probability of success of seed germination and subsequent survival of the species a regeneration niche.
Seed Mass, Semi-Arid, Native Species, Seed Size
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Francisco Carlos Barboza Nogueira, Charles Lobo Pinheiro, Sebastião Medeiros Filho, Dalva Maria da Silva Matos, Seed Germination and Seedling Development of Anadenanthera Colubrina in Response to Weight and Temperature Conditions, Journal of Plant Sciences. Vol. 2, No. 1, 2014, pp. 37-42. doi: 10.11648/j.jps.20140201.17
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